Nu-Lec_MODBUS - Technical Manual
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NU-LEC INDUSTRIES PTY LTD A Schneider Electric Company
Modbus Protocol Technical Manual For Automatic Circuit Reclosers And Load Break Switches With CAPM-4/5 Controllers
Scope This document describes the Modbus Protocol and Database Implementation on Nu-Lec Automatic Circuit Reclosers and Load Break Switches utilising CAPM-4/5 controllers. Document Part No: Document Revision Level:
N00-665 R05
COPYRIGHT NU-LEC INDUSTRIES PTY LTD 2001
Nu-Lec Industries Pty Ltd. ACN 085 972 425 37 South Street, Lytton, QLD 4178, Australia. Tel +61 7 3249 5444 Fax +61 7 3249 5888
LIMITATIONS This document is copyright and is provided solely for the use of the recipient. It is not to be copied in any way, nor its contents divulged to any third party, nor to be used as the basis of a tender or specification without the express written permission of Nu-Lec Industries Pty Ltd. This document discloses confidential intellectual property that belongs to Nu-Lec Industries P/L. This document does not invest any rights to Nu-Lec Industries intellectual property in the recipient. Moreover the recipient is required not to disclose any of the intellectual property contained in this document to any other party unless authorised in writing by Nu-Lec Industries Pty Ltd. Public Access: \stdprod\N00\Current\N00-665Rev5.pdf Source: \R&D\CAPM4\manuals\N00-665.doc
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Revision Control Revision
Author
Date
R00 R01 R02 R03
DPC DPC DPC DPC
24/10/01 12/11/01 10/05/02 18/12/02
R04
PJM
24/10/03
R05
PJM
28/11/03
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Comment Initial revision Alteration from first meeting 8/11/01 Correct Loop Automation ON rejection reasons. Add new points for Version 28. Removed reference to Frame Timeout. Added new appendix for CAPM2 N00-321 & N00-360 emulation. Altered the Mapping selection field Corrected N00-321/N00-360 Digital Status Word 2
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Content 1 2
Introduction..................................................................................................................................4 Overview......................................................................................................................................4 2.1 Data Types .................................................................................................................................4 2.2 Controls......................................................................................................................................4 2.3 Terminology...............................................................................................................................4 2.4 LBS vs ACR Point Mapping. ....................................................................................................5 2.5 Password Protection...................................................................................................................5 3 Applicability ................................................................................................................................5 3.1 Control Cubicle Software ..........................................................................................................5 3.2 Modbus Protocol Definition ......................................................................................................5 3.3 Switchgear Type ........................................................................................................................5 4 Year 2000 Compliance Statement ...............................................................................................5 5 Protocol Configuration.................................................................................................................5 5.1 Protocol Parameter Configuration .............................................................................................6 6 Physical Layer..............................................................................................................................6 6.1 Communications Ports Supported..............................................................................................6 6.2 RS-232 Communication Specifications.....................................................................................6 6.2.1 RS-232 Hardware Signals............................................................................................6 6.2.2 RS-232 Character Definition .......................................................................................7 6.2.3 Communication Configuration Parameters..................................................................7 6.2.4 RS-232 Configuration..................................................................................................7 6.3 V23 FSK Communication Specifications..................................................................................9 6.3.1 V23 Hardware Signals .................................................................................................9 6.3.2 V23 Configuration Parameters ..................................................................................10 6.3.3 V23 Handshaking Signals..........................................................................................12 6.4 Communication Statistics ........................................................................................................12 Appendix A Protocol Timings ...........................................................................................................14 Appendix B Modbus Implementation Table......................................................................................15 Appendix C - ACR Modbus Points ...................................................................................................16 Appendix C.1 ACR Modbus - Digitial Inputs ...................................................................................16 Appendix C.2 ACR Modbus - Analogue Inputs................................................................................34 Appendix C.3 ACR Modbus - Digital Control ..................................................................................42 Appendix C.4 ACR Modbus - Analogue Control..............................................................................47 Appendix D LBS Modbus Points ......................................................................................................48 Appendix D.1 LBS Modbus - Digital Inputs .....................................................................................48 Appendix D.2 LBS Modbus - Analogue Inputs.................................................................................55 Appendix D.3 LBS Modbus - Digital Control...................................................................................61 Appendix D.4 LBS Modbus - Analogue Control ..............................................................................64 Appendix E CAPM2 Modbus Point Map ..........................................................................................65 Appendix E.1 Data Available over Modbus ......................................................................................65 Appendix E.2 Controls Available over Modbus................................................................................68 Appendix F CAPM2 N00-321 and N00-360 Modbus Point Map .....................................................69 Appendix F.1 Data Available over Modbus ......................................................................................69 Appendix F.2 Controls Available over Modbus ................................................................................72
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1 Introduction This document describes the Modbus implementation for Nu-Lec Automatic Circuit Reclosers (ACRs) and Load Break Switches (LBSs) on Control and Protection Module types 4 & 5 (CAPM). For more information about the Automatic Circuit Recloser or Load Break Switch refer to relevant technical manual for your switchgear type.
2 Overview The Nu-Lec CAPM controller combines the functions of protection relay and switchgear controller into a single intelligent electronic device (IED). The controller provides a user friendly operator interface on a four line LCD control panel which allows configuration and control of the switchgear and configuration of the Modbus Protocol, refer section 5.1. Electricity supply utilities frequently link the controller into their SCADA systems as a Remote Terminal Unit (RTU). To make this simple the controller provides…. • Mounting room for a radio or modem in the control cubicle. • Power supply for the radio or modem in the control cubicle. • Embedded protocol handler for the required SCADA protocol in the controller firmware. This document describes the embedded Modbus protocol handler for the CAPM4/5 controller.
2.1 Data Types The Modbus protocol handler supports the following data exchange between the CAPM4/5 and a SCADA system Master Station. • Digital Inputs • Analogue Inputs • Digital Control • Analogue Control More information is given in later sections.
2.2 Controls A list of the controls supported by the protocol handler is detailed in Appendix C.3 and Appendix D.3. All digital controls have a corresponding digital input. The master station must use these input points to verify that the control action has been successful. Sometimes a control will be rejected because of an underlying CAPM condition preventing the action. These conditions are detailed in the table in the appendices. The Modbus protocol handler triggers two events that are recorded in the CAPM event log “Modbus Trip Req” and “Modbus Close Req”. This event log reporting indicates only that the protocol handler has requested a trip or a close from the CAPM. It does not necessarily mean that the action has been taken. The Modbus protocol handler is designated as a remote user. Refer to the equipment manual for more information.
2.3 Terminology The terminology used in this document is that Earth Fault or Ground Fault is described as Earth / Ground Fault and Sensitive Earth Fault (SEF) or Sensitive Ground Fault (SGF) is described as SEF/SGF. Also, bushing terminology used in this document is for U and W series switchgear ie I and X for the switchgear terminals. On N or RL series switchgear the 1 side is described as I and the 2 side is described as X. Also note that the phase terminology is ABC and refers always to the phase set by the Terminal Designation or “Phasing” option, never to the physical bushing or terminal on the switchgear. N00-665 R05
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2.4 LBS vs ACR Point Mapping. The Modbus protocol handler supports independent point maps for the ACR and LBS switchgear types. The mapping for each is listed in the appendices. The type supported by the protocol handler is firmware dependant and determined by the CAPM on power up. If the incorrect configuration is supplied please refer to Nulec Industries or your distributor.
2.5 Password Protection All Modbus panel fields require password entry unless described as ‘Display only’ or otherwise stated. For more information on operator control panel usage refer to the equipment manual.
3 Applicability 3.1 Control Cubicle Software This document applies to Nu-Lec pole top reclosers using a CAPM Controller which displays “Modbus Protocol Manual N00-665 R05+” on the controller capability pages. To find these pages refer to the main equipment manual.
3.2 Modbus Protocol Definition The protocol version implemented by Nu-Lec is Modbus and is described in the following document: • 'Gould Modbus Protocol Reference Guide', PI-MBUS-300 RevB, January 1985 The Modbus protocol handler implements a sub-set of the complete Modbus protocol definition. The subset of Modbus communication function codes that are supported are listed in Appendix B. This sub-set allows a Modbus master station to poll a Nulec recloser and: • scan the current values of inputs, holding registers • force logic coils • preset holding registers
3.3 Switchgear Type Applicable to the following switchgear types: • N-Series ACR, all models with CAPM-4/5 controllers. • U-Series ACR, all models with CAPM-4/5 controllers • W-Series ACR, all models with CAPM-4/5 controllers • RL-Series LBS, all models with CAPM-4/5 controllers
4 Year 2000 Compliance Statement The Modbus protocol software complies with rules 1, 2, 3 and 4 of the British Standards Institute Year 2000 Conformity Requirement (DISC PD2000-1 A Definition of Year 2000 Conformity Requirements). A copy of this statement can be found on the Nu-Lec Industries Pty Ltd web site (http://www.Nu-Lec.com.au/).
5 Protocol Configuration The Modbus protocol handler adds several pages to the “System Status” menus. The additional pages fall into the following groups, • Protocol Parameter Configuration • Communications Parameter Configuration • Communications Statistics All protocol configuration parameters can be viewed, modified and stored on a personal computer with the WSOS utility.
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5.1 Protocol Parameter Configuration These pages allow the SCADA engineer to configure the Modbus protocol parameters.
---- Modbus Protocol Configuration 1 --RTU Address 1 Framing RTU Mapping NORMAL
Parameter RTU Address
Framing Mapping
Description RTU Address The station address of this unit on the communication link. Range 1 to 247 Factory default is 1 Framing Type Display only. Transmission mode used by RTU. Database Point Mapping The point map provided by the CAPM. The range is CAPM4/5 ACR (Refer to Appendix C) CAPM4/5 LBS (Refer to Appendix D) CAPM2 424 (Refer to Appendix E) CAPM2 321 (Refer to Appendix F) CAPM2 360 (Refer to Appendix F) Default: CAPM4/5 ACR
6 Physical Layer 6.1 Communications Ports Supported The CAPM can communicate to the Master station via one of the following ports. • RS-232 Port P8 • V23 FSK Port P10
6.2 RS-232 Communication Specifications 6.2.1 RS-232 Hardware Signals P8 Pin 2 3 4 5 7 8 20
Direction From CAPM To CAPM From CAPM To CAPM To CAPM From CAPM
Description Tx Data (TxD) Rx Data (RxD) Request To Send (RTS) Clear To Send (CTS) Signal Ground Carrier Detect (CD) Data Terminal Ready (DTR)
Note: The CAPM uses RTS/CTS hardware handshaking. If not supported by the master then a loop back is required at the CAPM end of the communication cable.
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6.2.2 RS-232 Character Definition RS-232 characters are 8 bit, with 1 stop bit. Parity is optional, and can be configured to either none, odd or even.
6.2.3 Communication Configuration Parameters The following communications configuration pages allow the user to specify parameters required for operation of the physical link between the recloser and the master station.
-------- Modbus Communications 1 -----P8 RS-232 RUNNING Pre-Tx 250ms Post-Tx 35ms
Parameter
OFF P8 RS-232 P10 V23
RUNNING INACTIVE
Pre-Tx
Post-Tx
Description Port Selection This field selects the communications medium the Modbus protocol uses for transmission. When OFF is selected, the protocol handler is disabled. When P8 RS–232 is selected, the protocol handler uses the P8 serial port for all data. Also, the Modbus Communications 1 and 2 pages are automatically updated to reflect relevant RS-232 data as detailed below. When P10 V23 FSK is selected, the protocol uses the built in V23 modem on P10. Also, the Modbus Communications 1 and 2 pages are automatically updated to reflect relevant FSK data. Refer to section 6.3 for the P10 configuration details. Range: OFF, P8 RS-232, P10 V23 Factory default is P8 RS–232 Protocol Status Indication of the current status of the communications. (Display only) RUNNING means that the protocol handler has connected to the communication port (P8 or P10) and is running. INACTIVE means that the protocol handler has been disabled via the OFF state above or has been unable to connect to a communication port. This is usually caused by another application already having exclusive access to the port. Range: INACTIVE, RUNNING Pre-Transmission Period The time delay between keying RTS to when the message starts. Range: 50 to 1000 ms. Factory default is 250 ms Post-Transmission Period The time after the last character is sent before RTS is negated. Range: 0 to 1000 ms. Factory default is 35 ms
6.2.4 RS-232 Configuration The following communications configuration pages allow the user to specify parameters required for operation of a RS-232 / Modem physical link between the recloser and the master station. N00-665 R05
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-------- Modbus Communications 2 -----Parity EVEN DCD Ignore Baud 9600
Parameter Parity
DCD Ignore
DCD Don’t Ignore
Baud
Description Communication Parity Determines the parity of the communication port. Range: NONE, ODD, EVEN Factory default is EVEN DCD Usage If the modem does not support a Data Carrier Detect (DCD) signal this parameter should be set to DCD Ignore. Even if the modem does support a DCD signal this parameter is usually set to DCD Ignore. This is because most point-point systems using conventional modems run as full duplex so that the DCD is always asserted during normal operation. When set to the ‘Ignore’ mode, the protocol uses any received data to build an incoming packet irrespective of DCD input signal. Also the protocol will transmit irrespective of the DCD input signal. If the modem supports a Data Carrier Detect (DCD) signal this parameter can be set to DCD Don’t Ignore. When set to this mode, the protocol will only read data and build an incoming protocol packet when DCD is asserted. In addition, the protocol will not transmit when DCD is asserted. This is necessary for multi-dropped systems or ones shared with voice users or some radio-modems. Range: DCD Ignore, DCD Don’t Ignore Factory default is DCD Ignore Communications Baud Rate Range: 300, 1200, 2400, 4800, 9600 or 192001 baud. Factory default is 9600 Baud
-------- Modbus Communications 3 -----Pre-amble DISABLED First Char 0x55 Repeat First 3 Last Char 0xFF
Parameter Pre-amble
1
Description Preamble Usage Determines whether the protocol transmits some preamble characters prior to the start of a protocol message. The message itself is not otherwise modified. Some modems require these characters to assist with message reception and synchronisation at the master station. Start of frame filtering at the master station ensures identification of the protocol
19200 baud is not available on CAPM4 controllers
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ENABLED DISABLED
First Char
Repeat First
Last Char
message. ENABLED means that the preamble characters are transmitted prior to a protocol message. DISABLED means that protocol message are transmitted without any preamble characters. Range: ENABLED, DISABLED Factory default is DISABLED Preamble First Character This is the first character to be transmitted as a preamble. The character is specified by entering its ASCII code in hexadecimal format. Range: is 0 to FF hexadecimal. Factory default is 0x55 Number of Preamble First Characters This is the number of times the first character will be repeated as part of the preamble. Eg if all preamble settings are at default values then the preamble sent is 0x55, 0x55, 0x55, 0xFF Range: 0 to 20. Factory default is 3 Last Preamble Character This is the last char that will be sent as part of the preamble. The character is specified by entering its ASCII code in hexadecimal format. Range: is 0 to FF hexadecimal. Factory default is 0xFF
6.2.4.1 Carrier Detect When “DCD Ignore” is configured, the Data Carrier Detect (DCD) input is not used. All data is received and transmitted irrespective of the state of the DCD signal. When “DCD Don’t Ignore” is configured, the CAPM will not begin to transmit a packet until DCD is negated, and will only receive data when DCD is asserted. Refer to the DCD Usage parameter description for more information. 6.2.4.2 Transmitting a Modbus Message Transmission of a Modbus packet follows the steps below 1. RTS line is asserted 2. CAPM waits until the pre-transmission delay expires (Delay set from the panel) 3. Checks CTS is asserted. 4. The pre-amble is transmitted (Optional. Set from the panel). 5. Checks CTS is asserted. 6. The Modbus packet is transmitted 7. Waits until the post-transmission delay expires (Delay set from the panel) 8. RTS is negated 6.2.4.3 DTR DTR is asserted by the Modbus protocol handler at power-up and remains asserted.
