09 Lesson 04
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AP Service Learning
EP Basic
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Today Menu: 1. CDVR 2. Introduction to Control Panels 3. System Operation/Testing and Adjusting • EMCP I (SENR3535 via SIS) • EMCP II+ (RENR1200 via SIS) • EMCP III (RENR7902 via SIS) 4. TMI web
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Caterpillar Digital Voltage Regulator (CDVR) Introduction and Specifications Prepared by Service Training https://psmktg.cat.com/srvtrng/
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Foreword This presentation was prepared by Caterpillar Service Training to be a training overview of the CDVR for Caterpillar generator set service personnel. This presentation provides comparisons to the previous design, DVR, and includes information pertaining to the removal of a DVR and replacement with a new CDVR. As always, the proper service information for the regulators in SIS should be used for the latest specific details for operation, adjustments, programming and troubleshooting.
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Compatibility – Products Affected The following product’s standard configuration or available options will be affected. The change will affect PMG generators that have the CDVR as standard or option. Generators that do not have an option for the DVR will not be affected.
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Compatibility – Products Affected Con’t. The following product’s standard configuration or available options will be affected. The change will affect PMG generators that have the CDVR as standard or option. Generators that do not have an option for the DVR will not be affected.
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Other CDVR Production Information •
The CDVR will replace DVR for low and medium voltage generators and will also replace KCR 760 & KCR 65-12B for high voltage generators. A follow-up announcement will be sent that details product changeover on all affected products. The CDVR will be used in all EPG products currently available with a standard or optional CDVR and with high voltage applications where analog regulators are standard with current product. 3500 SE Generators will be shipped with a VR-6 3500 PM Generators will be shipped with a CDVR
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CDVR started production January 2004
January 2004 Transition Digital Voltage Regulator or “DVR”
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Caterpillar Digital Voltage Regulator or “CDVR”
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DVR from 1994-2003 • • • • •
•
Previous design pictured Called the “DVR” or “Digital Voltage Regulator” Manufactured by MagnetekCentury Will be discontinued Replaced with the new “Caterpillar Digital Voltage Regulator” or “CDVR” Six part numbers were used to accommodate SE & PM, 120, 240, and 480 VAC sensing requirements
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Caterpillar Digital Voltage Regulator • •
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New design pictured Called the “Caterpillar Digital Voltage Regulator” or abbreviated “CDVR” Made by Basler Electric Will be used on Caterpillar generator sets and will replace the “DVR” January 2004 Production Only One Part Number is needed for all applications KVAR/PF control included
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CDVR Publications • Available on Service Information System (SIS) – RENR7941
Specifications System Operation Testing & Adjusting Guide – “CDVR PC Software” is available on SISweb in the download section or on the monthly SIS subscription Flash File CD ROM.
• Available on Electronic Media Center – LEHE3225 – LEXE3226
Specifications Sheet November 2003 Product News
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Part Numbers • Cat Digital Voltage Regulator (CDVR) - 235-5725 • Connector Part Numbers – – – –
P6 plug: 234-1856, P6 seal 246-7013. P9 plug: 234-1857, P9 seal 246-7014. P12 plug 234-1858, P12 seal 246-7015. P6, P9 and P12 Pins : 244-0452.
• Planned part number releases: – Crimping tool: 239-5260. – Extraction tool: 246-8636.
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A Brief Look… • • • • • • • •
There is no touch pad or display for programming PC programming only PC software is on SIS RS-232 PC connection No screw terminals 3 Molex connectors Bolt pattern like the DVR Fault LED Indicator
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Why a new Caterpillar Regulator? •
DVR was designed in early 1990’s… – – – –
•
1990’s technology has fewer features Internal components are becoming obsolete DVR designed for fewer applications Not cost effective to improve present design
The CDVR has improved transient performance, added standard features such as VAR & PF control, and expanded flexibility for optimizing performance to individual customer applications.
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Features • Microprocessor control of three standard modes – Automatic Voltage Regulation (AVR) – Power Factor Regulation (PF) – Reactive Power Regulation (VAR)
• Programmable stability settings • Soft start control with an adjustable time setting in AVR control mode • Dual Slope Under Frequency (volts/Hertz) regulation
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Features • Three-phase or single-phase generator voltage (RMS) sensing/regulation in AVR mode • Single-phase generator current sensing for regulation purposes • Field current and field voltage sensing • Five contact sensing inputs for system interface • One common LED for visual indication of Alarm and Shutdown fault conditions • Ten generator protective functions
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Features • Fault Shutdown Driver and Alarm Output Driver for indication of Alarm and Shutdown fault conditions • Generator paralleling with reactive droop compensation and reactive differential compensation • Line drop compensation • Remote communication interface via CAN 2.0B or RS-232 • UL 508 Recognized and CE certified
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Modes of Operation Defined •Automatic Voltage Regulation (AVR) •Reactive Power (VAR) Regulation •Power Factor (PF) Regulation
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Automatic Voltage Regulation Mode •
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AVR mode regulates the RMS generator output voltage. The regulator senses the generator output voltage through the sensing leads and then adjusts the dc output excitation current to the generator exciter field. This excitation current maintains the generator terminal voltage at the regulation setpoint. This is the basic function of any voltage regulator on a standalone generator set AVR mode is the default operating mode and can be disabled by a switch input or the J4 port with CDVR PC Software.
