EMCP3 Caterpillar

The engine set point verification procedure verifies that the EMCP 3 operates correctly when one of the following faults occurs:

Engine overspeed - Causes the EMCP 3 to shut down the engine

High coolant temperature - Causes the EMCP 3 to either shut down the engine or to issue a warning based on the event response configuration set points

Low oil pressure - Causes the EMCP 3 to either shut down the engine or to issue a warning based on the event response configuration set points

Relevant Engine Parameter Group Set Points

Engine set point verification procedure is used to adjust the configuration set points in the configuration parameter groups that are used during normal operation.

The following conditions are required before the engine set points are verified:

• The relevant set points listed in each configuration parameter group must be correct for the engine application.

• No shutdown events should be present at the initial start-up. If necessary, troubleshoot, correct, and reset any shutdown events.

During the procedure, each configuration set point that is to be adjusted must be recorded. Any set point that was adjusted must be returned to the original setting after the set point has been verified.

Note: Prior to performing this procedure, a service replacement file can be saved using the Caterpillar service tool. The replacement file is used in order to record the configuration. The record of the configuration allows the control to be returned to the original set points after the procedure has been completed.

Engine Protection Events Configuration

• High engine coolant temperature shutdown event response configuration (hard shutdown enable/disable)

• Low engine oil pressure shutdown event response configuration (hard shutdown enable/disable)

Engine Speed Monitor

Table 1

Engine Over Speed Shutdown Threshold (adjust value)
Adjustment Range	400 to 4330 RPM in 1 RPM increments
Default value	2120 RPM (or 1.18 times the rated speed)

Engine Coolant Temperature Monitor

Table 2

High Engine Coolant Temperature Shutdown Event Threshold (adjust value) (1)
Adjustment Range	49 °C (120 °F) to 120 °C (248 °F) in 1 degree increments
Default value	107 °C (225 °F)
Warning Indication	Occurs at 102 °C (216 °F)
Default Time Delay	10 seconds

(1)	Requires engine to be running at rated speed for verification

Engine Oil Pressure Monitor

Table 3

Low Engine Oil Pressure Shutdown Event Threshold (adjust value) (1)
Adjustment Range	34 kPa (5 psi) to 690 kPa (100 psi) in 1 unit increments
Default value	205 kPa (30 psi)
Warning Indication	Occurs at 239 kPa (35 psi)
Default Time Delay	10 seconds

(1)	Requires engine to be running at rated speed for verification

Verification Procedures

Engine Over Speed Shutdown Threshold Set Point

Note: The engine over speed shutdown threshold is a password protected Level 3 set point. The passwords only affect changing parameters from the EMCP 3 control panel display. Changing parameters with the Caterpillar Service Tool does not require passwords.

Reference: For details on changing the EMCP 3 security level, see Systems Operation, RENR7902, "Password Entry".

1. Start the engine and run the engine at the rated speed.

2. Adjust the set point value to a value that is below the speed that the engine is running, and then press the "ENTER" key. An engine over speed shutdown event will immediately occur.

3. View the event in the generator set control event log.

   Reference: Systems Operation, RENR7902, "Event Viewing"

4. Reset the event.

   Reference: Systems Operation, RENR7902, "Event Resetting"

5. Return the set point value to the original value.

Low Engine Oil Pressure Shutdown Event Threshold Set Point

1. Start the engine and run the engine at the rated speed.

2. Adjust the set point value to a value that is above the oil pressure that is being displayed, and then press the ENTER key. A shutdown event will occur after the programmable time delay has expired. The default for this delay is 10 seconds.

3. View the event in the generator set control event log.

   Reference: Systems Operation, RENR7902, "Event Viewing"

4. Reset the event.

   Reference: Systems Operation, RENR7902, "Event Resetting"

5. Return the set point value to the original value.

High Engine Coolant Temperature Shutdown Event Threshold Setpoint

1. Start the engine and run the engine at the rated speed.

2. Adjust the set point value to a value that is below the engine coolant temperature that is being displayed, and then press the "ENTER" key. A shutdown event will occur after the programmable time delay has expired. The default for this delay is 10 seconds.

3. View the event in the generator set control event log.

   Reference: Systems Operation, RENR7902, "Event Viewing"

4. Reset the event.

   Reference: Systems Operation, RENR7902, "Event Resetting"

5. Return the set point value to the original value.