6.3 V23 FSK Communication Specifications 6.3.1 V23 Hardware Signals Standard Cable Type N03-530 N00-665 R05
P10 Pin
Direction
Use
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15 Way D Female 5 4
5 4
To CAPM
15 11
15 11
From CAPM From CAPM
6
6
To CAPM
Signal Ground Receive, 10kOhm impedance Sensitivity 0.1V to 2V pk-pk Press To Talk (PTT) Transmit, 600 Ohm impedance Level 2.5V pk-pk Busy, 10kOhm impedance
Signal frequencies conform to V23 standard. The protocol only supports half duplex (ie receive and transmit can not occur at the same time) when using the V23 port. All transmissions are 1200 baud, 8 bit, and one stop bit. Parity is configurable.
6.3.2 V23 Configuration Parameters The Modbus communications configuration page allows the user to specify parameters required for operation of the physical link between the recloser and the master station.
------- Modbus Communications 1 ------S P10 FSK V23 RUNNING Pre-Tx 250ms Post-Tx 35ms Tx NORMAL Parity EVEN
------- Modbus Communications 2 ------S Busy Disabled Busy when input low Busy Idle
------- Modbus Communications 3 ------S Pre-amble DISABLED First Char 0x55 Repeat First 3 Last Char 0xFF
Parameter
OFF P8 RS-232 P10 V23 FSK
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Description Port Selection This field selects the communications medium the Modbus protocol handler uses for transmission. When OFF is selected, the protocol handler is disabled. When P8 RS –232 is selected, the protocol uses the P8 serial port for all data. Also, the Modbus Communications 1 and 2 pages are automatically updated to reflect relevant RS-232 data. Refer to section 6.2 for the P8 configuration details. When P10 V23 FSK is selected, the protocol uses the built in V23 modem on P10. Also, the Modbus Communications 1 and 2 pages are automatically updated to reflect relevant FSK data as detailed below. Page 10
RUNNING INACTIVE
Pre-Tx
Post-Tx
Tx NORMAL Tx TEST
Busy Idle Busy Asserted Busy Disabled
Busy Enabled
Busy when input low Busy when input N00-665 R05
Range: OFF, P8 RS-232, P10 V23 FSK Factory default is P8 RS-232 Protocol Status Indication of the current status of the communications. (Display only) RUNNING means that the protocol handler has connected to the communication port (P8 or P10) and is running. INACTIVE means that the protocol handler has been disabled via the OFF state above or has been unable to connect to a communication port. This is usually caused by another application already having exclusive access to the port. Range: INACTIVE, RUNNING Pre-Transmission Period The time delay between keying PTT to when the message starts. During this time a logic 1 is sent. Range: 50 to 1000 ms. Factory default is 250 ms Post-Transmission Period The time after the last character is sent before PTT is negated. During this time a logic 1 is sent. Range: 0 to 1000 ms. Factory default is 35 ms Transmission Mode This field can be used to test the radio transmitter. Tx NORMAL means that the protocol handler controls the radio for normal Modbustransmissions. Tx TEST means that the protocol handler will send continuous text strings of “TX TEST”. This string is transmitted as an asynchronous message with 8 bit, no parity, 1 stop bit, 1 start bit format. Range: Tx NORMAL, Tx TEST Factory default is Tx NORMAL. BUSY Signal Status The status of the BUSY signal into the CAPM (Display only) “BUSY Idle” indicates that the signal is in the ‘not BUSY’ state. “BUSY Asserted” indicates that the signal is in the ‘BUSY’ state. This usually means that the radio squelch has opened. Range: Busy Idle, Busy Asserted Busy Signal Usage The “Busy Disabled” mode is used when there is no busy signal available. Eg A twisted pair link. When set to this mode, the protocol uses any received data to build a Modbus frame. The protocol is able to transmit at any time. The “Busy Enabled” mode is the normal operating mode for radio systems that have a busy signal available. When set to this mode, the protocol will only read data and build Modbus frames when busy is asserted. In addition, the protocol will not transmit when busy is asserted. This reduces clashes with voice users. Range: Busy Disabled, Busy Enabled Factory default is Busy Disabled Polarity of Busy Signal This field determines the polarity of the input signal from the radio (P10 pin 6) that the CAPM uses as BUSY. “Busy when input low” means that a low input signal will assert BUSY. “Busy when input high” means that a high input signal will assert Page 11
high Pre-amble ENABLED
DISABLED
First Char
Repeat First
Last Char
BUSY. Range: Busy when input low, Busy when input high. Factory default is Busy when input low Preamble Usage When ENABLED the protocol handler inserts a string of characters in front of a message packet. The message frame is otherwise not affected. Start of frame filtering at the master station will ensure identification of the message. This parameter is sometimes required for modems to aid with their keying. When DISABLED the protocol handler does not insert any preamble characters. Range: ENABLED, DISABLED Factory default is DISABLED Preamble First Character This is the first character to be transmitted as a preamble. The character is specified by entering its ASCII code in hexadecimal format. Range: is 0 to FF hexadecimal. Factory default is 0x55 Number of Preamble First Characters This is the number of times the first character will be repeated as part of the preamble. Eg if all preamble settings are at default values then the preamble sent is 0x55, 0x55, 0x55, 0xFF Range: 0 to 20. Factory default is 3 Last Character of Preamble This is the last char that will be sent as part of the preamble. The character is specified by entering its ASCII code in hexadecimal format. Range: is 0 to FF hexadecimal. Factory default is 0xFF
6.3.3 V23 Handshaking Signals The V23 interface uses two signals, PTT from the CAPM, and Busy to the CAPM. The PTT signal is used to key up a half-duplex radio transmitter. At the start of transmission the CAPM asserts the PTT line and signals logic 1 for the pre-transmission time. It then transmits the data blocks. Once the data has been sent it asserts logic 1 for the post-transmission time and then negates PTT. Some radio systemsdo not require a PTT signal. The Busy signal can utilise the squelch signal from a radio that indicates that the channel is busy. If the communications equipment does not have such a signal then “Busy Disabled” should be selected. If a busy signal is available then the “Busy Enabled” should be set. In this mode the polarity of the busy signal must be correctly set to match the operation of the radio. This is done with the “Busy when input high/low” parameter. When “Busy Enabled” is selected and Busy is asserted the protocol handler will… • Process all characters coming in on the receive line and attempt to decode these as Modus frames. This prevents attempting to process channel noise in the absence of radio carrier. • Delay all transmissions until Busy is negated. This avoids clashes with other channel users.
6.4 Communication Statistics The communication statistics give communication information, such as CRC errors, bytes not being sent, received or processed or frames being incorrectly addressed. The communication statistics page appears as below: N00-665 R05
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--- Modbus Communication Statistics --Tx Count OK 582 Rx Count OK 582 Rx Protocol Error 0
Statistic Tx Count OK
Rx Count OK
Rx Protocol Error
Description Transmission Message Count The number of messages transmitted from this recloser into the communication link. Range: 0 to 99999 Receive Message Count The number of messages received by this recloser from the communication link. Range: 0 to 99999 Receive Message Protocol Error Count The number of messages received with protocol related errors such as CRC or parity. Range: 0 to 9999
All of the above counters are zeroed when the CAPM is reset or the reset all button is selected in Windows SOS. Any field can be cleared individually via the control operator panel by selecting it and pressing either the left or right keys. All communication statistic parameters are not password protected.
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Appendix A Protocol Timings Initialisation Time The protocol handler will not respond to master station requests for several seconds after power up whilst it waits for the CAPM database to be initialised and for high priority boot up tasks to be completed.
Turnaround Time The turnaround time for the protocol, from the end of receiving a message until the start of the pretransmission time, is typically < 30 milliseconds with a range of 5 to 100 milliseconds.
Latency of Data The protocol task examines the real-time database every 500 milliseconds to see if anything has changed and to construct the underlying protocol database that is sent to the master station. This introduces a delay between the actual event and updating the protocol database of up to 500 milliseconds. This is the data latency.
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Modbus Protocol Technical Manual
Appendix B Modbus Implementation Table This version of the Modbus protocol handler implements the following sub-set of the Modbus function codes: Supported Function Codes Function Code Dec Hex 01 01 02 02 03 03 04 04 05 05 06 06 07 07 08 08 09 09 10 0A 11 0B 12 0C 13 0D 14 0E 15 0F 16 10 17 11 18 12 19 13 20 14 21 15
Meaning Read Coil Status ( Read Discrete Output ) Read Input Status ( Read Discrete Inputs ) Read Holding Registers ( Read Multiple Registers ) Read Input Registers Force Single Coil ( Write Single Output ) Preset Single Register ( Write Single Register ) Read Exception Status Loopback Diagnostic Test Program Poll Program Complete Get Communications Event Counter Get Communications Event Log Program Poll Program Complete Write Multiple Outputs Write Multiple Registers Report Slave ID Program Reset Communications Link Read General Reference Write General Reference
Support No Yes Yes No Yes Yes No No No No No No No No No No No No No No No
Mode of Transmission This implementation of the Modbus protocol uses the Remote Terminal Unit (RTU) Framing. Exceptions A read of a non-existent coil or register will return an exception. Broadcast Messages Broadcast messages are not supported. A slave address of zero is invalid.
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Modbus Protocol Technical Manual
Appendix C - ACR Modbus Points Appendix C.1 ACR Modbus - Digitial Inputs These points show the state of the switchgear and/or the controller. The phase designation A, B, C is determined by the user, refer to the equipment manual for more information. Phase terminology is explained in section 2.3. W series support is indicated below by a ‘Y’. If indicated as ‘N’ then value is always OFF.
Modbus Implementation Request Code(s): 02 (Read Input Status) Reply Codes(s): 02 (Read Input Status) Error Code: 0x82 Exception Code: 01 (Illegal Function), 02 (Illegal Data Address), 03 (Illegal Data Value), 04 (Slave Device Failure)
Name
Bit
0
W Series
ACR Recloser and Controller State Flags
Abnormal Operator conditions
Y
1
Maintenance Required
Y
2
Auxiliary Supply Fail
Y
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Set = ‘1’
Cleared = ‘0’
For any of the following conditions:• Trip or Close Isolated, • ACR Mechanically locked open (if applicable) • Work Tag Applied For any of the following conditions:• Battery not normal • Capacitor charge failure • Low power mode • Low SF6 gas pressure (if applicable) • ACR data not valid (includes connection to an invalid switch type) • Any vacuum interrupter contact life is less than 20% • Mechanical failure Auxiliary supply has failed
None of the specified conditions are true
This flag shows that the operator has the ACR in an abnormal state such as “work tag applied”. This means that it will operate differently to its normal mode of operation.
No maintenance required
The controller has detected one or more conditions which require maintenance. This point cannot become Set until at least five minutes after controller start.
Comment
Auxiliary supply is normal
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Name
Bit
W Series
Modbus Protocol Technical Manual
Set = ‘1’
Cleared = ‘0’
Comment
3
Control Mode
Y
Local Control Enabled Remote Control Disabled
Local control Disabled Remote control Enabled
The controller is either in Local or Remote control mode. This affects the closing command the permission to set/remove work tag.
4 5
ACR Tripped (open) ACR Closed
Y Y
ACR Tripped ACR Closed
ACR not Tripped ACR not Closed
These are repeats of the mechanism travel switches. When the ACR is disconnected from the control cubicle they are both cleared.
6 7 8 9
Phase Ai Live Phase Bi Live Phase Ci Live Phase Ax Live
Y N N Y
Phase is live
Phase is dead
Shows if the phase bushings are above or below the live line threshold. Phase designation is determined by user.
10
Phase Bx Live
Shows that any of the three phases of the designated Source side or Load side are live.
All of the source side Terminals dead All of the load side Terminal dead
Note that these points are different to the Load/Source Live/Dead events in the controller event record
Note 1
N
Note 1
11
Phase Cx Live
N
Note 1
12
Source Voltage Status
Y
13
Load Voltage Status
Y
14
Load Current On
Y
Current of 2.5A or more is flowing in at least one phase
Current of less than 2.5A is flowing in all three phases
Y
Source X, Load I
Source I, Load X
Y
ACR Locked.
ACR not locked.
Shows that the ACR is mechanically locked in position. Not supported on the N-Series where it will always be zero.
Y
ACR Memory Data not valid
ACR Memory Data Valid
Shows that the controller has retrieved the data from the ACR memory. When invalid the switchgear attributes and the gas pressure are zeroed,
Note 1
15 16 17 18 19 20
Reserved Power Flow Direction Reserved Reserved Reserved Locked
21
ACR Memory Data Invalid
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Name
Bit
W Series
Modbus Protocol Technical Manual
Set = ‘1’
Cleared = ‘0’
Comment
Shows the connection state of the cable between the switchgear and the controller. When connected to the ACR Trip, Close and Locked indications are valid. When disconnected from the ACR data will be forced invalid
22
Switchgear Connection
Y
Switch disconnected from control cubicle.
Switch connected from control cubicle.
23
Contacts Life Low
Y
24
SF6 Gas Pressure Low or Invalid
N
When any vacuum interrupter contact life is less than 20%. Gas pressure Low or Invalid
When all vacuum interrupters have contact life >= 20% Gas Pressure Normal, or Not Known, or Not a switchgear which has SF6.
25
Close Isolate
Y
26
Trip Isolate
Y
27
Work Tag
Y
Close Isolate Switch OFF/ISOLATE(i.e. Close is disabled) Trip Isolate Switch OFF (i.e. Trip is disabled) Work Tag Applied
Close Isolate Switch ON/ENABLE (i.e. Close is enabled) Trip Isolate Switch ON(i.e. Trip is enabled) Work Tag Removed
28
Battery Supply
Y
Battery supply normal
29
Capacitor Charge Failure Y
Battery supply not normal. This includes :Battery Off Battery Overvolt Battery Low Volts Capacitor Charge Failed
Capacitor Charge OK
The Trip/Close Capacitors have failed to charge
30
Mechanism Failure
Y
Mechanism Failure
Mechanism OK
The switchgear has failed to Trip or Close electrically
31
Dummy Circuit Breaker Closed
Y
DCB Closed
DCB Not Closed
The dummy circuit breaker is an internal point useful for SCADA system testing. The value of the DCB is nonvolatile.
32 33
Y
34
Reserved Supply Outage Measurement Door Open
Y
Supply Outage Measurement is ON. Door Open.
Supply Outage Measurement is OFF. Door Closed.