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VAR Control Mode •
• •
Reactive or VAR mode regulates “Volt-Amps Reactive” when paralleling with an infinite bus. The CDVR calculates generator VARs from output voltage and droop CT current quantities and adjusts the excitation current to maintain VARs at the programmed setpoint. VAR mode and PF mode are mutually exclusive modes that both work in conjunction with AVR mode. VAR mode is enabled by a switch input and the CDVR PC Software. VAR is adjustable from 100 percent absorb to 100 percent generate. Typically used when paralleled with utility.
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Power Factor Control Mode •
PF mode regulates Power Factor when paralleling with an infinite bus. The CDVR calculates PF using the sensed output voltage and current and then adjusts the dc excitation current to maintain PF at the programmed setpoint. Again, VAR mode and Power Factor mode are mutually exclusive modes that both work in conjunction with AVR mode. PF mode is enabled by a switch input and the J4 port with CDVR PC Software. PF setpoint is adjustable from 0.6 –1.0 lag and 0.6 – 1.0 lead. Typically used when paralleled with utility.
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480
Minimum Frequency Point (20-40Hz)
Generator Output Voltage Decreasing Slope 1 (0-10 V/Hz) Decreasing Slope 2 (0-10 V/Hz) 5 Hz (Not Adjustable)
VAC
Min. Voltage Setpoint (50-100%) Knee Frequency (45-65Hz)
0 0Hz
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55 60Hz
Regulation Characteristic. Below the Knee Frequency, the generator voltage follows a decreasing slope based on generator frequency. When generator frequency is between the Knee Frequency and Knee Frequency minus 5 hertz, voltage follows Slope 1. When generator frequency is between the Knee Frequency minus 5 hertz and the Underfrequency Point, voltage follows Slope 2 down to the Minimum Voltage Setpoint. When generator frequency is below the Minimum Frequency Point, excitation is removed. Programming Decreasing Slope 2 is optional. Service Excellence & Relentless Execution
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10 CDVR Protective Functions • • • • • • • • • •
Generator Overvoltage Generator Undervoltage Loss of Excitation Instantaneous Field Overcurrent Over Excitation Loss of Sensing Voltage Diode Fault Monitor Internal CDVR Processor Watchdog Failure Internal CDVR Memory Failure Fault Reset Switch Closed Too Long
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General Specifications • •
• • •
Voltage Regulation: – ± 0.25% from no load to full load with < 30% THD Temperature Drift: – Less than ±1% for a 40°C (72°F) change over the ambient operating temperature range. Regulator response time: – Maximum of 10 milliseconds. Variable Sense Range: – 90 to 600 volts. Control Power: – 24Vdc Supply (18 to 30Vdc, 5VA)
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General Specifications • Regulator Filtering: – THF 3% per IEC34-1 – TIF of 50 NEMA MG1-22.43
• Harmonic Tolerance: – 0.5% Voltage regulation with up to 40% THD
• Power Dissipation: – 55W Maximum
• Weight: – 1.47 kg (3.24 lbs.)
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General Specifications • Regulator sensing: – True RMS 3-phase sensing is standard. Single phase sensing is available.
• Configurable Volts/Hz Regulation Characteristic – Two slope ranges adjustable from 0 to 10 V/Hz. See Regulation Characteristic Illustrations.
• Fine voltage adjust range: – ± 15% Maximum of regulator sensing voltage.
• Regulator voltage gain (line loss compensation) – Adjustable from 0 to 10%.
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General Specifications • Reactive droop adjustment: – Adjustable from 0 to 10%.
• Fault detection and identification: – Diagnostics identify operation outside of programmed limits. Specific fault information is available after the unit has been powered down.
• Over Excitation protection: – Shuts off generator output when excitation current exceeds normal operating currents for 10 seconds or instantaneous shut-off if output current exceeds approximately 28 Amperes.
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General Specifications • Voltage Regulation Rating – 120 to 15000 VAC
• Generator Excitation Type – PM – Permanent Magnet – SE – Self Excited – AREP – Auxiliary Winding Capable
• AC Input Power – Three phase, 80 to 264 VAC, 50 to 400 Hz, 1150VA – Single phase, 100 to 280 VAC, 50 to 400Hz, 1900 VA
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General Specifications •
Output Power Maximum Continuous: – 12 Amps DC @ 63VDC – 10 Amps DC @ 125 VDC
•
Output Power Maximum Forcing (10 seconds): – 25 Amps DC @ 125 VDC – 20 Amps DC @ 250 VDC
•
AC Sensing Voltage: – True RMS three phase or single phase, 90 to 600 VAC, maximum 1 VA per phase burden.
