EMCP4.1/EMCP4.2 Caterpillar

The engine setpoint verification procedure verifies that the EMCP 4 operates correctly when one of the following faults occurs:

Engine overspeed - Causes the EMCP 4 to shut the engine down

High coolant temperature - Causes the EMCP 4 to either shut the engine down or to issue a warning based on the event response configuration setpoints

Low oil pressure - Causes the EMCP 4 to either shut the engine down or to issue a warning based on the event response configuration setpoints

Relevant Engine Parameter Group Setpoints

The engine setpoint verification procedure is used in order to adjust the relevant configuration setpoints in the configuration parameter groups that are used during normal operation.

The following conditions are required before the engine setpoints are verified:

• The relevant setpoints 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 and all shutdown events.

During the procedure, each configuration setpoint that is to be adjusted should be recorded, and then returned to the original setting after the setpoint has been verified.

Note: Prior to performing this procedure, a service replacement file can be saved using Caterpillar Electronic Technician Cat ET. The replacement file is used in order to record the configuration to allow reprogramming the control with the original setpoints 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 one 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

Overspeed

Setpoint: Engine Over Speed Shutdown Threshold

Note: This is a password protected Level 3 setpoint. The passwords only affect changing parameters from the EMCP 4 control panel display. Changing parameters with the Caterpillar Service Tool does not require passwords.

Reference: For details on changing the EMCP 4 security level, see Systems Operation, "Password Entry".

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

2. Adjust the setpoint value to a value that is below the speed that the engine is running, and then press the "OK" key. An engine overspeed shutdown event will immediately occur.

3. View the event in the event log.

   Reference: Refer to the Systems Operation, "Event Viewing" section of this manual.

4. Reset the event.

   Reference: Refer to the Systems Operation, "Event Resetting" section of this manual.

5. Return the setpoint value to its original value.

Low Oil Pressure

Setpoint: Low Engine Oil Pressure Shutdown Event Threshold

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

2. Adjust the setpoint value to a value that is above the oil pressure that is being displayed, and then press the "OK" key a shutdown event will occur after the programmable time delay has expired. The default for this delay is ten seconds.

3. View the event in the event log.

   Reference: Refer to the Systems Operation, "Event Viewing" section of this manual.

4. Reset the event.

   Reference: Refer to the Systems Operation, "Event Resetting"

5. Return the setpoint value to its original value.

High Coolant Temperature

Setpoint: High Engine Coolant Temperature Shutdown Event Threshold

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

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

3. View the event in the event log.

   Reference: Refer to the Systems Operation, "Event Viewing" section of this manual.

4. Reset the event.

   Reference: Refer to the Systems Operation, "Event Resetting"

5. Return the setpoint value to its original value.