35
Switch Function
Y
Function is ACR
Function is LBS
N00-665 R05
Only set when switchgear is connected and ACR memory data is valid and switchgear type has SF6. Shows the state of the Trip and Close isolate switches on the control panel
The controller can have a work tag. This affects the closing command
Status of cubicle door. Only valid if hardware option installed.
Page 18
W Series
Modbus Protocol Technical Manual
Name
Bit
36
Auxiliary Supply Fail Delayed
37 38 39
Reserved Reserved Reserved
Y
Set = ‘1’
Auxiliary supply has failed for more than 120sec.
Cleared = ‘0’
Comment
Auxiliary supply restored for more than 20sec.
Status of controller auxiliary supply (delayed).
Note 1.
Not available with standard U series ACR without external CVTs, always 0
Bit
Name
W Series
ACR Protection Group Flags
Set = ‘1’
Cleared = ‘0’
40
Prot A Active
Y
Protection Group A is active
Protection Group A is not active
41
Prot B Active
Y
42
Prot C Active
Y
43
Prot D Active
Y
44
Prot E Active
Y
45
Prot F Active
Y
46
Prot G Active
Y
47
Prot H Active
Y
48
Prot I Active
Y
49
Prot J Active
Y
Protection Group B is active Protection Group C is active Protection Group D is active Protection Group E is active Protection Group F is active Protection Group G is active Protection Group H is active Protection Group I is active Protection Group J is active
Protection Group B is not active Protection Group C is not active Protection Group D is not active Protection Group E is not active Protection Group F is not active Protection Group G is not active Protection Group H is not active Protection Group I is not active Protection Group J is not active
Comment
Only one protection group is active at any one time.
Bit
Name
W Series
ACR Automation Flags
Set = ‘1’
Cleared = ‘0’
50
ACO Auto Restore
Y
ACO Auto Restore is ON.
ACO Auto Restore is OFF.
51
ACO Enable
Y
Auto-Changeover is ON.
Auto-Changeover is OFF.
N00-665 R05
Comment
Page 19
Name
W Series
Modbus Protocol Technical Manual
52
ACO Mode
Y
Auto-Changeover is set to Break before Make.
Auto-Changeover is set to Make before Break.
The logic required for an ACO operation.
53
ACO Rank
Y
Auto-Changeover is set to Master.
Auto-Changeover is set to Slave operation.
The ACO hierachy setting for the Controller.
54
Generator Control
Y
Generator Control is ON.
Generator Control is OFF.
Generator Control Enable.
55
Reserved
Bit
Set = ‘1’
Cleared = ‘0’
Comment
ACR Protection Operation Flags This group of points indicates what happened in the last protection sequence. For example the recloser may have tripped, closed, tripped again and locked out. Or it may have tripped, closed and stayed closed because the fault was cleared. In both cases the flags below are set to show the causes of the trips and whether the lockout state has been reached or not. A set of flags is available for each trip in a protection sequence.
Name
Bit
W Series
In addition analogue data is available which shows the fault currents which occurred during the sequence and the number of trips which took place (refer Appendix C.2) Note that a sequence starts when there is a protection trip or a sequence advance. Most of these flags are cleared either by protocol command or when the switchgear is tripped/closed by the operator or when a new protection sequence starts. This data is volatile i.e. it is zeroed on controller software reset.
Set = ‘1’
Cleared = ‘0’
Comment
56
Sequence in Progress
Y
Start of sequence ie a protection trip of a sequence advance has occurred
End of sequence. Either lockout or reclaim.
This shows that a protection sequence has started and not yet completed. Note that operator trip does not cause a “sequence in progress. Event time is the time of the trip or sequence advance.
57
Protection Data Valid
Y
End of sequence either lockout or reclaim
All fault flags are cleared by one of the following actions :• “Reset Fault Flags and Currents” protocol control command • Any Operator Close action • Controller software reset • Start of a new sequence
This shows that the protection sequence is over and the other flags are set. This could be used to drive an operator alarm at the SCADA system to alert him to the fact that a protection sequence has occurred. Note that operator trip alone does not cause a “protection data valid” Event time is the time of lockout or reclaim.
N00-665 R05
Page 20
Name
Bit
W Series
Modbus Protocol Technical Manual
Set = ‘1’
Cleared = ‘0’
sequence
Comment
58
Single Shot Protection
Y
Single Shot Protection was active at the time of the trip.
59
Loss Of Phase Trip
Y
Trip was caused by Loss of Phase Protection
One flag only provided because LOP protection forces lockout. Event time is the time of the trip.
60
Loss Of Phase Phase A Lost
Y
Phase A was lost at time of Loss of Phase Trip
Set if A Phase is lost at time of Loss of Phase trip
61
Loss Of Phase Phase B Lost
N
Phase B was lost at time of Loss of Phase Trip
Set if B Phase is lost at time of Loss of Phase trip
62
Loss Of Phase Phase C Lost
N
Phase C was lost at time of Loss of Phase Trip
Set if C Phase is lost at time of Loss of Phase trip
63
High Current Lockout
Y
The high current lockout function forced the controller to lockout during the last protection sequence
One flag only because High Current Lockout forces lockout Time stamp as for flags above. Event time is the time of the lockout event.
64
Lockout
Y
The controller is in lockout
65
Operator Trip
Y
The last trip was caused Cleared by any close by a local or remote action operator
66
Last Trip Phase Overcurrent
Y
67
Last Trip Earth/Ground Overcurrent
Y
The most recent protection operation was caused by a Phase Overcurrent Protection Trip The most recent protection operation was caused by an Earth/Ground Overcurrent Protection Trip
N00-665 R05
Cleared by any close action
One flag only provided because a single shot trip forces lockout. Event time is the time of the pickup.
This flag shows that the controller is in lockout. Therefore no auto-reclosing will take place. If the ACR is closed this flag will clear. Therefore when this flag is clear and the ACR is closed it indicates that the protection sequence cleared the fault. One flag only because operator trip forces lockout.
Protection Flags are cleared by one of the following actions:• “Reset Fault Flags and Currents” protocol command • Operator Close • At the time of the next trip – the flags are ‘refreshed’ at this time old flags
Page 21
Name
Bit
68
Last Trip SEF/SGF Overcurrent
W Series
Modbus Protocol Technical Manual
Y
Set = ‘1’
Cleared = ‘0’
The most recent protection operation was caused by an SEF/SGF Overcurrent Protection Trip •
69
70
71
72
Operator Close
IOEX Close
Protocol Close
Automation Close
Y
Y
Y
Y
Most recent close caused by local or remote panel close request. Most recent close caused by an IOEX close input.
• •
Most recent close caused by a Distributed Automation Close request.
Cleared by one of the following actions
•
•
• Normal Frequency Close
Y
Most recent close caused by Normal Frequency Close request.
'Reset Flags and Currents' protocol command. Controller Software Reset (data is volatile). At the time of the next Close.
Indicates the most recent close was caused by a local or remote panel close request. Indicates the most recent close was caused by an IOEX close input. Indicates the most recent close was caused by a protocol close request.
Indicates the most recent close was caused by a Distributed Automation Close request (ie Loop Automation, Auto Changeover, or Generator Control).
Cleared by one of the following actions: • • •
N00-665 R05
'Reset Flags and Currents' protocol command. Controller Software Reset (data is volatile). At the time of the next Close. Start of a new sequence.
Most recent close caused by a protocol close request.
•
73
this time – old flags are cleared and the cause of the ‘most recent’ protection operation set. Protection turned OFF
Cleared by one of the following actions: •
Comment
'Reset Flags and Currents' protocol command. Controller Software Reset (data is volatile). At the time of the next Close.
Indiciates the most recent close was caused by a Normal Frequency Close request
Page 22
Name
Bit
74
External Close
W Series
Modbus Protocol Technical Manual
Y
Set = ‘1’
Set if any of the following caused the most recent close: •
75
Under Frequency Protection Flag
76
Over Frequency Protection Flag
77
Last Trip External
CCEM external button on NSeries. • Mechanical action. The switchgear detected as closed without a close reques. • Electrical action (only available on the Advanced controller). Protection operation was caused by Under Frequency Protection operation was caused by Over Frequency
Y
Last Trip caused by either a FTI or an IOEX Protection Input.
Cleared = ‘0’
Cleared by one of the following actions: • • •
'Reset Flags and Currents' protocol command. Controller Software Reset (data is volatile). At the time of the next Close.
The most recent close caused by an action external to the Controller.
Protection Flags are cleared by one of the following actions:• “Reset Fault Flags and Currents” protocol command • Operator Close • At the time of the next trip – the flags are ‘refreshed’ at this time – old flags are cleared and the cause of the ‘most recent’ protection operation set. • Protection turned OFF Protection Flags are cleared by one of the following actions:• • •
• •
N00-665 R05
Comment
"Reset Fault Flags and Currents" protocol command. Operator Close. At the time of the next trip the flags are 'refreshed' at this time old flags are cleared and the cause of the 'most recent' protection operation set. Protection turned OFF. Start of a new sequence.
Page 23
Name
Bit
W Series
Modbus Protocol Technical Manual
Set = ‘1’
78
Last Trip Phase Overcurrent (Close Reset)
Y
The last trip was caused by a Phase Overcurrent Fault.
79
Last Trip Earth/Ground Overcurrent (Close Reset)
N
The last trip was caused by an Earth/Ground Overcurrent Fault.
80
Last Trip SEF/SGF Overcurrent (Close Reset)
N
81
Most Recent Trip Phase A Overcurrent
Y
82
Most Recent Trip Phase B Overcurrent
N
83
Most Recent Trip Phase C Overcurrent
N
84
Instantaneous Most Recent Trip
Y
85
Source Dead
Y
86
Work Tag Trip
Y
N00-665 R05
Cleared = ‘0’
Comment
These flags are cleared This flags whether the last by one of the following trip was caused by a Phase actions: Overcurrent Fault. •
• The last trip was • caused by an SEF/SGF Overcurrent Fault.
"Reset Fault Flags and Currents" protocol control command. Any Close action. Controller software reset (data is volatile).
This flags whether the last trip was caused by an Earth/Ground Overcurrent Fault. This flags whether the last trip was caused by an SEF/SGF Overcurrent Fault.
Protection Flags are cleared by one of the following actions:• “Reset Fault Flags and Currents” protocol command • Operator Close • At the time of the next trip – the flags are ‘refreshed’ at this time – old flags are cleared and the cause of the ‘most recent’ protection operation set. • Protection turned OFF Cleared by: Set if a lockout caused by the ‘Dead Lockout’ • protocol command Feature occurred. • any operator close or operator trip. This includes remote control commands. • start of a new sequence. The time stamp reflects this. Trip while Work Tag or Cleared by: Hot Line Tag applied. • Operator Close • At the time of the next trip the flags are ‘refreshed’, at this time old flags are cleared and the cause of the ‘most recent’ protection operation set. • Protection turned OFF.
The most recent trip was caused by a A Phase Overcurrent Protection Trip The most recent trip was caused by a B Phase Overcurrent Protection Trip The most recent trip was caused by a C Phase Overcurrent Protection Trip The peak current for the most recent trip was greater than the instantaneous setting.
Page 24
Name
Bit
87
W Series
Modbus Protocol Technical Manual
Y
Live Load Block Occurred
Set = ‘1’
Cleared = ‘0’
Set if the most recent close request was blocked due to a Live Load condition.
Comment
Cleared by one of the following actions: • • • •
'Reset Flags and Currents' protocol command. Controller Software Reset (data is volatile). Protection OFF. At the time of the next Close.
Bit
88
89
90 91
Name
Earth / Ground Protection Enabled SEF/SGF Protection Enabled Auto Reclose Loss of Phase Alarm Setting
W Series
ACR Operator/Protection Flags
Earth / Ground Protection ON
Earth / Ground Protection OFF
N
SEF/SGF protection ON
SEF/SGF protection OFF
Y Y
Auto Reclose ON Loss of Phase Protection, if ON, is set to alarm only (ie. no Trip will occur). Cold Load is Idle or is turned off. This means that the threshold multiplier is not being affected by the cold load function. High current lockout ON Loss of Phase Protection ON Sequence Control ON Live Load blocking ON
Auto Reclose OFF Loss of Phase Protection, if ON, is set to normal operation (ie. will Trip).
Protection Enabled
Protection turned OFF
Automatic Protection Group Selection ON
Automatic Protection Group Selection OFF
Cold Load Idle
Y
93
High Current Lockout Loss of Phase Protection Sequence Control
Y
95 96 97 98
N Y
Y Live Load blocking Y Protection enable Y Automatic Protection Group Selection
N00-665 R05
Cleared = ‘0’
N
92
94
Set = ‘1’
Comment
Cold load is NOT Idle. This means that the threshold multiplier is being raised by the cold load pickup function in order to pick up cold load. High current lockout OFF Loss of Phase Protection OFF Sequence Control OFF Live Load blocking OFF
Page 25
Bit
99
Name
Normal Frequency Close
W Series
Modbus Protocol Technical Manual
Y
Note 1
100
Dead Lockout
Y
101 102
LOP / Loop Under Frequency Trip Note 1
N Y
103
Over Frequency Trip Note 1
Y
Set = ‘1’
Cleared = ‘0’
The Under/Over Frequency protection has “Normal Frequency Close” ON Dead Lockout Setting is ON LOP / Loop Linked The Under/Over Frequency protection “Under Frequency Trip” is enabled. The Under/Over Frequency protection “Over Frequency Trip” is enabled.
The Under/Over Frequency protection has “Normal Frequency Close” OFF
Comment
Dead Lockout Setting is OFF LOP / Loop Unlinked The Under/Over Frequency protection “Under Frequency Trip” is disabled. The Under/Over Frequency protection “Over Frequency Trip” is disabled.
Note 1 Under/Over Frequency Protection unavailable on CAPM-4
ACR Accumulated Protection Trip Operation Flags
Name
Bit
W Series
Multiple Flags can be set in this section because they accumulate all the trips in the sequence
Set = ‘1’
Cleared = ‘0’
All fault flags are cleared by one of the following actions :• “Reset Fault Flags and Currents” protocol control command
104
Phase Over Current Trip
Y
One or more trips were caused by Phase Overcurrent Protection
105
Earth / Ground Over Current Trip
N
SEF/SGF Over Current Trip
N
Sequence Advance
Y
One or more trips were caused by Earth / Ground Overcurrent Protection One or more trips were caused by Sensitive Earth / Ground Fault Protection One or more sequence advances occurred.
106
107
•
Any Operator Close action
•
Controller software reset (data is volatile)
•
Start of a new sequence
Comment
ACR Protection Pickup Flags
N00-665 R05
Page 26
Name
W Series
Set = ‘1’
Cleared = ‘0’
108
A Phase Pickup
Y
109
B Phase Pickup
N
110
C Phase Pickup
N
111
Earth/Ground Pickup SEF/SGF Pickup Under Frequency Pickup Over Frequency Pickup
N
The pick up condition has reset The pick up condition has reset The pick up condition has reset The pick up condition has reset The pick up condition has reset The pick up condition has reset
115
Accumulated Phase Overcurrent Trip
Y
A phase A pickup has been detected A phase B pickup has been detected A phase C pickup has been detected An earth/ground pickup has been detected A SEF/SGF pickup has been detected An under frequency pickup has been detected An over frequency pickup has been detected One or more trips were caused by Phase Overcurrent protection.