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General Specifications • Reactive Voltage Droop circuit: • 5 Amp Current Transformer, maximum 1 VA burden – Regulator has internal CT burden resistor
• Exciter Field Resistance Range – 3 Ohms minimum, 39 ohms maximum
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Environmental Specifications • Operating Temperature: – -40°C to 70°C (-40°F to 158°F)
• Storage Temperature: – -40°C to 85°C (-40°F to 185°F)
• Relative Humidity: – 95% non-condensing 30°C to 60°C
• Salt Fog: – 5% for 48 hours at 38°C (100°F) at 115% of the nominal operating voltage
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Environmental Specifications • Vibration: – 4.5G (peak) 18-2000Hz in 3 perpendicular planes
• Shock: – Withstands up to 20 g’s in three mutually perpendicular planes.
• Certifications: – – – –
CE Approved UL 508 Recognized CSA Listed Meets MIL STD 461C
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Caterpillar Digital Voltage Regulator (CDVR) Wiring Connections Prepared by Service Training https://psmktg.cat.com/srvtrng/
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Regulator Connectors and LED (1) (2) (3) (4) (5)
6-pin connector “P6” LED Indicator 12-pin connector “P12” 9-pin connector “P9” 9-pin D-sub Connector “J4”
Note: Items 1, 3 & 4 are Molex brand Connector plugs
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P6 connector pin numbering
View as looking at P6 on the regulator plug Service Excellence & Relentless Execution
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P6 Wiring •
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Pins 1, 2 & 3: AC power inputs from either SE or PM stator winding Pins 4 (-) & 5 (+): DC field voltage output to the generator exciter stator Pin 6 should be hard-wired to earth ground with at least a 16AWG copper wire
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P9 connector pin numbering
View as looking at P9 on the regulator plug Service Excellence & Relentless Execution
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P9 Wiring • •
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Pins 1, 2 & 3: CANbus data link connections Pins 4, 5 & 6: Raise and Lower connections for voltage level adjustments in AVR mode, KVAR level in KVAR mode and P.F. level adjustment in P.F. Mode Pin 7: Excitation Disable of field voltage to exciter stator Pin 8: Fault Shutdown Reset Pin 9: VAR/PF mode enable
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P12 connector pin numbering
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P12 Wiring • • • • • • •
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Pins 1 & 2: droop CT input Pins 3 & 6: +/-10 DCV in Pin 4: Alarm output Pin 5: Fault SD output Pins 7 & 8: 24VDC Input Pin 9: Alarm and Fault Shutdown Supply Driver Pins 10, 11, & 12: Generator AC voltage sensing phases “C”, “B”, and “A” respectively.
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J4 connector pin numbering
The digital voltage regulator has the capability to communicate with a personal computer or programmable logic controller. The J4 connector of the digital voltage regulator provides an RS-232 port necessary for communication. Pin locations and numbers are shown above.
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J4 RS-232 Wiring The J4 RS-232 port is a 9-pin connector including a pins for Receive, Transmit, common Signal Ground. The common signal ground is NOT a bonding ground and should not be grounded to the case or frame. It is to be connected to the RS232 device Signal Ground connection point. Cable length should be limited to 15 m (50 ft) maximum for the RS-232 signal wiring Part 1U-9494 – RS232 cable.
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Example PMG Diagram
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Example PMG Diagram
Required only for Var/PF control. Var/PF permitted with 52a closed, inactive with 52a open.
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Example PMG Diagram
Excitation is disabled when closed, enabled when open.
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Example PMG Diagram
Momentary closure resets any shutdown fault.
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Example PMG Diagram
S1 (SPDT, spring-return to center-off position) adjusts regulator setpoint or KVAR/PF setpoint when in KVAR/PF mode
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Example PMG Diagram
Normally-off, turns on for user alarm or trip.
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Example PMG Diagram
Analog input voltage between -10 and +10 Vdc provides adjustment of operating voltage.
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Example PMG Diagram
External fuses should be sized to match the PMG and protect the field. Maximum fuse size should be limited to Bussmann type KTK-12.
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Example PMG Diagram
Three-phase PMG is shown. For singlephase PMG, omit P6-3 connection.
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Example PMG Diagram
Sensing potential transformer is required if line voltage exceeds 600 Vac.
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Example PMG Diagram
Items No.10 are not supplied by Caterpillar.
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Example PMG Diagram
When generator rotation is ACB, the connections shown for CTB should be reversed.
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EP Basic A 9
GEN
B
CTB
10
AREP Wiring Example
C
+
52
Auxiliary Windings Shunt Series X1
P6-4 (F2,-)
P6-5 (F1,+)
FIELD OUTPUT
X2
Z1
9
8
7
9
P6-1
P6-2
9
Z2
P6-3
P12-1
P12-2
24 Vdc
+
P12-10 P12-11 P12-12
CURRENT SENSING
POWER INPUT
VOLTAGE SENSING
P12-8 (+)
_
P12-7 (-)
24 Vdc CONTROL POWER
P6-6
GROUND
CAT DVR-II VAR/PF CONTROL
EXCITATION DISABLE
FAULT RESET
P9-9
P9-7
P9-8
RAISE/LOWER INPUTS P9-6
P9-4
P9-5
ALARM DRIVER P12-4 (-)
4
1
SHUTDOW N FAULT DRIVER
P12-9 (+) 5
P12-5 (-)
+/-10 VDC CONTROL INPUT P12-6 (+)
5
P12-3 (-) 6
9
52a
S1 2
P0018-25 07-16-03
3
1
Required only for Var/PF control. Var/PF is active with 52a closed, inactive with 52a open.
