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Engine Speed Timing Calibration - Setup: SMCS - 1912-587

The document provides instructions for adjusting engine speed timing calibration on a generator set. It describes disconnecting devices supplying the engine speed PWM signal, setting EMCP 3 parameters, starting the engine at idle speed, performing the engine speed timing calibration, resetting modified parameters, and reconnecting disconnected wires. The procedure ensures the engine can be started and run at rated speed after an engine speed timing calibration.

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132 views2 pages

Engine Speed Timing Calibration - Setup: SMCS - 1912-587

The document provides instructions for adjusting engine speed timing calibration on a generator set. It describes disconnecting devices supplying the engine speed PWM signal, setting EMCP 3 parameters, starting the engine at idle speed, performing the engine speed timing calibration, resetting modified parameters, and reconnecting disconnected wires. The procedure ensures the engine can be started and run at rated speed after an engine speed timing calibration.

Uploaded by

fery
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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3516B Generator Set FDN00001-UP(SEBP3303 - 34) - Document Structure Page 1 of 2

Shutdown SIS

Previous Screen

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Engine Speed Timing Calibration - Setup


SMCS - 1912-587

The following procedure describes the adjustments that are required if an "Engine Speed
Timing Calibration" is performed. After this procedure has been completed, the engine
can be started and the engine can be run at rated speed.

Note: This procedure does not include the instructions for performing the actual
calibration.

Note: Before changing any value per this procedure, record the original value.

1. Stop the engine.

2. If a device such as a load share module is supplying the PWM signal in order to bias
the engine speed, then disconnect the wires from the device. Go to Step 4

If there is not a device that is supplying the PWM signal and the engine speed bias
is controlled from the EMCP 3, then go to Step 3.

3. Use the EMCP 3 control screen in order to go to idle. Refer to the "Idle Speed and
Rated Speed" information that is in the "Voltage and Frequency Adjustment"
section of this publication. Go to Step 5.

4. Set the "Engine Start Fault Protection Activation Delay Time" setpoint in the EMCP
3 to 90 seconds. Use the Cat ET in order to set the "Secondary Desired Speed Input
Configuration" set point in the engine ECM to "DISABLED".

5. Start the engine and run the engine at idle speed.

https://sis.cat.com/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisweb/... 7/6/2009
3516B Generator Set FDN00001-UP(SEBP3303 - 34) - Document Structure Page 2 of 2

6. Perform the "Engine Speed Timing Calibration" .

7. Stop the engine.

8. Use Cat ET in order to return the set points that were modified in Step 2 through
Step 4 to the original values. Navigate to the "Control" screen, then go to the
"Rated" screen.

9. Reconnect any wires that were disconnected in Step 2.

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https://sis.cat.com/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisweb/... 7/6/2009

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