116
Accumulated Earth/Ground Overcurrent Trip.
N
One or more trips were caused by Earth/Ground Overcurrent protection.
117
Accumulated SEF/SGF Overcurrent Trip
N
One or more trips were caused by Sensitive Earth/Ground fault protection.
118
Accumulated Sequence Advance
Y
One or more sequence advances occurred.
119
NPS Alarm
N
A NPS fault has been picked up. If NPS protection is on, a trip will have occurred.
112 113
114
N N
N
The pick up condition has reset All fault flags are cleared by one of the following actions: • "Reset Fault Flags and Currents" protocol control command. • Any operator close action. • Controller software reset (data is volatile). • Start of a new sequence.
This flags whether a Phase Overcurrent Trip occured. This flag can be set at the same time as other accumulated flags. This flags whether an Earth/Ground Overcurrent Trip occured. This flag can be set at the same time as other accumulated flags. This flags whether an SEF/SGF Overcurrent Trip occurred. This flag can be set at the same time as other accumulated flags. This flags whether a Sequence Advance ocurred. This flag can be set at the same time as other accumulated flags.
The fault flag is cleared by one of the following actions: • • •
N00-665 R05
Comment and Time Resolution
Bit
Modbus Protocol Technical Manual
"Reset Fault Flags and Currents" protocol control command. The NPS current level falls below the pickup value. Controller software reset (data is volatile).
This flags that a NPS fault has been picked up.
Page 27
Cleared = ‘0’
Accumulated NPS Overcurrent Trip.
N
One or more trips were caused by NPS Overcurrent protection.
All fault flags are cleared by one of the following actions: • "Reset Fault Flags and Currents" protocol control command. • Any operator close action. • Controller software reset (data is volatile). • Start of a new sequence.
LOP Alarm
N
A LOP condition has The flag is cleared by one been detected. If LOP of the following actions: protection was on, a trip • The LOP condition is would have occurred. removed. • Controller software reset (data is volatile).
Comment and Time Resolution
Set = ‘1’
121
W Series
120
Name
Bit
Modbus Protocol Technical Manual
This flags whether an NPS Overcurrent Trip occured. This flag can be set at the same time as other accumulated flags.
This flags that a LOP condition has been detected but LOP tripping is Off.
The most recent protection operation was caused by an NPS Overcurrent Protection Trip.
Protection Flags are cleared by one of the following actions:• • •
•
N00-665 R05
Comment and Time Resolution
N
Cleared = ‘0’
Set = ‘1’
Protection Flag – NPS Overcurrent
W Series
122
Name
Bit
ACR NPS Flags
"Reset Fault Flags and Currents" protocol command. Operator Close. At the time of the next protection trip the flags are 'refreshed'. Old flags are cleared and the cause of the 'most recent' protection operation set. Protection turned OFF.
Indicates if the most recent protection operation was caused by an NPS Overcurrent Protection Trip.
Page 28
W Series
Last Trip NPS
N
The Last Trip was caused by a NPS overcurrent fault.
124
NPS Overcurrent Trip 1 NPS Overcurrent Trip 2 NPS Overcurrent Trip 3 NPS Overcurrent Trip 4 Last Trip NPS Overcurrent (Close Reset)
N
NPS Overcurrent Protection Trip 1
N
NPS Overcurrent Protection Trip 2
N
NPS Overcurrent Protection Trip 3
N
NPS Overcurrent Protection Trip 4
Last Trip Flags are cleared by one of the following actions:• "Reset Fault Flags and Currents" protocol command. • Operator Close. • Protection turned OFF. • Start of a new sequence. • At the time of the next trip the flags are 'refreshed'. Old flags are cleared and the cause of the 'most recent' trip set. • Controller reset Protection Flags are cleared by one of the following actions:• "Reset Fault Flags and Currents" protocol command. • Operator Close. • Protection turned OFF. • Start of a new sequence. • Controller reset.
N
The last trip was caused by an NPS Overcurrent Fault.
These flags are cleared by one of the following actions:
125
126
127
128
• • • • 129 130 131
Comment and Time Resolution
Name
123
Set = ‘1’
Bit
Cleared = ‘0’
Modbus Protocol Technical Manual
"Reset Fault Flags and Currents" protocol control command. Any Close action. Protection turned OFF. Controller software reset (data is volatile).
Reserved Reserved Reserved
ACR Loop Automation Flags These flags are only valid when the Loop Automation option is enabled for the current CAPM configuration. They are otherwise always reported as OFF.
N00-665 R05
Page 29
W Series
Modbus Protocol Technical Manual
Set = ‘1’
Cleared = ‘0’
Bit
Name
132 133
Loop Auto On Auto Restore On Loop Auto Tie Restore On
N N
Loop Automation is On Auto Restore is On
Loop Automation is Off Auto Restore is Off
N
Loop Auto Type Feeder Loop Auto Type Midpoint Loop Auto Type Tie Loop Auto Trip Pending Loop Auto Close Pending Loop Auto Trip Request Loop Auto Close Request Reserved Reserved
N
The Tie recloser is configured to restore supply in both directions Recloser type is set to Feeder
The Tie Recloser will only restore supply to its Load side or the Recloser type is not set to Tie Recloser type is not set to Feeder
N
Recloser type is set to Midpoint
Recloser type is not set to Midpoint
N
Recloser type is set to Tie
Recloser type is not set to Tie
N
Loop automation has issued a Trip Request
A loop automation trip is not pending
N
Loop automation has issued a Close Request Set when Loop Automation issues a Trip Request.
A loop automation close is not pending Normal state, cleared on next internal scan after set
Set when Loop Automation issues a Close Request.
Normal state, cleared on next internal scan after set
134
135 136 137 138 139 140 141 142 143
N N
Comment
Name
Bit
Protection Trip 1 144 Phase Over Current Trip
W Series
ACR Input Status Set = ‘1’
Y
Trip was caused by Phase Overcurrent Protection
Earth / Ground Over Current Trip
N
SEF/SGF Over Current Trip
N
147
Sequence Advance
Y
148
Phase A Overcurrent Trip Phase B Overcurrent Trip Phase C Overcurrent Trip
Y
Trip was caused by Earth / Ground Overcurrent Protection Trip was caused by Sensitive Earth / Ground Fault Protection Sequence advance occurred. Phase A Overcurrent Protection Trip Phase B Overcurrent Protection Trip Phase C Overcurrent Protection Trip
145
146
149 150
N00-665 R05
N N
Cleared = ‘0’
Comment
All fault flags are cleared by one of the following actions :• “Reset Fault Flags and Currents” protocol control command Any Operator Close action
Controller software reset Start of a new sequence Cleared by: • protocol command • any operator close or operator trip. This includes remote control commands.
Page 30
Name
Bit
151
Instantaneous Trip Flag
W Series
Modbus Protocol Technical Manual
Set = ‘1’
N Peak Fault Current for trip was above the instantaneous multiplier setting.
Protection Trip 2 152 Phase Over Current Trip
Y
Trip was caused by Phase Overcurrent Protection
Earth / Ground Over Current Trip
N
SEF/SGF Over Current Trip
N
155
Sequence Advance
Y
Trip was caused by Earth / Ground Overcurrent Protection Trip was caused by Sensitive Earth / Ground Fault Protection Sequence advance occurred.
156
Phase A Overcurrent Trip Phase B Overcurrent Trip Phase C Overcurrent Trip Instantaneous Trip Flag
Y
153
154
157 158 159
Protection Trip 3 160 Phase Over Current Trip
N N N
Phase A Overcurrent Protection Trip Phase B Overcurrent Protection Trip Phase C Overcurrent Protection Trip Peak Fault Current for trip was above the instantaneous multiplier setting.
Y Trip was caused by Phase Overcurrent Protection
161
Earth / Ground Over Current Trip
N00-665 R05
N
Trip was caused by Earth / Ground Overcurrent Protection
Cleared = ‘0’
Comment
control commands. • start of a new sequence. The time stamp reflects this.
Set at the instant of the most recent trip peak current event if the peak current for the trip was greater than the instantaneous setting. Four of these flags are provided: one for each trip in the sequence.
All fault flags are cleared by one of the following actions :• “Reset Fault Flags and Currents” protocol control command Any Operator Close action
Controller software reset •
Start of a new sequence
Cleared by: • protocol command • any operator close or operator trip. This includes remote control commands. • start of a new sequence. The time stamp reflects this.
Set at the instant of the most recent trip peak current event if the peak current for the trip was greater than the instantaneous setting. Four of these flags are provided: one for each trip in the sequence.
All fault flags are cleared by one of the following actions :• “Reset Fault Flags and Currents” protocol control command •
Any Operator Close action
Page 31
Name
Bit
W Series
Modbus Protocol Technical Manual
162
SEF/SGF Over Current Trip
N
163
Sequence Advance
Y
164
Phase A Overcurrent Trip Phase B Overcurrent Trip Phase C Overcurrent Trip Instantaneous Trip Flag
Y
165 166 167
N N
Set = ‘1’
Trip was caused by Sensitive Earth / Ground Fault Protection Sequence advance occurred. Phase A Overcurrent Protection Trip Phase B Overcurrent Protection Trip Phase C Overcurrent Protection Trip
N Peak Fault Current for trip was above the instantaneous multiplier setting.
Protection Trip 4 168 Phase Over Current Trip
Y Trip was caused by Phase Overcurrent Protection
169
Earth / Ground Over Current Trip
N
170
SEF/SGF Over Current Trip
N
171 172
Reserved Phase A Overcurrent Trip Phase B Overcurrent Trip Phase C Overcurrent Trip Instantaneous Trip Flag
173 174 175
N00-665 R05
Y N N N
Trip was caused by Earth / Ground Overcurrent Protection Trip was caused by Sensitive Earth / Ground Fault Protection
Cleared = ‘0’
•
Controller software reset
•
Start of a new sequence
Cleared by: • protocol command • any operator close or operator trip. This includes remote control commands. • start of a new sequence. The time stamp reflects this.
Comment
Set at the instant of the most recent trip peak current event if the peak current for the trip was greater than the instantaneous setting. Four of these flags are provided: one for each trip in the sequence.
All fault flags are cleared by one of the following actions :• “Reset Fault Flags and Currents” protocol control command •
Any Operator Close action
•
Controller software reset
Phase A Overcurrent Protection Trip Phase B Overcurrent Protection Trip Phase C Overcurrent Protection Trip
Cleared by: • protocol command • any operator close or operator trip. This includes remote control commands. Peak Fault Current for • start of a new trip was above the sequence. The time instantaneous multiplier stamp reflects this. setting.
Set at the instant of the most recent trip peak current event if the peak current for the trip was greater than the instantaneous setting. Four of these flags are provided: one for each trip in the sequence.
Page 32
Modbus Protocol Technical Manual
Name
Bit
176 177 178 179 180 181 182 183 184 185 186 187
IOEX Input 1 IOEX Input 2 IOEX Input 3 IOEX Input 4 IOEX Input 5 IOEX Input 6 IOEX Input 7 IOEX Input 8 IOEX Input 9 IOEX Input 10 IOEX Input 11 IOEX Input 12
N00-665 R05
W Series
ACR IOEX Inputs
Y Y Y Y Y Y Y Y Y Y Y Y
Set = ‘1’
Input Asserted Input Asserted Input Asserted Input Asserted Input Asserted Input Asserted Input Asserted Input Asserted Input Asserted Input Asserted Input Asserted Input Asserted
Cleared = ‘0’
Input Not Asserted Input Not Asserted Input Not Asserted Input Not Asserted Input Not Asserted Input Not Asserted Input Not Asserted Input Not Asserted Input Not Asserted Input Not Asserted Input Not Asserted Input Not Asserted
Comment
Returned State changes after 30ms debounce.
Page 33
Modbus Protocol Technical Manual
Appendix C.2 ACR Modbus - Analogue Inputs These are the analogue input status points that are available. They are stored in holding registers in the CAPM. Each holding register is 16 bits wide. The phase designation A, B, C is determined by the user, refer to the equipment manual for more information. Phase terminology is explained in section 2.3. W series: support is indicated in tables below by a ‘Y’. If indicated as ‘N’ then value is always 0.
Scaling Modbus analogue values are transmitted as a 16 bit value with an additional sign bit. Where the CAPM range of analogue values exceeds the range of a 16 bit number (-32768 to 32767) the values are scaled. All analogue values are scaled with 1 count = 1 Resolution/Units. In other words, 1 transmitted count = raw value ÷ resolution. For example: a phase voltage of 1000V will be transmitted as a count of 250 (=1000 ÷ 4) The transmitted value must therefore be re-scaled at the master station before being displayed to the SCADA operator, logged, etc.
Modbus Implementation Request Code(s): 03 (Read Holding Registers) Reply Codes(s): 03 (Read Holding Registers) Error Code: 0x83 Exception Code: 01 (Illegal Function), 02 (Illegal Data Address), 03 (Illegal Data Value), 04 (Slave Device Failure) ACR Line Currents
Max
Resolution/ Units
Note 1
Min
A-Phase Current B-Phase Current C-Phase Current (Earth / Ground) Current
W Series
0 1 2 3
Name
Holding Register
Note that these relate to user-designated phases rather than the physical bushings.
Y N N N
0 0 0 0
16000 16000 16000 16000
1A 1A 1A 1A
Note 1) Not available for a standard U-series ACR without external CVTs. Value is always zero.
Min
Max
Resolution/ Units
Ai Phase-(Earth / Ground) Voltage Bi Phase-(Earth / Ground) Voltage Ci Phase-(Earth / Ground) Voltage Ax Phase-(Earth / Ground) Volts
W Series
4 5 6 7
Name
Holding Register
ACR Voltage Measurements Voltages are provided either for all 6 Terminals or for only 3 Terminals depending upon the model of ACR.
Y N N Y
0 0 0 0
40000 40000 40000 40000
2V 2V 2V 2V
N
0
40000
2V
N
0
40000
2V
N N
0 0
40000 40000
2V 2V
Note 1
8
Bx Phase-(Earth / Ground) Volts Note 1
9
Cx Phase-(Earth / Ground) Volts Note 1
10 11
A-Bi Phase-Phase Voltage B-Ci Phase-Phase Voltage
N00-665 R05
Page 34
Modbus Protocol Technical Manual 12 13 14 15 16
C-Ai Phase-Phase Voltage A-Bx Phase-Phase Volts Note 1 B-Cx Phase-Phase Volts Note 1 C-Ax Phase-Phase Volts Note 1 Frequency Note 2
N N N N Y
0 0 0 0 45
40000 40000 40000 40000 65
2V 2V 2V 2V 0.1Hz
Note 1. Not available in standard U-series ACR without external CVTs. Value always zero. 2. Only available on CAPM5/6. Return 0 if unavailable.
Max
Resolution/ Units
20
Min
18 19
W Series
17
Name
Holding Register
ACR System Power
Y
-131 MW
131MW
4 kW
Y Y
0 0
131MVA 131MVAR
4 kVA 4 kVAR
Y
0.00
1.00
0.01
System kW This can be a signed quantity that indicates direction of power flow, or an unsigned quantity that is always positive regardless of the direction of the power flow. This is determined by the controller configuration System Apparent Power System Reactive Power Unsigned quantity which is always positive irrespective of direction of power flow System Power Factor Note 1 This is calculated from Real and Apparent power.