2
Excitation is disabled when closed, enabled when open.
3
Momentary closure resets any shutdown fault.
4
S1 (SPDT, spring-return to center-off position) adjusts CAT DVR-II setpoint.
5
Normally-off, turns on for user alarm or trip.
6
Analog input voltage between -10 and +10 Vdc provides adjustment of operating setpoint.
7
External fuses should be sized to match the AREP windings and protect the field. Maximum fuse size should be limited to Bussmann type KTK-12 or equivalent.
8
Sensing potential transformer is required if line voltage exceeds 660 Vac.
9 10
Item not supplied by Caterpillar. When generator rotation is ACB, the connections shown for CTB should be reversed.
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Mounting VR-6
DVR
CDVR
The VR-3 (not shown), VR-6, DVR and new CDVR all have the same bolt pattern and mount in the same location in the generator enclosure.
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Reminder – Live Terminals and Heatsinks
VR-6
CDVR
The VR-6 and CDVR both present an electrical shock risk. Terminals and heatsinks are live at potentially lethal voltages when power is applied and for up to 8 minutes after power is removed. This high voltage may cause electrical shock that could result in injury or death. Service by trained personnel only.
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Wiring Comparisons to the DVR • • • •
Droop CT wiring Fault Alarm and Shutdown Output Driver Logic VAR/PF enable, fault reset, and excitation disable inputs Remote voltage and VAR/PF adjustment
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Wiring Comparisons to the DVR
DVR
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Wiring Comparisons to the DVR •
•
•
The DVR uses an 8-ohm resistor with a 1 Amp droop CT or a 1-ohm resistor with a 5 Amp droop CT. The CDVR requires a 5 Amp droop CT and no resistor across the CT output. Note: CT leads which are not connected to the regulator must be shorted to avoid a potential shock hazard.
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DVR
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Wiring Comparisons to the DVR •
DVR and CDVR have the output driver logic reversed. The DVR low side driver outputs for the fault alarm and shutdown are active high (driver output floats when a fault is active). The CDVR low side driver outputs for the alarm and shutdown are active low (driver output pulls low when a fault is active). A CDVR output is N/O and would energize to close the output circuit upon an alarm or shutdown.
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•
•
DVR
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Wiring Comparisons to the DVR •
•
The DVR VAR/PF enable, fault reset, and excitation disable inputs activate with +24VDC. The CDVR VAR/PF enable, fault reset, and excitation disable inputs require a normally open dry contact to enable the function.
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DVR
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Wiring Comparisons to the DVR •
•
The DVR utilizes a 10K-ohm potentiometer for remote voltage adjust another for remote VAR/PF adjustments The CDVR uses a single momentary switch with raise and lower contacts. The switch adjusts voltage in AVR mode and also adjusts VAR or PF if operating in that mode.
DVR
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Caterpillar Digital Voltage Regulator (CDVR) PC Software Installation
Prepared by Service Training https://psmktg.cat.com/srvtrng/
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CDVR PC Software Download •
The CDVR PC software and an IBM Compatible Personal Computer or Laptop is required for the service technician to program CDVR set points and parameters and to access status indicators and regulator metering functions.
•
This Presentation has detailed steps for downloading the PC Software from SIS (Service Information System), establishing communications and programming the CDVR.
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CDVR PC Software Download •
Navigate to SIS at https://sis.cat.com
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CDVR PC Software Download •
Click on “Downloads”
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CDVR PC Software Download •
Click on “CDVR PC Software.exe”
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CDVR PC Software Download •
Verify “Save this file to disk” is selected as shown and then click the “OK” button
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CDVR PC Software Download •
Select where to save the file. The example shows the file being saved as “CDVR PC Software” to the computer Desktop.
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CDVR PC Software Download • • •
The “CDVR PC Software” file will download and a Download Complete box will appear when the download is complete. Click “Close”. This file is 6.17MB in size and may take longer with slower network or modem connections. This completes the software download.
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CDVR PC Software Installation • •
Run the file by double-clicking on the file “CDVR PC Software” If the file has not been saved to the desktop, navigate to the folder where it was saved and open the CDVR PC Software program file as shown below.
or
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CDVR PC Software Installation •
Follow the installation instructions and click “Next” when ready.
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CDVR PC Software Installation •
Verify the folder location and click “Next”.
