WASHER-ISOLATOR 2127728 - 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 downHigh coolant temperature - Causes the EMCP 4 to either shut the engine down or to issue a warning based on the event response configuration setpointsLow oil pressure - Causes the EMCP 4 to either shut the engine down or to issue a warning based on the event response configuration setpointsRelevant 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 verificationEngine 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 verificationVerification Procedures
Overspeed
Setpoint: Engine Over Speed Shutdown ThresholdNote: 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".
Start the engine and run the engine at its rated speed.
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.
View the event in the event log.