Note 1. All data is transmitted as integers. Power factor has an extra built in scale factor of 100 ie. range 0.00 to 1.00 with resolution 0.01 is transmitted as 0 to 100 with resolution 1. ACR SF6 Pressure If the ACR Memory Data is not valid then the pressure is zeroed.
W Series
Min
Max
Resolution/ Units
N N
-100 -14
300 44
1 kPaG 0.1 PSI
Min
Max
Resolution/U nits
Gas Pressure, kPag. Gas Pressure, PSI
W Series
21 22
Name
Holding Register
Gas Pressure is not supported on U-Series ACR, value will be zero.
0.0
100.0
0.01 %
23 24
Name
Holding Register
ACR Switchgear and Controller Details
Reserved I Contact Life
N00-665 R05
Note 1
N Y
Page 35
Modbus Protocol Technical Manual 25 26 27 28
II Contact Life Note 1 III Contact Life Note 1 Operations Counter Note 2 Phase Designation 0 = A-B-C 1 = A-C-B 2 = B-A-C 3 = B-C-A 4 = C-A-B 5 = C-B-A The order A-B-C indicates the mapping between phases (A, B, C) and bushing (I-II-III). For example designation 2 maps B phase to I, A phase to II and C phase to III. The phase designation is set up on the controller so that the data in the database matches the HV terminal wiring.
N N Y N
0.0 0.0 0 0
100.0 100.0 32768 5
0.01 % 0.01 % 1 Operation 1
Note 1. All data is transmitted as integers. Contact life has an extra built in scale factor of 100 ie range of 0.0% to 100.0% with resolution 0.01% is transmitted as 0 to 10000 with resolution 1. 2. These values are zeroed when ACR Memory Valid is not valid. ACR Cumulative Protection Sequence Data These points show all sources that record a max current event in the event log during a protection sequence. If the same source has more than one max current event then the value in the point will be the max current from the last trip of the sequence. All fault currents are cleared to zero by one of the following actions:• “Reset Fault Flags and Currents” protocol control command
Name
N00-665 R05
Resolution/ Units
34
Max
33
A Fault Current – Written on an A-Max event. B Fault Current – Written on a B-Max event. C Fault Current – Written on a C-Max event. Earth / Ground Fault Current - Written on a GMax event. This includes SEF/SGF Fault currents. During a protection sequence the value increments indicating the current trip or sequence advance. After a protection sequence the final trip or sequence advance that occurred. Protection Group that is in service. 0 = Group A 1 = Group B … 9 = Group J
Min
29 30 31 32
W Series
Any Operator Close action Controller reset (data is volatile) Start of a new sequence
Holding Register
• • •
Y N N N
0 0 0 0
16000 16000 16000 16000
1A 1A 1A 1A
Y
1
4
1
Y
0
9
1
Page 36
W Series
Min
Max
Resolution/ Units
N
0
2
1
Min
Max
Resolution/ Units
NPS Protection State 0 = NPS Protection OFF 1 = NPS Protection ON 2 = NPS Protection Alarm Only
W Series
35
Name
Holding Register
Modbus Protocol Technical Manual
Y
0
9
1
36
Name
Holding Register
ACR Protection State
The number of the Protection Group which was active at the start of the sequence 0 = Group A 1 = Group B … 9 = Group J
ACR Trip Counters
W Series
Min
Max
Resolution/ Units
A Phase O/C Trip Counter B Phase O/C Trip Counter C Phase O/C Trip Counter Earth O/C Trip Counter SEF O/C Trip Counter LOP Trip Counter FRQ Trip Counter
Y N N N N N Y
0 0 0 0 0 0 0
99 99 99 99 99 99 99
1 1 1 1 1 1 1
Holding Register
Name
These counters are cleared by the ‘reset flags’ command and by turning protection On or OFF. These counters do not increment when switchgear is an LBS. When the counters reach there max value, they do not roll-over, instead they ‘stick’ at this max value.
37 38 39 40 41 42 43
ACR Pickup Counters
N00-665 R05
Min
Max
Resolution/ Units
A Phase O/C Pickup Counter B Phase O/C Pickup Counter
W Series
44 45
Name
Holding Register
These counters are cleared by the ‘reset flags’ command and by turning protection On or OFF. When the counters reach there max value, they do not roll-over, instead they ‘stick’ at this max value.
Y N
0 0
99 99
1 1
Page 37
Modbus Protocol Technical Manual 46 47 48 49 50 51
C Phase O/C Pickup Counter Earth O/C Pickup Counter SEF O/C Pickup Counter LOP Indication Counter FRQ Pickup Counter Phase Overcurrent Pickup Counter
N N N N Y N
0 0 0 0 0 0
99 99 99 99 99 99
1 1 1 1 1 1
ACR Loop Automation
Min
Max
Resolution/U nits
Loop automation time remaining prior to a trip or close action occurring. For no action pending value is zero.
W Series
52
Name
Holding Register
This value is only valid when the Loop Automation option is enabled for the current CAPM configuration. It is otherwise always reported as zero.
N
0
1800
1 second
ACR Protection Sequence Data These analogue points record data about the protection sequence including maximum fault currents. These are derived from the max current events that are seen in the Operator Control Panel event record and record the current for each phase and for earth/ground.
W Series
Min
Max
Resolution/ Units
Name
Holding Register
For any one protection trip or sequence advance more than one fault current can be set. For example a Phase/Phase fault might set an A-Phase current and a B-Phase current. Other data recorded includes the number of trips in the protection sequence and the Protection Group that was active at the time of the protection operation. Data is cleared to zero by the following actions:• “Reset Fault Current” remote control command defined below • Any Operator Close or Trip action • Start of a new sequence. This data is volatile, ie they are zeroed on controller software reset.
Y N N N
0 0 0 0
16000 16000 16000 16000
1A 1A 1A 1A
Y N N N
0 0 0 0
16000 16000 16000 16000
1A 1A 1A 1A
Y
0
16000
1A
Protection Trip 1 53 54 55 56
A Fault Current – Written on an A-Max event. B Fault Current – Written on a B-Max event. C Fault Current – Written on a C-Max event. Earth / Ground Fault Current - Written on a G-Max event. This includes SEF/SGF Fault currents.
Protection Trip 2 57 58 59 60
A Fault Current – Written on an A-Max event. B Fault Current – Written on a B-Max event. C Fault Current – Written on a C-Max event. Earth / Ground Fault Current - Written on a G-Max event. This includes SEF/SGF Fault currents.
Protection Trip 3 61
A Fault Current – Written on an A-Max event.
N00-665 R05
Page 38
Min
Max
Resolution/ Units
B Fault Current – Written on a B-Max event. C Fault Current – Written on a C-Max event. Earth / Ground Fault Current - Written on a G-Max event. This includes SEF/SGF Fault currents.
W Series
62 63 64
Name
Holding Register
Modbus Protocol Technical Manual
N N N
0 0 0
16000 16000 16000
1A 1A 1A
Y N N N
0 0 0 0
16000 16000 16000 16000
1A 1A 1A 1A
Protection Trip 4 65 66 67 68
A Fault Current – Written on an A-Max event. B Fault Current – Written on a B-Max event. C Fault Current – Written on a C-Max event. Earth / Ground Fault Current - Written on a G-Max event. This includes SEF/SGF Fault currents.
ACR Accumulator Data
Min
Max
Resolution/ Units
KWH Cumulative Note 1 Source Outages Note 2 Source Outage Duration Note 2 Load Outages Note 2 Load Outage Duration Note 2 Reserved KWH Cumulative Forward Note 3 KWH Cumulative Reverse Note 3
W Series
70 72 74 76 78 80 82 84
Name
Holding Register
These points use two holding registers. They are signed 32 bit numbers (-2147483648 to 2147483647). The first register contains the least significant bits.
Y Y Y Y Y
0 0 0 0 0
2147483647 2147483647 2147483647 2147483647 2147483647
1 KWH 1 Count 1 Seconds 1 Count 1 Second
Y Y
0 0
2147483647 2147483647
1 KWH 1 KWH
Note: 1. This accumulates the total kWH flowing through the ACR. If the controller is set for Power Flow Unidirectional then the cumulative total increases irrespective of the direction of power flow to show the total power that has passed through the device. If the controller is set to Bi-Directional power flow then the cumulative total can increase or decrease reflecting the nett power flow. 2. The power flow direction (source/load designation) is determined by the user. Refer to Power Flow Direction Binary Input for status and Binary Output for control. 3. Use relevant Digital Control (55 or 56) to collect data.
W Series
Min
Max
Resolution/ Units
NPS Fault Trip 1 NPS Fault Trip 2 NPS Fault Trip 3 NPS Fault Trip 4 Most Recent Trip NPS Fault
N N N N N
0 0 0 0 0
16000 16000 16000 16000 16000
1A 1A 1A 1A 1A
Holding Register
Name
ACR Protection Data
86 87 88 89 90
N00-665 R05
Page 39
W Series
Min
Max
Resolution/ Units
Y N N N N
0 0 0 0 0
16000 16000 16000 16000 16000
1A 1A 1A 1A 1A
N Y N N
0 0 0 0
16000 16000 16000 16000
1A 1A 1A 1A
Min
Max
Resolution/ Units
Maximum Phase A Fault Current Maximum Phase B Fault Current Maximum Phase C Fault Current Maximum Earth/Ground Fault Current Maximum NPS Fault Current Reserved NPS Current A-Phase Load Current Prior to Last Pickup Note 1 B-Phase Load Current Prior to Last Pickup Note 1 C-Phase Load Current Prior to Last Pickup Note 1
W Series
91 92 93 94 95 96 97 98 99 100
Name
Holding Register
Modbus Protocol Technical Manual
N
0
18
1
101
Name
Holding Register
ACR Automation
Auto Changeover Status 0 - Auto-Changeover OFF. 1 - Auto-Changeover ON. 2 - ACO load MASTER. 3 - ACO load SLAVE. 4 - ACO No SLAVE comms. 5 - ACO abort - status 1. 6 - ACO abort - status 2. 7 - ACO abort - status 3. 8 - ACO abort - status 4. 9 - ACO abort - status 5. 10 - ACO abort - status 6. 11 - ACO abort - status 7. 12 - ACO abort - status 8. 13 - ACO abort - status 9. 14 - ACO abort - status 10. 15 - ACO abort - status 11. 16 - ACO abort - status 12. 17 - ACO abort - status 13. 18 - ACO abort - status 14.
N00-665 R05
Page 40
Max
Resolution/ Units
Y
Min
Generator Control Status
W Series
102
Name
Holding Register
Modbus Protocol Technical Manual
0
8
1
0 - GenCtrl OFF. 1 - Switch Closed. 2 - Line Dead Check. 3 - Wait Switch Open. 4 - Wait Generator Live. 5 - Generator Running. 6 - Line Live Check. 7 - Wait Generator OFF. 8 - Wait Switch Closed.
Min
Max
Resolution/ Units
Reserved Time of Maximum Average Current.
W Series
103 104
Name
Holding Register
ACR Daily Data
Y
1
1440
1 Min
Y
0
16000
1A
Y
1
1440
1 Min
This is the end time of the maximum average demand current of all relevant phases for the previous full day ending at midnight. The time is in minutes since midnight. 105
Maximum Average Demand Current. This is the maximum average demand current of all relevant phases for the previous full day ending at midnight.
106
Average Sampling Period. This was the average sampling period at the end of the previous day (either the Average Demand or Configured History period).
Note: 1. Average taken over Demand or Configured History period.
N00-665 R05
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Modbus Protocol Technical Manual
Appendix C.3 ACR Modbus - Digital Control Coil control is only supported when the controller is in Remote mode. If the controller is in Local or Do Not Operate mode then the response is 07 (NAK). Both the "force coil ON" and "force coil OFF" are valid.
Modbus Implementation
Coil
0
Name
Work Tag
W Series
Request Code(s): 05 (Force Single Coil) Reply Codes(s): 05 (Force Single Coil) Error Code: 0x85 Exception Code: 01 (Illegal Function), 02 (Illegal Data Address), 03 (Illegal Data Value), 04 (Slave Device Failure)
N
On = ‘1’
Applies Work Tag Rejected if: • CAPM is in LOCAL Mode
Removes Work Tag
Earth / Ground Protection OFF and SEF/SGF Protection OFF Rejected if: • earth/ground fault OFF is not allowed. Disable SEF/SGF protection
1
Earth / Ground Fault protection
N
Enable Earth / Ground Protection Rejected if: • earth/ground fault OFF is not allowed.
2
SEF/SGF protection
N
3 4
Auto Reclose ACR/LBS Control
Y Y
SEF/SGF protection ON and Earth / Ground Protection ON Rejected if: • SEF/SGF is not available Auto Reclose ON Close Rejected if: • Close coil is isolated • CAPM is in LOCAL control mode • SF6 gas pressure is low (if applicable) AND low gas lockout is ON • Work Tag is applied • Switchgear data invalid • Mechanically interlocked (if applicable) • Live load blocking ON AND any load side terminal live • Trip and/or Close
N00-665 R05
Off = ‘0’
Comment
Rejected if: • CAPM is in LOCAL Mode
Auto Reclose OFF Trip Rejected if: • Trip coil is isolated • Switchgear data invalid • ACR AND SF6 gas pressure is low (if applicable) AND low gas lockout is ON • LBS AND SF6 gas pressure is low (if applicable) • LBS AND Mechanically interlocked •
Page 42
Coil
Name
W Series
Modbus Protocol Technical Manual
On = ‘1’
6
Protection Control
Y
capacitors are charging or failed Resets all Analog Fault Currents to zero and clears all binary protection trip flags Enable Protection
7
Power Flow Direction
Y
Source X, Load I
5
Reset Fault Flags and Currents
Y
Note 2
Off = ‘0’
Comment
No Action
Turn ALL Protection OFF Rejected if: • protection OFF is not allowed Source I, Load X
Note 1
8
Reset Controller
Y
Forces a controller software reset
9 10 11
Reserved Reserved Cold Load Idle/Max
Y
12
High Current Lockout
Y
13
Loss of Phase Protection Sequence Control Live Load Blocking
N Y
Set cold load time to its maximum value. This means that the cold load threshold current will be set to its maximum value Rejected if: • Cold load support is OFF Enable High Current Lockout Enable Loss of Phase Protection Enable Sequence Control
Set cold load time to zero. This means that the threshold multiplier will not be affected by the cold load function. Rejected if: • Cold load support is OFF Disable High Current Lockout Disable Loss of Phase Protection Disable Sequence Control
Y
Live Load blocking ON
Live Load blocking OFF Freezes the KWH Cumulative accumulator value ready for transmission and resets the running count back to zero Trip
14 15 16
Freeze/ Reset
17
DCB Control
18
APGS / ADGS Control (Code Version 023-03.00 and later)
N00-665 R05
KWH Cumulative Accumulator freeze/reset operation.