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CDVR PC Software Installation •
Click “Next”…
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CDVR PC Software Installation •
Click “Next”…
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CDVR PC Software Installation •
Click “Next”
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CDVR PC Software Installation •
A window will appear with the bars showing the installation…
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CDVR PC Software Installation • •
When the installation is complete click “Finish” This completes the software Installation
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4 3 2
To start the CDVR PC software follow these four steps. 1. Click the Start button 2. Click Programs 3. Click Caterpillar Software 4. Click Cat PC Software 1
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CDVR PC Software •
Startup Screen when the software is launched
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What’s needed for communication? 1. 2.
3.
Computer with the CDVR Software installed (the computer must meet the minimum requirements in the CDVR Service Manual) Cable to connect the computer to the CDVR RS-232 port. Newer computers may not have an RS-232 port and may require a USB to RS-232 adapter (237-7547). Cables are not provided. 24VDC power to the CDVR input power connections. AC Sensing and/or PMG power voltage is not needed for communication.
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Caterpillar Digital Voltage Regulator (CDVR) PC Software Overview
Prepared by Service Training https://psmktg.cat.com/srvtrng/
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CDVR Programming Overview •
The next few slides provide only a brief explanation of the CDVR PC Software screens and parameters. The CDVR Service Manual, RENR7941, should be referenced for more detail on the parameters and functions not covered in this overview.
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CDVR Programming Overview •
“File” pull down menu is used to Open, Save or Print CDVR program configuration (*.DV2) files
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CDVR Programming Overview •
“Communications” pull down menu is used to connect or disconnect CDVR communication
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CDVR Programming Overview •
“Screens” pull down menu or the buttons are used to select the five configuration screens
Both is the same
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CDVR Programming Overview •
“Upgrade” pull down is for upgrading the CDVR embedded software
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CDVR Programming Overview •
“Help” pull down will display the version of PC Software being used. here.
Also shown
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System Configuration Screen •
“Configuration” screen has generator voltage and current output and sensing parameters.
Only fields with a white background can be changed. In this case, “Rated Voltage” has been selected and is high lighted. The bottom screen bars show the minimum, maximum and step or increment allowed for the selected parameter.
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System Configuration Screen •
“Configuration” screen has generator voltage and current output and sensing parameters.
Rated voltage is changed from 120V to 240V by typing “240” and then the “Enter” key. (Do not use the Tab key). When 240 is entered the Rated KVAR automatically changes from 75 to 150. Fields with a black background cannot be clicked on and changed.
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System Configuration Screen •
There are two operating frequency parameters.
“Power Input Freq” is the frequency of the input power. On SE this is the same as the generator operating frequency which is 50 or 60Hz only. For PMG It is the frequency from the PMG exciter stator from 50-400hz. “Frequency” comes from the generator nameplate and will be 50 or 60 Hertz.
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System Configuration Screen •
Other sensing parameters explained
Sensing Mode can be Three or Single Phase PT Primary and Secondary voltages
Droop CT is programmed to 600 on the primary. 5 on the secondary is not adjustable so the droop CT ratio is 600:5
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System Configuration Screen •
Get From Unit Button
Voltage regulator settings are retrieved by clicking the “Get From Unit” button. This causes the current settings of the CDVR to be displayed on the “settings” screen. This button will be grayed out until the communication is established. Parameter changes are sent to the CDVR by pressing the Enter key on the PC or by selecting a setting from a pull-down menu. This causes the selected setting displayed on the setting screen to become the active voltage regulator setting.
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System Configuration Screen •
EEPROM Button
Settings are saved in the CDVR EEPROM (nonvolatile memory). When power is removed, the EEPROM saved settings will be active at power-up. If the settings are changed and sent to the voltage regulator by hitting the enter key, they are not sent to the EEPROM. They will be lost if the CDVR is powered off. When closing communication the software will prompt the user to save the settings to the EEPROM. This question is asked even if no changes were made to the settings. While communicating the user can save changes to the EEPROM anytime by clicking the “EEPROM” button.
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System Configuration Screen •
Information for PC Software and CDVR
PC Software version The CDVR serial number, internal embedded software version and CDVR part number will show in these three boxes
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Setting Adjustments Screen •
Setpoint Parameters
AVR Voltage is the terminal output voltage of the generator in the AVR mode. VAR percentage sets VAR level maintained in the VAR mode. Power Factor sets the PF maintained in the Power Factor mode.
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Setting Adjustments Screen • Setpoint Parameters Load Compensation Mode settings are “Off, Droop, or Line Drop”. “Off” is no voltage droop. “Droop” allows up to 10% droop at full load. “Line Drop” allows voltage to increase up to 10% for line loss compensation. The Setpoint (%) for “Droop” and “Line Drop” is 0 to 10%.
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Setting Adjustments Screen •
Startup Parameters Soft Start Mode
Soft Start Bias (%) determines the generator voltage at startup. 0 to 90 may be entered. Soft Start Time (sec) establishes the length of time for the generator voltage to increase to the rated level. 0 to 120 sec. may be entered.
