ALTERNATOR GP-CHARGING 3E7295 - Caterpillar

The Electronic Control Module (ECM) monitors engine parameters. If a parameter extends outside an acceptable range, the ECM will initiate action. The ECM can cause a warning to occur. The ECM can derate engine power. The ECM can cause an engine shutdown to occur. Not all of the actions are available for all parameters.The Caterpillar Electronic Technician (ET) can be used to select the ECM response. The Cat ET can be used to program the level of engine monitoring and the delay times.Note: The following tables are examples. The values may have changed. Use the Cat ET to determine the actual defaults and the specific configuration.
Table 1
Programmable Monitoring System
Parameter ECM Response Default Trip Point Default Delay Time Limits
Range for Trip Point Delay Time
Low High
Low System Voltage Off
Warning 20 VDC 10 Seconds 20 VDC 22 VDC 1 to 30 seconds
Low Oil Pressure Off
Warning (1) 4 Seconds N/A 1 to 15 seconds
Shutdown (1) 9 Seconds N/A 1 to 15 seconds
High Coolant Temperature Off
Warning 102 °C (216 °F) 5 Seconds 90 °C (194 °F) 102 °C (216 °F) 1 to 60 Seconds
Derate 107 °C (225 °F) 30 Seconds 90 °C (194 °F) 107 °C (225 °F) 1 to 60 Seconds
Shutdown 107 °C (225 °F) 5 Seconds 90 °C (194 °F) 107 °C (225 °F) 1 to 60 Seconds
Low Coolant Temperature Off
Warning 80 °C (176 °F) 5 Seconds 63 °C (145 °F) 85 °C (185 °F) 1 to 60 Seconds
Engine Overspeed Off
Warning 1.18 × Rated Speed 0 Seconds 1200 rpm 2400 rpm 0 to 5 Seconds
Shutdown (50 Hz) 1.18 × Rated Speed 0 Seconds 1200 rpm 2400 rpm 0 to 5 Seconds
Shutdown (60 Hz) 1.18 × Rated Speed 0 Seconds 1200 rpm 2400 rpm 0 to 5 Seconds
Air Filter Restriction Pressure Off
Warning 7 kPa (1 psi) 5 Seconds 3 kPa (0.4 psi) 7 kPa (1 psi) 1 to 60 Seconds
Derate 7 kPa (1 psi) 5 Seconds 1 kPa (0.14 psi) 7 kPa (1 psi) 1 to 60 Seconds
Altitude Off
Derate (2) N/A 250 m (820 ft) 3658 m (12001 ft) N/A
High Exhaust Temperature Off
Warning (2) 5 Seconds 500 °C (932 °F) 800 °C (1472 °F) 1 to 60 Seconds
Derate (2) 5 Seconds 1 to 60 Seconds
Oil Filter Differential Off
Warning 105 kPa (15 psi) 5 Seconds 70 kPa (10 psi) 105 kPa (15 psi) 1 to 60 Seconds
Fuel Filter Differential Off
Warning 105 kPa (15 psi) 5 Seconds 70 kPa (10 psi) 105 kPa (15 psi) 1 to 60 Seconds
Crankcase Pressure Off
Warning 2 kPa (0.3 psi) 3 Seconds 0.5 kPa (0.1 psi) 6 kPa (0.9 psi) 1 to 30 Seconds
Derate 6 kPa (0.9 psi) 10 Seconds 0.5 kPa (0.1 psi) 6 kPa (0.9 psi) 1 to 60 Seconds
Shutdown 3.5 kPa (0.5 psi) 3 Seconds 0.5 kPa (0.1 psi) 6 kPa (0.9 psi) 1 to 60 Seconds
Aftercooler