Y
Close Automatic Protection Group Selection ON Rejected if: • APGS ON is Not Allowed • Loop Automation ON
Operate the Dummy Circuit Breaker Automatic Protection Controls Automatic Group Selection OFF Protection Group Selection
Page 43
Coil
Name
W Series
Modbus Protocol Technical Manual
On = ‘1’
Off = ‘0’
Loop Automation ON Rejected if: • Loop automation capability not available • Trip coil isolated • Close coil isolated • Mechanism fail • Switchgear data invalid • Battery not normal • SF6 Gas Pressure is low (if applicable) AND Low Gas Lockout is ON • Tripped AND (Midpoint OR Feeder) • U Series AND no external CVTs AND (TIE OR Auto Restore ON) Supply Outage Measurement ON
Loop Automation OFF Rejected if: • Loop automation capability not available
19
Loop Automation Control
20
Supply Outages Control
21
Supply Outages Reset
22
Normal Frequency Close
23 24
Reserved Dead Lockout
25
LOP / Loop
26
Under Frequency Trip
Under Frequency Protection Tripping ON Rejected if : CAPM 4
27
Over Frequency Trip
Over Frequency Protection Tripping ON Rejected if: • CAPM 4
N00-665 R05
Resets all Supply Outage accumulator values for the controller, this is not protocol specific Turn Normal Frequency Close ON Rejected if: • Switch is LBS • CAPM 4 Turn Dead Lockout Setting ON Rejected if: • Switch is LBS Make LOP / Loop Linked Rejected if: • Switch is LBS
Comment
Controls Loop Automation.
Supply Outage Controls Supply Measurement OFF Outage Measurement Refer note 3 Supply Outage Accumulator reset. Refer note 3 Turn Normal Frequency Close OFF Rejected if: • Switch is LBS • CAPM 4
Controls the state of the Normal Frequency Close facility. Refer to Note 4
Turn Dead Lockout Setting OFF
Turns Dead Lockout Setting ON and OFF Note 5
Make LOP / Loop Unlinked
Links and unlinks the LOP and Loop Auto ON setting Note 5 Enables or disables Under frequency Protection Trip
Under Frequency Protection Tripping OFF Rejected if : CAPM 4 Over Frequency Protection Tripping OFF Rejected if: • CAPM 4
Enables or disables Over Frequency Protection Trip
Page 44
Coil
28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
Name
W Series
Modbus Protocol Technical Manual
On = ‘1’
Off = ‘0’
Comment
Y Y Y Y Y Y Y Y Y Y
Group A ON Group B ON Group C ON Group D ON Group E ON Group F ON Group G ON Group H ON Group I ON Group J ON
No Action No Action No Action No Action No Action No Action No Action No Action No Action No Action
Only one group can be active at any time. Activating any of these protection groups will automatically reset the previous setting.
Y
Sets an IOEX configurable point.
Clears an IOEX configurable point.
Note: The only valid Control Type is ‘Sustained’.
Note: The only valid Control Type is ‘Sustained’.
Sets or clears an IOEX-configurable point, for Protocol Controls.
50
Protection Group A Protection Group B Protection Group C Protection Group D Protection Group E Protection Group F Protection Group G Protection Group H Protection Group I Protection Group J Reserved Reserved Reserved Reserved Protocol IOEX Control 1 Protocol IOEX Control 2 Protocol IOEX Control 3 Protocol IOEX Control 4 Protocol IOEX Control 5 Protocol IOEX Control 6 Protocol IOEX Control 7 Protocol IOEX Control 8 ACO Auto Restore
Y
ACO Auto Restore ON. Rejected if: • ACO feature is not available. • Generator Control is available. • Loop Automation is available.
ACO Auto Restore OFF. Rejected if: • Generator Control is available. • Loop Automation is available. • ACO feature is not available.
51
ACO Enable
Y
ACO ON. Rejected if: • ACO feature is not available. • Generator Control available.
52
ACO Mode
Y
ACO Mode = Break before Make. Rejected if: • ACO feature is not available.
43 44 45 46 47 48 49
N00-665 R05
Y Y Y Y Y Y Y
ACO OFF.
ACO Mode = Make before Break. Rejected if: • ACO feature is not available.
Turns ACO Auto Restore ON or OFF.
Enables ACO.
Set the ACO operation mode to Make before Break or Break before Make.
Page 45
Coil
Name
W Series
Modbus Protocol Technical Manual
On = ‘1’
Off = ‘0’
Comment
53
Generator Control
Y
Turn Generator Control on. Rejected if: • Generator Control is not available. • Loop Automation is available. • Auto-changeover is available.
Turn Generator Control Off.
Generator Control enabled.
54
ACO Rank
Y
Set ACO Rank to be master. Rejected if: • ACO feature is not available. • Switchgear is open. • ACO is enabled.
Set ACO rank to be slave. Rejected if: • ACO feature is not available. • Switchgear is closed. • ACO is enabled.
ACO Rank.
55
Freeze/Reset kWH Accum Fwd
Y
56
Freeze/Reset kWH Accum Rev
Y
57
Loss of Phase Alarm
N
Freezes the kWH Cumulative Forward accumulator value ready for transmission and resets the running count back to zero. Freezes the kWH Cumulative Reverse accumulator value ready for transmission and resets the running count back to zero. Loss of Phase Alarm ON. Rejected if: • W Series. • LOP and Loop Auto linked. • LOP Protection OFF.
kWH Cumulative Forward Accumulator freeze/reset operation. kWH Cumulative Reverse Accumulator freeze/reset operation. Loss of Phase Alarm OFF. Rejected if: • W Series. • LOP and Loop Auto linked. • LOP Protection OFF.
Notes. 1. Changing these settings affects the currently active protection group. The change is put into effect immediately and is permanent for that group. In other words is equivalent to selecting that protection group on the operator control panel, changing the setting and then putting the change into service. 2. Changing the Source/Load direction affects the following aspects of the operation of the controller: • Whether the source or load corresponds to (I) or (X) on the voltage measurement displays • Which direction is positive power flow for use on the kW Signed total in System Power • Which is the source or load for Live Load Blocking • Which is the source or load for Directional Blocking • Refer section Appendix C.1, Power Flow Direction for status 3. Code Version 024-01.00 and later 4. Code Version 025-01.00 and later 5. Code Version 026-01.00 and later
N00-665 R05
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Modbus Protocol Technical Manual
Appendix C.4 ACR Modbus - Analogue Control These are the registers able to be preset by the controller. If W series is indicated as 'Y' below then register is supported other wise no action is taken.
Modbus Implementation Request Code(s): 06 (Preset Single Register) Reply Codes(s): 06 (Preset Single Register) Error Code: 0x86 Exception Code: 01 (Illegal Function), 02 (Illegal Data Address), 03 (Illegal Data Value), 04 (Slave Device Failure)
N00-665 R05
Min
Max
Units
1
Protection Group selection 0 = Group A 1= Group B … 9 = Group J NPS Protection Control 0 = NPS Protection OFF. 1 = NPS Protection ON. 2 = NPS Protection Alarm.
W Series
0
Name
Holding Register
Analog Controls
Y
0
9
N/A
N
0
2
N/A
Page 47
Modbus Protocol Technical Manual
Appendix DLBS Modbus Points Appendix D.1 LBS Modbus - Digital Inputs These points show the state of the switchgear and/or the controller. The phase designation A, B, C is determined by the user, refer to the equipment manual for more information. Phase terminology is explained in section 2.3. W series support is indicated below by a ‘Y’. If indicated as ‘N’ then value is always OFF.
Modbus Implementation Request Code(s): 02 (Read Input Status) Reply Codes(s): 02 (Read Input Status) Error Code: 0x82 Exception Code: 01 (Illegal Function), 02 (Illegal Data Address), 03 (Illegal Data Value), 04 (Slave Device Failure)
LBS and Controller State Flags
Name
Bit
0
Abnormal Operator conditions
1
Maintenance Required
2
Auxiliary Supply Fail
N00-665 R05
Set = ‘1’
Cleared = ‘0’
For any of the following conditions:• Trip or Close Isolated, • LBS Mechanically locked open (if applicable) • Work Tag Applied For any of the following conditions:• Battery not normal • Capacitor charge failure • Low power mode • Low SF6 gas pressure (if applicable) • LBS data not valid (includes connection to an invalid switch type) • Any vacuum interrupter contact life is less than 20% • Mechanical failure\ • LBS Data invalid Auxiliary supply has failed
None of the specified conditions are true
This flag shows that the operator has the LBS in an abnormal state such as “work tag applied”. This means that it will operate differently to its normal mode of operation.
No maintenance required
The controller has detected one or more conditions which require maintenance. This point cannot become Set until at least five minutes after controller start.
Comment
Auxiliary supply is normal
Page 48
Modbus Protocol Technical Manual
Name
Bit
Set = ‘1’
Cleared = ‘0’
Comment
3
Controller Mode
Local Control Enabled Remote Control Disabled
Local control Disabled Remote control Enabled
The controller is either in Local or Remote control mode. This affects the closing command the permission to set/remove work tag.
4 5
LBS Tripped (open) LBS Closed
LBS Tripped LBS Closed
LBS not Tripped LBS not Closed
These are repeats of the mechanism travel switches. When the LBS is disconnected from the control cubicle they are both cleared.
6 7 8 9 10 11 12
Phase Ai Live Phase Bi Live Phase Ci Live Phase Ax Live Note 1 Phase Bx Live Note 1 Phase Cx Live Note 1 Source Voltage Status
Phase is live
Phase is dead
Shows if the phase bushings are above or below the live line threshold. Phase designation is determined by user.
13
Load Voltage Status
Shows that any of the three phases of the designated Source side or Load side are live.
All of the source side Terminals dead All of the load side Terminal dead
Note that these points are different to the Load/Source Live/Dead events in the controller event record
14
Load Current On
Current of 2.5A or more is flowing in at least one phase
Current of less than 2.5A is flowing in all three phases
15 16 17 18 19 20
Reserved Power Flow Direction Reserved Reserved Reserved Locked
Source X, Load I
Source I, Load X
LBS Locked.
LBS not locked.
21
LBS Memory Data Invalid
LBS Memory Data not LBS Memory Data valid Valid
N00-665 R05
Shows that the LBS is mechanically locked in position. Not supported on the N-Series where it will always be zero. Shows that the controller has retrieved the data from the LBS memory. When invalid the switchgear attributes and the gaspressure are zeroed,
Page 49
Modbus Protocol Technical Manual
Name
Bit
Set = ‘1’
Cleared = ‘0’
Comment
Shows the connection state of the cable between the switchgear and the controller. When connected to the LBS Trip, Close and Locked indications are valid. When disconnected from the LBS data will be forced invalid
22
Switchgear Connection
Switch disconnected from control cubicle.
Switch connected from control cubicle.
23
Contacts Life Low
24
SF6 Gas Pressure Low or Invalid
When any vacuum interrupter contact life is less than 20%. Gas pressure Low or Invalid
When all vacuum interrupters have contact life >= 20% Gas Pressure Normal, or Not Known, or Not a switchgear which has SF6.
25
Close Isolate
26
Trip Isolate
27
Work Tag
Close Isolate Switch OFF/ISOLATE(i.e. Close is disabled) Trip Isolate Switch OFF (i.e. Trip is disabled) Work Tag Applied
Close Isolate Switch ON/ENABLE (i.e. Close is enabled) Trip Isolate Switch ON(i.e. Trip is enabled) Work Tag Removed
28
Battery Supply
Only set when switchgear is connected and LBS memory data is valid and switchgear type has SF6. Shows the state of the Trip and Close isolate switches on the control panel
The controller can have a work tag. This affects the closing command
Battery supply not normal. This includes :Battery Off Battery Overvolt Battery Low Volts Capacitor Charge Failure Capacitor Charge Failed
Battery supply normal
Capacitor Charge OK
The Trip/Close Capacitors have failed to charge
30
Mechanism Failure
Mechanism Failure
Mechanism OK
The switchgear has failed to Trip or Close electrically
31
Dummy LBS Closed
Dummy LBS Closed
Dummy LBS Not Closed
The dummy LBS is an internal point useful for SCADA system testing. The value of the DCB is nonvolatile.
32 33
Reserved Supply Outage Measurement
Supply Outage Measurement is ON.
34
Door Open
Door open.
Supply Outage Measurement is OFF Door closed.
35
Switch Function
Function is ACR
Function is LBS
29
N00-665 R05
Status of cubicle door. Only valid if hardware option installed.
Page 50
Modbus Protocol Technical Manual
Name
Bit
Set = ‘1’
36
Auxiliary Supply Fail Delayed
37 38 39
Reserved Reserved Reserved
Auxiliary supply has failed for more than 120 seconds.
Cleared = ‘0’
Auxiliary supply restored for more than 20 seconds.
Comment
Status of controller auxiliary supply (delayed).
Note 1. Not available with standard U series without external CVTs, always 0.
Cleared = ‘0’
Comment and Time Resolution
40
Prot A Active
Protection Group A is active
Protection Group A is not active
Only one protection group is active at any one time.
41
Prot B Active
42
Prot C Active
43
Prot D Active
44
Prot E Active
45
Prot F Active
46
Prot G Active
47
Prot H Active
48
Prot I Active
49
Prot J Active
Protection Group B is active Protection Group C is active Protection Group D is active Protection Group E is active Protection Group F is active Protection Group G is active Protection Group H is active Protection Group I is active Protection Group J is active
Protection Group B is not active Protection Group C is not active Protection Group D is not active Protection Group E is not active Protection Group F is not active Protection Group G is not active Protection Group H is not active Protection Group I is not active Protection Group J is not active
Bit
Name
Set = ‘1’
LBS Protection Group Flags
LBS Detection Flags This group of points indicates what happened in the most recent fault detection. Unlike the ACR, these flags don’t attempt to reconstruct a fault sequence. The flags are not cumulative, they are cleared as each new fault is detected. For example, if there is an earth fault followed by a phase fault, the earth fault flag will be cleared when the phase fault flag is set. In addition analogue data is available which shows the fault currents. Most of these flags are cleared either by protocol command or when the switchgear is tripped/closed by the operator or when a new fault is detected. This data is volatile, i.e. it is zeroed on controller software reset. If there is more than one protocol running simultaneously in the controller this data is replicated between the protocols so that each master station can clear its data independently from the others..
N00-665 R05
Page 51
Comment
Set = ‘1’
50
Sequence in Progress
Start of sequence that is the Supply Interrupt count is non-zero
End of sequence
This shows that a detection sequence has started and not yet completed.
51
A Phase Overcurrent Fault
A Phase Overcurrent Fault
These flags show which elements were
52
B Phase Overcurrent Fault C Phase Overcurrent Fault
•
56
B Phase Overcurrent Fault C Phase Overcurrent Fault Earth/Ground Overcurrent Fault SEF/SGF Overcurrent Fault Supply Interrupt
Cleared by • Operator trip • Any close
57
Sectionaliser Trip
Sectionaliser Trip
58
Operator Trip
59
OCPM Operator Trip
60
IOEX Operator Trip
61 62
Reserved Fast Trip
63
Protocol Trip
64
Generator Control
Cleared by any close The most recent trip was caused by any trip that was action not caused by the CAPM internal protection (i.e. A combination of an OCPM Operator Trip OR an IOEX Operator Trip OR a Protocol Trip OR WSOS Trip) The most recent trip was caused by a local or remote operator panel trip. The most recent trip was caused by an IOEX Operator Trip input Cleared by • Any close The most recent trip was • Reset Flags' caused by a Fast Trip Input. Protocol The most recent trip was Command caused by a remote protocol or WSOS trip request. Generator Control is ON. Generator Control is OFF.