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Setting Adjustments Screen • Startup Parameters Under Frequency Mode The five programmable Under Frequency Mode parameters determine the CDVR under frequency voltage regulation characteristic curve. The next slide has a graph of the under frequency voltage regulation characteristic curve and setpoints.
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480
VAC
0 0Hz
25
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55 60Hz
Regulation Characteristic. Below the Knee Frequency, the generator voltage follows a decreasing slope based on generator frequency. When generator frequency is between the Knee Frequency and Knee Frequency minus 5 hertz, voltage follows Slope 1. When generator frequency is between the Knee Frequency minus 5 hertz and the Underfrequency Point, voltage follows Slope 2 down to the Minimum Voltage Setpoint. When generator frequency is below the Minimum Frequency Point, excitation is removed. Programming Decreasing Slope 2 is optional.
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Control Gain Screen Generators delivered with a CDVR installed will have these parameters set for optimal generator operation. These settings may vary on different packages.
Control Gain
These parameters are covered in detail in the Service Manual and it should be referenced when making changes.
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Protection Settings Screen •
Protection
The Shutdown Override button can be toggled from DISABLED to ENABLED during set-up or troubleshooting. If the Fault Reset Switch is held too long the CDVR will take programmed action.
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Protection Settings Screen •
Protection
Protective settings like Generator Overvoltage have the following: 1. Enable check box, 2. Fault Type (Alarm or Shutdown) 3. Trip Value (%) 4. Time Delay (Sec.) If output voltage exceeds 135% for 2 seconds, an Alarm condition will activate.
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Protection Settings Screen •
Protection
Excitation (Exciter Stator) current is monitored and if the programmed limits are exceeded the excitation current will be disabled.
Excitation current will also be disabled if the Exciter Diode Monitor or Loss of Sensing limits are exceeded.
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Metering, Operation and Alarms Screen
• Metering Password When the “Metering” button is clicked a password prompt window opens. This screen has password protection to prohibit an untrained person from changing parameters which may cause damage to the generator or force the generator into an unsafe operating mode.
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Metering, Operation and Alarms Screen
When the password “cat” is entered, full access is granted. If “Cancel” is selected the Metering data is available only for viewing. Fields with white backgrounds cannot be changed and the soft buttons will be inactive.
cat
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Metering, Operation and Alarms Screen Generator operating parameters values are displayed in green. Operating Mode is AVR and can be changed to VAR or PF if VAR/PF contact is closed. Fine Adjustment acts as the raise/lower switch and varies the voltage setpoint in AVR mode. This would vary PF/VARs if in the PF/VAR mode.
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Metering, Operation and Alarms Screen Setpoint allows the user to change the AVR, VAR or PF level to be maintained while the generator is operating.
Caution: While the generator running, the CDVR will immediately change its regulation to obey the values or buttons changed on this screen. Customer access is discouraged.
1VDC change cause a 1% AVR volt change or 10% KVAR change or .04 PF change
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Metering, Operation and Alarms Screen
“Status” will light the soft LED modes that apply when active. “Contact Inputs” will light when switched inputs are activated. “Alarms” will light when the alarm is active or if a shutdown has occurred due to an alarm. The hard wired reset switch will reset.
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Metering, Operation and Alarms Screen The “Alarm Signal” LED will light if there is an active alarm condition. When the “Disabled” button is toggled to “Enabled” the CDVR will not allow normal shutdown faults to shutdown excitation for troubleshooting. This must be used carefully to protect the generator from unsafe conditions.
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Summary This concludes the training overview of the CDVR. This presentation will be updated as needed and available on the Caterpillar Service Training Website at: https://psmktg.cat.com/srvtrng/ Again, the proper service information for the regulators in SIS should be used for the latest specific details for operation, adjustments, programming and troubleshooting.
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CDVR Lab optional
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Control Panels
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The 3N8900 Type 5
This is the 3N8900 type V control panel. It's been around for a number of years and there are still many of them in use today. This panel will be covered in detail later. The panel has AC Ammeter, frequency meter, AC Voltmeter,; Off / Reset, Auto, Start, Stop Engine Control Switch, GovernorExcellence Speed Control, Alarm Service & Panel, etc. Four fault lights for Low Oil Pressure, Excessive Water Temperature, Over Crank, and Over Speed. Relentless Execution
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Caution VAC This is the inside of the Type V control panel. Notice the tape on the back of the meters. There is 480 volts on the meters so opening the panel during operation is not recommended.
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Around 1985 Caterpillar started to standardize the control panels making this “Engine Junction Box" EP Basic AP Service Learning with all of the electromechanical inputs inside. Oil pressure switches are mounted on the rear of the box and Water Temperature switches are mounted elsewhere on the engine. Before this box was used, wiring was done using a schematic without a wire routing diagram or “common” wiring strategy. Cat developed the harness and a Junction box to make a common wiring for all. This junction box is still being used today not only in genset applications but also in many industrial and marine as well as other commercial applications.
Junction Box
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Here is the internal view of the Junction Box. In it are the Engine Speed Switch (ESS), Time Delay Relay EP Basic AP aService Learning (TDR), an emergency stop switch, a power relay, and an hour meter. The standard harness is inside of the corregated plastic conduit. The wires are labeled with a wire code for to make troubleshooting easier. The box is shock mounted to absorb engine vibration to protect the components inside the junction box. With out proper shock mounting the small relay contacts inside the ESS and TDR may chatter cause a failure or shutdown.
ESS
Power Relay
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Hr. Meter
Emerg. Emerg. Stop Sw.
TDR
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This electromechanical control panel 4W8000 was used with the engine mounted junction box. It has an EP Basic AP Service Learning Automatic Stop/Start module with 4 fault lights for Oil Pressure, Water Temperature, Overspeed, and Overcrank. There is an Emergency Stop switch. The control switch has four positions:. Auto, Manual, Stop and Reset. The panel also has a Voltmeter, Ammeter, Frequency Meter, Oil Pressure and Water Temperature gauges, and an optional Alarm Module that warns when some things are about to fail. If the oil pressure is low, but not too low, it will turn on the low oil pressure alarm light.
The 4W8000 with auto start/stop
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Alarm Module
EMCP I
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AC Meter Module
Engine Control Module
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•
•
•
In 1987 the Electronic Modular Control Panel (EMCP) was put into production. This was abbreviated as ECMP, not “EMCP I”. Folks later began to call it “EMCP I” when the ECMP II panel was released in the mid-90’s to distinguish between the two. The EMCP panel simplified the genset control system by eliminating a lot of wires, senders and switches. The LCD displayed hours, Engine Speed, Battery Voltage, Oil Pressure, and Coolant Temperature. These controls are used in many switchgear applications also. This panel needs only one magnetic pick-up, one oil pressure sensor, and one coolant temperature sensor mounted on the engine. The engine junction box was no longer needed.
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Alarm Module Set point Adjustment
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“2 Potentiometers ” and Switch
Switches and Resistor
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•
EMCP Panel interior. This EMCP panel was actually cost effective too because the enclosures are very rugged and reliable. To program, the technician needed to remove a rear cover and use switches and a pot to change parameters. Notice the single phase AC meter module. The ECM and AC Meter module are installed in many switchgear applications. The Annunciator is on the left.
• •
“Pots” and switch are used to program the parameters of the ECM. Switches and Resistor are used to program the AC Module voltage and CT Ratios. Alarm Module Dc Volt “pot” can be used to adjust the DC Alarm level
•
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EMCP II
This is a picture of the EMCP II GSC. It is the brain of the EMCP II system. The GSC (Generator Set Control) combines the AC Meter, Annunciator and ECM into one module. Also added was a Transformer box in the back of the panel for more accurate AC metering of all three phases. Lights for E-Stop, coolant level and fault lights were added. The “EMCP II” adds even more features than the EMCP I. If there was a need to program the EMCP I ECM, the technician had to remove a cover, push buttons and select a rotary switch to the proper position and then do the programming. All of these switches and pots are on the back of the panel and the display is in the front. The EMCP II GSC is programmed using the pushbuttons on the front of the panel. The programming password is 13231. Notice the engine display (on bottom) is a little shorter in length than the generator display (on top). EMCP II was introduced in 1994.
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EMCP II+
EMCP II+. The “+” or “Plus” has large displays on the top and bottom of the GSC. In the “Plus” one can read Kw, Kva, Power Factor, Kw hours, percent of load or percent Kw, etc. The AC metering can display separate phases or totals, average voltage, average frequency and total current. When the customer sees the “total current” of all three phases he may see the result of 500 Amps per phase which will show 1500 AMPs. This usually surprises them until it is explained. This works very much like the EMCP II. The “plus” also has Protective Relay functions. There is not a typical relay but it can be programmed for alarm or shutdown parameters such as over current or over voltage to provide industrial grade relay protection. This slide actually shows two alarm modules.
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Controls
Alarm Module
GSC Customer Alarm Module
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EMCP 3
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EMCP I & II Control Panel Attachments
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ALARM MODULES Amber
Red
Alarm modules can be used to annunciate low fuel level, outside switch closures, air damper, air flapper down, battery charger, not in auto, etc. The Annunciator gets information from the EMCP or EMCP II via a serial data link from the main control panel or from external switches. Changing the type of Annunciator or its function is a matter of sticking a new graphics film on the front and changing the jumper wires located in on the rear terminals. There are at least six configurations for these modules. Any one can be converted to the other usually by changing the jumpers configuration and the film on the front. Each film has a part number listed on the lower right corner, that part number is for the film and not the Annunciator. The Annunciator number is located on the rear of the module. Horn and Alarm silence button are at the bottom as well as the test lamp.
Remote Annunciators
GENERATOR TROUBLE
SET
GENERATOR
SET
SUPPLYING LOA D
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Remote Annunciators • This is a slightly different version with the same control used as a Remote Annunciator. Shown also an NFPA 110 remote Annunciator which just has a “generator trouble light”, a “generator supplying load light”, a horn, and a horn silence button. An EMCP system can use as many as three Annunciators or remote Annunciator combinations. One can be located on the control panel, and two may be 500 feet away. 1000 feet total of wire is the limitation of the data link because the long run of wires add capacitance which rounds off the edges of the digital serial link pulses. If the serial data link is corrupted or lost the Annunciator will flash its lights at a 1/2 hertz cycle.