65 66 67
Reserved Reserved Reserved
Bit
Name
Cleared = ‘0’
Modbus Protocol Technical Manual
53 54 55
Earth/Ground Overcurrent Fault SEF/SGF Overcurrent Fault Supply Interrupt
picked up since last clear action
‘Reset Flags’ Protocol Command • Supply Reset (if enabled)
Set if a supply interrupt occurred after the most recent fault Set if switch trips to sectionalise
Generator Control Enable.
LBS IOEX Inputs
N00-665 R05
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Name
Bit
68 69 70 71 72 73 74 75 76 77 78 79
W Series
Modbus Protocol Technical Manual
IOEX Input 1 IOEX Input 2 IOEX Input 3 IOEX Input 4 IOEX Input 5 IOEX Input 6 IOEX Input 7 IOEX Input 8 IOEX Input 9 IOEX Input 10 IOEX Input 11 IOEX Input 12
Y Y Y Y Y Y Y Y Y Y Y Y
Set = ‘1’
Input Asserted Input Asserted Input Asserted Input Asserted Input Asserted Input Asserted Input Asserted Input Asserted Input Asserted Input Asserted Input Asserted Input Asserted
Cleared = ‘0’
Input Not Asserted Input Not Asserted Input Not Asserted Input Not Asserted Input Not Asserted Input Not Asserted Input Not Asserted Input Not Asserted Input Not Asserted Input Not Asserted Input Not Asserted Input Not Asserted
Comment
Returned State changes after 30ms debounce.
LBS Operator/Detection Flags
Name
Bit
80
Set = ‘1’
Phase Detection ON
Phase Detection OFF
Earth / Ground Detection ON
Earth / Ground Detection OFF
SEF/SGF Detection ON
SEF/SGF Detection OFF
Sectionaliser Auto ON
Sectionaliser Auto OFF
Cold load pickup is in Auto. This means that the cold load function is functioning and may, or may not, be affecting the threshold multiplier. This is indicated by the Cold Load not the Idle flag below. Cold Load is Idle or is turned off. This means that the threshold multiplier is not being affected by the cold load function. Live Load blocking ON
Cold Load pickup is OFF. This means that the cold load function is completely disabled.
84
Phase Detection Enabled Earth / Ground Detection Enabled SEF/SGF Detection Enabled Sectionaliser Auto Cold Load Auto
85
Cold Load Idle
86
Live Load blocking Automatic Automatic Detection Detection Group Selection ON Group Selection
81
82
83
87
N00-665 R05
Cleared = ‘0’
Comment
Cold load is NOT Idle. This means that the threshold multiplier is being raised by the cold load pickup function in order to pick up cold load. Live Load blocking OFF Automatic Detection Group Selection OFF
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Modbus Protocol Technical Manual
Name
Bit
88
Operator Close
89
IOEX Close
90
Protocol Close
91
External Close
92
Live Load Block Occurred
N00-665 R05
Set = ‘1’
Cleared = ‘0’
Cleared by one of the Set if the most recent close caused by local or following actions • 'Reset Flags and remote panel close Currents' protocol request. command. Set if the most recent • Controller Software close was caused by Reset (data is an IOEX close input. volatile). Set if the most recent • At the time of the close caused by a next Close. protocol close • Start of a new request. sequence. Set if any of the Cleared by one of the following caused the following actions: most recent close: • 'Reset Flags and • CCEM external Currents' protocol button on Ncommand. Series. • Controller Software Reset (data is • Mechanical action. The volatile). switchgear • At the time of the detected as next Trip. closed without a close request. • Electrical action (only available on the Advanced controller). Set if the most recent Cleared by one of the close request was following actions blocked due to a Live • 'Reset Flags and Load condition. Currents' protocol command. • Controller Software Reset (data is volatile). • At the time of the next Close.
Comment
The most recent close was caused by a local or remote panel close request. The most recent close was caused by an IOEX close input. The most recent close caused by a protocol close request.
The most recent close caused by an action external to the Controller.
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Modbus Protocol Technical Manual
Appendix D.2LBS Modbus - Analogue Inputs These are the analogue input status points that are available. They are stored in holding registers in the CAPM. Each holding register is 16 bits wide. The phase designation A, B, C is determined by the user, refer to the equipment manual for more information. Phase terminology is explained in section 2.3. W series: support is indicated in tables below by a ‘Y’. If indicated as ‘N’ then value is always 0.
Scaling Modbus analogue values are transmitted as a 16 bit value with an additional sign bit. Where the CAPM range of analogue values exceeds the range of a 16 bit number (-32768 to 32767) the values are scaled. All analogue values are scaled with 1 count = 1 Resolution/Units. In other words, 1 transmitted count = raw value ÷ resolution. For example: a phase voltage of 1000V will be transmitted as a count of 5050 (=1000 ÷ 2) The transmitted value must therefore be re-scaled at the master station before being displayed to the SCADA operator, logged, etc.
Modbus Implementation Request Code(s): 03 (Read Holding Registers) Reply Codes(s): 03 (Read Holding Registers) Error Code: 0x83 Exception Code: 01 (Illegal Function), 02 (Illegal Data Address), 03 (Illegal Data Value), 04 (Slave Device Failure)
LBS Analogue Inputs LBS Line Currents
Max
Resolution/ Units
A-Phase Current B-Phase Current C-Phase Current (Earth / Ground) Current
Min
0 1 2 3
Name
Holding Register
Note that these relate to user-designated phases rather than the physical bushings.
0 0 0 0
16000 16000 16000 16000
1A 1A 1A 1A
N00-665 R05
Max
Resolution/ Units
Ai Phase-(Earth / Ground) Voltage Bi Phase-(Earth / Ground) Voltage Ci Phase-(Earth / Ground) Voltage Ax Phase-(Earth / Ground) Voltage Bx Phase-(Earth / Ground) Voltage Cx Phase-(Earth / Ground) Voltage A-Bi Phase-Phase Voltage B-Ci Phase-Phase Voltage C-Ai Phase-Phase Voltage A-Bx Phase-Phase Voltage B-Cx Phase-Phase Voltage C-Ax Phase-Phase Voltage
Min
4 5 6 7 8 9 10 11 12 13 14 15
Name
Holding Register
LBS Voltage Measurements Voltages are provided either for all 6 Terminals or for only 3 Terminals depending upon the model of LBS.
0 0 0 0 0 0 0 0 0 0 0 0
40000 40000 40000 40000 40000 40000 40000 40000 40000 40000 40000 40000
2V 2V 2V 2V 2V 2V 2V 2V 2V 2V 2V 2V
Page 55
Modbus Protocol Technical Manual 16 Frequency Note 2 45 65 Note 1. Not available in standard U-series ACR without external CVTs. Value always zero. 2. Only available on CAPM5/6. Return 0 if unavailable.
0.1Hz
Min
Max
Resolution/ Units
System kW This can be a signed quantity that indicates direction of power flow, or an unsigned quantity that is always positive regardless of the direction of the power flow. This is determined by the controller configuration System Apparent Power System Reactive Power Unsigned quantity which is always positive irrespective of direction of power flow System Power Factor Note 1 This is calculated from Real and Apparent power.
-131 MW
131MW
4 kW
0 0
131MVA 131MVAR
4 kVA 4 kVAR
0.00
1.00
0.01
Holding Register
Name
LBS System Power
17
18 19
20
Note 1. All data is transmitted as integers. Power factor has an extra built in scale factor of 100 ie. range 0.00 to 1.00 with resolution 0.01 is transmitted as 0 to 100 with resolution 1. LBS SF6 Pressure If the LBS Memory Data is not valid then the pressure is zeroed.
Max
Resolution/ Units
Gas Pressure, kPag. Gas Pressure, PSI
Min
21 22
Name
Holding Register
Gas Pressure is not supported on U-series, value will be zero.
-100 -14
300 44
1 kPaG 1 PSI
N00-665 R05
Min
Max
Resolution/U nits
23 24 25 26 27
Name
Holding Register
LBS Switchgear and Controller Details
Reserved I Contact Life Note 1 II Contact Life Note 1 III Contact Life Note 1 Operations Counter Note 2
0.0 0.0 0.0 0
100.0 100.0 100.0 4095
0.01 % 0.01 % 0.01 % 1 Operation
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Modbus Protocol Technical Manual 28
Phase Designation 0 = A-B-C 1 = A-C-B 2 = B-A-C 3 = B-C-A 4 = C-A-B 5 = C-B-A The order A-B-C indicates the mapping between phases (A, B, C) and bushing (I-II-III). For example designation 2 maps B phase to I, A phase to II and C phase to III. The phase designation is set up on the controller so that the data in the database matches the HV terminal wiring.
0
5
1
Note 1. All data is transmitted as integers. Contact life has an extra built in scale factor of 10 ie range of 0.0% to 100.0% with resolution 0.1% is transmitted as 0 to 1000 with resolution 1. 2. This value is zeroed when LBS Memory Valid is not valid. LBS Fault Detection Data
32 33 34
N00-665 R05
Resolution/ Units
31
Max
30
Min
29
Name
Holding Register
These analogue points record data about the fault detection including maximum fault currents. These are derived from the max current events, which are seen in the Operator Control Panel event record and record the current for each phase and for earth/ground. For any one fault more than one fault current can be set. For example a Phase/Phase fault might set an A-Phase current and a BPhase current. Other data recorded includes the supply interrupt count and the Detection Group which was active at the time of the fault detection. Fault Detection Data is cleared to zero by the following actions :• “Reset Fault Current” remote control command defined below • Any Operator Close or Trip action • New fault detected This data is volatile, that is they are zeroed on controller software reset. If there is more than one protocol running simultaneously in the controller this data is replicated between the protocols so that each master station can clear its data independently from the others.
Active Detection Group The number of the Detection Group active during the sequence. Supply Interrupt Count The number of Supply Interrupts Counted. Most Recent A-Phase Fault Written on a Max Current event for A Phase Most Recent B-Phase Fault Written on a Max Current event for B Phase Most Recent C-Phase Fault Written on a Max Current event for C Phase Most Recent Earth/Ground Fault Current - Written on an E-Max event. This includes SEF/SGF Fault currents.
0
9
1
1
10
1
0
16000
1A
0
16000
1A
0
16000
1A
0
16000
1A
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Modbus Protocol Technical Manual
Min
Max
Resolution/ Units
36
Cold Load Value is zero when Cold Load is Idle or OFF. When Cold Load is not idle this shows the operational cold load time, i.e. the current time being used to calculate the operational cold load threshold multiplier. Active Detection Group 0 = Group A 1 = Group B … 9 = Group J
W Series
35
Name
Holding Register
LBS Detection State
Y
0
480
Mins
Y
0
9
1
LBS Fault Counters
W Series
Min
Max
Resolution/ Units
37
A Phase O/C Fault Counter
Y
0
99
1
38
B Phase O/C Fault Counter
N
0
99
1
39
C Phase O/C Fault Counter
N
0
99
1
40
Earth O/C Fault Counter
N
0
99
1
41
SEF O/C Fault Counter
N
0
99
1
42
Reserved
Holding Register
Name
These counters are cleared by the ‘reset flags’ command. These counters do not increment when switchgear is an ACR. When the counters reach there max value, they do not roll-over, instead they ‘stick’ at this max value.
Min
Max
Resolution/ Units
A Phase Load Current Prior to Last Pickup
W Series
43
Name
Holding Register
LBS Load Currents
Y
0
16000
1A
N
0
16000
1A
N
0
16000
1A
Note 4
44
B Phase Load Current Prior to Last Pickup Note 4
45
C Phase Load Current Prior to Last Pickup Note 4
N00-665 R05
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Modbus Protocol Technical Manual
47
•
0 - GenCtrl OFF.
•
1 - Switch Closed.
•
2 - Line Dead Check.
•
3 - Wait Switch Open.
•
4 - Wait Generator Live.
•
5 - Generator Running.
•
6 - Line Live Check.
•
7 - Wait Generator OFF.
•
8 - Wait Switch Closed.
Max
Resolution/ Units
Y
Min
Generator Control Status
W Series
46
Name
Holding Register
LBS Automation Data
0
8
N/A
Reserved
Time of Maximum Average Current This is the end time of the maximum average demand current of all relevant phases for the previous full day ending at midnight. The time is in minutes since midnight. Average Demand Current This is the maximum average demand current of all relevant phases for the previous full day ending at midnight. Average Sampling Period This was the average sampling period at the end of the previous day (either the Average Demand or Configured History period).
50
51
Resolution/ Units
49
Max
Reserved
Min
48
W Series
Name
Holding Register
LBS Daily Data
Y
1
1440
Mins
Y
0
16000
Amps
Y
1
1440
Mins
LBS Accumulator Data These points use two holding registers. They are signed 32 bit numbers (-2147483648 to 2147483647). The first register contains the least significant bits.
N00-665 R05
Page 59
Max
Resolution/ Units
KWH Cumulative Note 1 Source Outages Note 2 Source Outage Duration Note 2 Load Outages Note 2 Load Outage Duration Note 2 Reserved KWH Cumulative Forward The accumulated kWH in the forward direction (ie Source to Load) at the last freeze and reset operation. This data is volatile, and is zeroed on controller software reset. If more than one protocol is running simultaneously in the controller, this data is replicated between the protocols so each master station can clear its data independently from the others.
Min
Name
52 54 56 58 60 62 64
W Series
Holding Register
Modbus Protocol Technical Manual
Y Y Y Y Y
0 0 0 0 0
2147483647 2147483647 2147483647 2147483647 2147483647
1 KWH 1 Count 1 Seconds 1 Count 1 Second
Y
0
2147483647
1 KWH
Y
0
2147483647
1 KWH
Note 3
66
KWH Cumulative Reverse The accumulated kWH in the reverse direction (ie Load to Source) at the last freeze and reset operation. This data is volatile, and is zeroed on controller software reset. If more than one protocol is running simultaneously in the controller, this data is replicated between the protocols so each master station can clear its data independently from the others. Note 3
Note: 1. This accumulates the total kWH flowing through the ACR. If the controller is set for Power Flow Unidirectional then the cumulative total increases irrespective of the direction of power flow to show the total power that has passed through the device. If the controller is set to Bi-Directional power flow then the cumulative total can increase or decrease reflecting the nett power flow. 2. The power flow direction (source/load designation) is determined by the user. Refer to Power Flow Direction Binary Input for status and Binary Output for control. 3. Use relevant Digital Control (55 or 56) to collect data. 4. Average taken from either the Demand or Configured History period.
N00-665 R05
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Modbus Protocol Technical Manual
Appendix D.3 LBS Modbus - Digital Control Both the "force coil ON" and "force coil OFF" are valid.