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Customer Interface Module (looks like the relay driver module)
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This is the Customer Interface Module (CIM) and relay hardware. Instead of activating LEDs from the serial data link like the Annunciator, it receives the data link information to activates relays. So instead of turning LEDs on, it turns relays on. The relays can then be used to activate lamps in various locations. A lot of switchgear builders and customers like that because they want to have the lights instead of a single Annunciator with a set number and color of LEDs. One mis-application that happens is that some people wire the relays to trigger a shutdown for a certain fault. It's not intended to be a shutdown because if the generator is running and someone pushes the “lamp test” button, all of the relays activate and any that can cause a shutdown will shutdown the engine. Also, if there is any problem with the datalink, then the ‘shutdown’ circuit will not work properly or possible in an unsafe manner. Troubleshooting Tip: Pin 18 goes in and out on relay board (which may have electrical noise) to terminal 4 on the dark brown terminal brick. If the CIM is shutting down, run the shielded 18 line to terminal 4 skipping the relay board altogether. If there is a a CIM, RDM and an Annunciator all in one system and one loses power, the un-powered unit will pull the data link down and this un-powered unit will be completely dead and the others will have all the lights on.
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Customer Communications Module Customer Communications Module
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The Customer Communications Module (CCM) is simply a ‘translator box’. It takes the Cat Data Link output out of the EMCP II and translates it into an RS232 protocol that will communicate with a computer if that computer has the CCM desktop software installed. In the paralleling class, a CCM is used to start an engine remotely with a modem over a phone line. It is convenient to use a CCM and Laptop PC when running an acceptance test on a generator set. There is a data logger mode so data can be loaded into the PC and put into a spreadsheet to show generator loading data for example. In “Primary Mode” a CCM can monitor four EMCP IIs and four ADEM II ECMs. In “Secondary Mode” one CCM can monitor up to eight EMCP IIs without any ADEM II ECMs. The ADEM II ECMs are sometimes monitored because they too have the Cat Data Link and have detailed engine sensor and operating information.
This does have an internal battery behind the display for internal memory. On the back, it has connections for the RS-232 serial cable for connection to a PC. The Cat Data link connection connects to the GSC Module in the EMCP.
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EMCP II and EMCP 3 Control Panel Attachment
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PL1000T and PL1000E Product
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PL1000T Package Features M5X / M50 Protocol Support (CCM Replacement) Engine Vision Module Interface Protocol Global Position System Module Interface (NMEA-183) Sea Water Temperature and Depth Interface (NMEA-183) Cat Data Link Tunnel J1939 Bridge CAN Extension Bridge Embedded Communications Adapter Cat Data Link Boost
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PL1000T Cross-Functional Matrix Modules Previously Required
M5X M50
J1939 Bridge
J1939 Long Distance Extension
CDL Tunnel
Embedded Communications Adapter
CDL Boost
EVIM
GPSIM
PL1000T Required
3
1
3
1
3
1
2
2
4
1
4
1
4
1
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PL1000E Package Features CDL to Modbus Parameter Translation J1939 to Modbus Parameter Translation Embedded Webserver Embedded Communications Adapter Cat Data Link Boost Caterpillar Communications Tool Kit Configuration CDL to Webserver Parameter Translation J1939 to Webserver Parameter Translation
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PL1000E Cross-Functional Matrix
CDL to Modbus
J1939 to Modbus
Embedded Web Server
Embedded Communications Adapter
CDL Boost
CDL to Web
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Today Menu: 3. SIS access to System Operation/Testing and Adjusting • EMCP I (SENR3535 via SIS) • EMCP II+ (RENR1200 via SIS) • EMCP III (RENR7902 via SIS) 4. TMI web
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TMI and Web Information
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TMI on the Web • URL: http://tmiweb.cat.com • TMI Web pages – Engine Data – Generator Data
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TMI on the Web • URL: http://tmiweb.cat.com • TMI Web pages – Engine Data
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Entry Screen
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Test Cell Results
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As Shipped
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Flash File
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Systems Data
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Physical Data
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Water Pump Physical Data
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Gasket Kit Data
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Re-man Parts Data
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Performance Data
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Par Dyno
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Engine Test Spec.
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Component Data
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Example Component Data
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Example Component Data
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Certify Rerate
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TMI on the Web • URL: http://tmiweb.cat.com • TMI Web pages – Engine Data – Generator Data
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5N-5078
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Select
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Questions ?
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Other Useful Electric Power Information available from the Web:
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Electronic Media Center
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Images are not well indexed & may not be described correctly.
Electronic Media Center
Some of the Available Document Catagories
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Electric Power Quicksize software for Olympian Generator Sets: https://epd.cat.com/infocast/frames/ep
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End of Slides
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