Modbus Implementation Request Code(s): 05 (Force Single Coil) Reply Codes(s): 05 (Force Single Coil) Error Code: 0x85 Exception Code: 01 (Illegal Function), 02 (Illegal Data Address), 03 (Illegal Data Value), 04 (Slave Device Failure)
Coil
Name
0
Work Tag
1 2 3 4
Reserved Reserved Reserved LBS Control
5
Reset Fault Flags and Currents
6 7
On = ‘1’
Off = ‘0’
Applies Work Tag. Rejected if: • CAPM is in LOCAL Mode
Removes Work Tag. Rejected if: • CAPM is in LOCAL Mode.
Trip Rejected if: • Trip coil is isolated • SF6 gas pressure is low (if applicable) AND low gas lockout is ON • Switchgear data invalid
Note 1
Close Rejected if: • Close coil is isolated • CAPM is in LOCAL control mode • SF6 gas pressure is low (if applicable) AND low gas lockout is ON • Work Tag is applied • Switchgear data invalid • Mechanically interlocked (if applicable) • Live load blocking ON AND any load side terminal live • Trip and/or Close capacitors are charging or failed Resets all Analog Fault Currents to zero and clears all binary Detection trip flags
Reserved Power Flow Direction
Source X, Load I
Source I, Load X
Set cold load time to its maximum value. This means that the cold load threshold current will be set to its maximum value Rejected if: • Cold load support is OFF
Set cold load time to zero. This means that the threshold multiplier will not be affected by the cold load function. Rejected if: • Cold load support is OFF
Comment
No Action
Note 1
8 9 10 11
Reserved Reserved Reserved Cold Load Idle/Max
12
Reserved
N00-665 R05
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Modbus Protocol Technical Manual Coil
Name
13 14 15 16
Reserved Reserved Live Load Blocking Freeze/Reset
17
Dummy Circuit Breaker
18
Automatic Detection Group Selection
19 20
Reserved Supply Outage Measurement Control Supply Outage Measurement Reset Reserved Sectionaliser Auto
21
22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44
Reserved Reserved Reserved Reserved Detection Group A Detection Group B Detection Group C Detection Group D Detection Group E Detection Group F Detection Group G Detection Group H Detection Group I Detection Group J Reserved Reserved Reserved Reserved Protocol IOEX Control 1 Protocol IOEX Control 2 Protocol IOEX Control 3
N00-665 R05
On = ‘1’
Live Load blocking ON Freezes the KWH Cumulative accumulator value ready for transmission and resets the running count back to zero DCB Close
Off = ‘0’
Comment
Live Load blocking OFF
DCB Trip
The dummy circuit breaker is an internal point useful for SCADA system testing.
ADGS ON Rejected if: • ADGS ON is Not Allowed • Loop Automation ON
ADGS OFF
Supply Outage Measurement ON
Supply Outage Measurement OFF
Resets all Supply Outage counters values.
No Action
Turn Sectionalising ON
Turn Sectionalising OFF.
Group A ON Group B ON Group C ON Group D ON Group E ON Group F ON Group G ON Group H ON Group I ON Group J ON
No Action No Action No Action No Action No Action No Action No Action No Action No Action No Action
Only one group can be active at any time. Activating any of these protection groups will automatically reset the previous setting.
Sets an IOEX configurable point.
Clears an IOEX configurable point.
Note: The only valid Control Type is ‘Sustained’.
Note: The only valid Control Type is ‘Sustained’.
Sets or clears an IOEXconfigurable point, for Protocol Controls.
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Modbus Protocol Technical Manual Coil 45
Name Protocol IOEX Control 4 Protocol IOEX Control 5 Protocol IOEX Control 6 Protocol IOEX Control 7 Protocol IOEX Control 8 Reserved Reserved Reserved Generator Control
46 47 48 49 50 51 52 53
54 55
Reserved Freeze/Reset kWH Accum Fwd
56
Freeze/Reset kWH Accum Rev
On = ‘1’
Off = ‘0’
Comment
Turn Generator Control on. Rejected if: • Generator Control is not available. • Loop Automation is available. • Auto-changeover is available.
Turn Generator Control Off.
Generator Control enabled.
kWH Cumulative Forward Accumulator freeze/reset operation.
.
Freezes the kWH Cumulative Forward accumulator value ready for transmission and resets the running count back to zero Freezes the kWH Cumulative Reverse accumulator value ready for transmission and resets the running count back to zero.
kWH Cumulative Reverse Accumulator freeze/reset operation.
Note: 1 Changing the Source/Load direction affects the following aspects of the operation of the controller: • • • • •
Whether the source or load corresponds to I side or X side on the voltage measurements Which side is the source or load for the Live Load Blocking Which side is the source or load for the Directional Blocking Which direction is positive power flow for the System Power measured value Power Flow Direction Binary Input status
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Modbus Protocol Technical Manual
Appendix D.4 LBS Modbus - Analogue Control These are the registers able to be preset by the controller. If W series is indicated as 'Y' below then register is supported other wise no action is taken.
Modbus Implementation Request Code(s): 06 (Preset Single Register) Reply Codes(s): 06 (Preset Single Register) Error Code: 0x86 Exception Code: 01 (Illegal Function), 02 (Illegal Data Address), 03 (Illegal Data Value), 04 (Slave Device Failure)
N00-665 R05
Max
Units
Reserved Detection Group selection 0 = Group A 1= Group B … 9 = Group J
Min
0 1
Name
Holding Register
LBS Analog Controls
0
9
N/A
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Modbus Protocol Technical Manual
Appendix E
CAPM2 Modbus Point Map
This point map emulates the CAPM2 point map as defined in N00-424.pdf (ACR Only).
Appendix E.1
Data Available over Modbus
This data is read using functions 3 for analog and 2 for digital only. Zeros are returned for all addresses scanned outside of the ranges defined in the following tables. Description Units Minimum Maximum Holding Register Value Value 0
U phase current
1 2 3 4 5 6 7 8 9 10 11
V phase current Amps x 1 0 800 Amps x 1 0 800 W phase current Earth current Amps x 1 0 800 U phase/earth voltage Volts x 1 0 25,000 V phase/earth voltage Volts x 1 0 25,000 W phase/earth voltage Volts x 1 0 25,000 System Apparent Power kVA x 1 0 30,000 System Real Power (signed 2’s compliment) kW x 1 -30,000 30,000 System Reactive Power kVAR x 1 0 30,000 Digital Status 1 (see below) Digital Status 2 (see below) Note: Do not request any holding registers beyond this Digital Status 2. It will result in an exception.
Amps x 1
0
800
Digital status information is as follows. Bit offset of zero implies the least significant bit in the word. Digital Status Word 1 Bit Description Set Condition Clear Condition 0
Closed Signal
Switchgear is closed
1
Open Signal
Switchgear is open
2
Trip Isolate
3
Close Isolate
4
Operational Status
5
Auto Reclose
The trip isolate switch on the operator control panel is in the ISOLATE position The close isolate switch on the operator control panel is in the ISOLATE position Remote control of the ACR is allowed. This means that Modbus function 5 will be enabled. This only occurs when controller is in Remote Mode Auto Reclose mode is set
N00-665 R05
Switchgear is open or disconnected Switchgear is closed or disconnected The trip isolate switch on the operator control panel is in the CONNECTED position The close isolate switch on the operator control panel is in the CONNECTED position Remote control of ACR is not allowed. This means that Modbus function 5 will be disabled and will return a NAK. This occurs when the controller is in Local or Do Not Operate Modes. One shot to lockout mode is set.
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Modbus Protocol Technical Manual Bit
Description
Digital Status Word 1 Set Condition
Clear Condition
6
Cold Load Pickup
Cold load pickup is ON
Cold load pickup is OFF
7
Earth Fault
8
SEF
Earth fault protection is ON SEF protection is ON
Earth fault protection is OFF SEF protection is OFF
9 10
Auxiliary Supply Auxiliary supply is Failed Battery status is Failed Battery
11
SF6 Pressure
12
Phase Prot Trip
13
Earth Prot Trip
14
SEF Prot Trip
15
Lockout
N00-665 R05
Auxiliary supply is Normal Battery status is Normal
SF6 Pressure is Low or SF6 Pressure is Normal not available Phase Protection Tripped Recloser Closed or trip the ACR was from some other source. Earth Fault Protection Recloser Closed or trip Tripped the ACR was from some other source. Sensitive Earth Fault Recloser Closed or trip Protection Tripped the was from some other ACR source. The ACR is open and in The ACR not in lockout. It lockout so that it will not is either closed or is in an close again auto-reclose sequence. automatically. It must be closed by either local or remote control.
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Modbus Protocol Technical Manual
Bit 0
Description
Digital Status Word 2 Set Condition
Clear Condition
Toggle
This bit toggles on and off every 50 seconds (ie. Period 100 seconds).
1 2
System Healthy Protection A
See Note 1 Protection Set A Selected
3
Protection B
Protection Set B Selected
Protection Set A Not Selected Protection Set B Not Selected
Note 1 - System healthy is set only when all of the following conditions are met. • Electronics OK • Contact Wear >=20% on all three phases. • Aux supply Normal • Battery Normal • Trip and Close isolate switches in the connected position. • Gas pressure normal. Also Note: If neither protection set A or B are set, then protection has been turned OFF.
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Modbus Protocol Technical Manual
Appendix E.2
Controls Available over Modbus
The following controls are supported by function 5 (force single coil). Note that in this implementation: • Only the “force coil ON” command is valid. The “force coil OFF” command is rejected. • The coils are addressed as shown in the table below. • Controls are only supported when the controller is in the Remote mode. If the controller is in the Local or Do Not Operate mode then the response is 07 (NAK). • A correctly formatted control is always replied to. However this does not mean that the action has been correctly carried out, the master must make this check using the read register command. For example, if a “close” command is transmitted but the switchgear either fails to close or the close is defeated by the close isolate switch being in the isolated position, then control will still be acknowledged to the master. Coil 0 1 2 3 4 5 6 7 8 9 10 11
Action Close ACR Trip ACR Auto-Reclose ON One shot to lockout ON Cold load pickup ON Cold load pickup OFF Earth fault protection ON Earth fault protection and SEF protection OFF SEF protection ON and Earth Fault Protection ON* SEF protection OFF Select Protection Set A (Turns Protection ON) Select Protection Set B (Turns Protection ON)
*This control has no effect when SEF set to “Not Available” on protection settings page
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Appendix F
CAPM2 N00-321 and N00-360 Modbus Point Map
This point map emulates the CAPM2 point map as defined in N00-321.pdf and N00-360.pdf documents (ACR Only).
Appendix F.1
Data Available over Modbus
This data is read using functions 3 for analog and 2 for digital only. Zeros are returned for all addresses scanned outside of the ranges defined in the following tables. Description Units Minimum Maximum Holding Register Value Value 0
U phase current
Amps x 1
0
800
1 2 3 4
V phase current W phase current Earth current U phase/earth voltage
Amps x 1 Amps x 1 Amps x 1 Volts x 1
0 0 0 0
5
V phase/earth voltage
Volts x 1
0
6
W phase/earth voltage
Volts x 1
0
800 800 800 25,000 (note 1) 25,000 (note 1) 25,000 (note 1) 30,000 30,000 30,000
7 8 9 10 11
System Apparent Power kVA x 1 0 System Real Power (signed 2’s compliment) kW x 1 -30,000 System Reactive Power kVAR x 1 0 Digital Status 1 (see below) Digital Status 2 (see below) Note: Do not request any holding registers beyond this Digital Status 2. It will result in an exception. Note 1: The maximum specified for N00-321 is 15000. The value returned is the actual line to earth voltage as measured and is not limited to a maximum other than the register maximum capacity. Digital status information is as follows. Bit offset of zero implies the least significant bit in the word. Digital Status Word 1 Bit Description Set Condition Clear Condition 0
Closed Signal
Switchgear is closed
1
Open Signal
Switchgear is open
2
Trip Isolate
3
Close Isolate
4
Operational Status
The trip isolate switch on the operator control panel is in the ISOLATE position The close isolate switch on the operator control panel is in the ISOLATE position Remote control of the ACR is allowed. This means that Modbus function 5 will be
N00-665 R05
Switchgear is open or disconnected Switchgear is closed or disconnected The trip isolate switch on the operator control panel is in the CONNECTED position The close isolate switch on the operator control panel is in the CONNECTED position Remote control of ACR is not allowed. This means that Modbus function 5 will be disabled and will Page 69
Modbus Protocol Technical Manual Bit
Description
Digital Status Word 1 Set Condition
5
Auto Reclose
6
Cold Load Pickup
Cold load pickup is ON
return a NAK. This occurs when the controller is in Local or Do Not Operate Modes. One shot to lockout mode is set. Cold load pickup is OFF
7
Earth Fault
8
SEF
Earth fault protection is ON SEF protection is ON
Earth fault protection is OFF SEF protection is OFF
9 10
Auxiliary Supply Auxiliary supply is Failed Battery status is Failed Battery
11
SF6 Pressure
12
Phase Prot Trip
13
Earth Prot Trip
14
SEF Prot Trip
15
Lockout
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enabled. This only occurs when controller is in Remote Mode Auto Reclose mode is set
Clear Condition
Auxiliary supply is Normal Battery status is Normal
SF6 Pressure is Low or SF6 Pressure is Normal not available Phase Protection Tripped Recloser Closed or trip the ACR was from some other source. Earth Fault Protection Recloser Closed or trip Tripped the ACR was from some other source. Sensitive Earth Fault Recloser Closed or trip Protection Tripped the was from some other ACR source. The ACR is open and in The ACR not in lockout. It lockout so that it will not is either closed or is in an close again auto-reclose sequence. automatically. It must be closed by either local or remote control.
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Modbus Protocol Technical Manual
Bit 0 1 2
Description
Digital Status Word 2 Set Condition
Clear Condition
Toggle
This bit toggles on and off every 50 seconds (ie. Period 100 seconds).
System Healthy Generator Control
See Note 1 Generator Control is ON
Generator Control is OFF
Note 1 - System healthy is set only when all of the following conditions are met. • Electronics OK • Contact Wear >=20% on all three phases. • Aux supply Normal • Battery Normal • Trip and Close isolate switches in the connected position. • Gas pressure normal. Also Note: If neither protection set A or B are set, then protection has been turned OFF.
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Modbus Protocol Technical Manual
Appendix F.2
Controls Available over Modbus
The following controls are supported by function 5 (force single coil). Note that in this implementation: • Only the “force coil ON” command is valid. The “force coil OFF” command is rejected. • The coils are addressed as shown in the table below. • Controls are only supported when the controller is in the Remote mode. If the controller is in the Local or Do Not Operate mode then the response is 07 (NAK). • A correctly formatted control is always replied to. However this does not mean that the action has been correctly carried out, the master must make this check using the read register command. For example, if a “close” command is transmitted but the switchgear either fails to close or the close is defeated by the close isolate switch being in the isolated position, then control will still be acknowledged to the master. Coil 0 1 2 3 4 5 6 7 8 9 10 11 12
Action Close ACR Trip ACR Auto-Reclose ON One shot to lockout ON Cold load pickup ON Cold load pickup OFF Earth fault protection ON Earth fault protection and SEF protection OFF SEF protection ON and Earth Fault Protection ON* SEF protection OFF Reset Fault Flags (resets all fault flags) Generator Control ON Generator Control OFF
*This control has no effect when SEF set to “Not Available” on protection settings page
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