The 351-8758 ECM Controller is an Electronic Control Module (ECM) designed for CAT (Caterpillar) generators equipped with the EMCP 4.1 or EMCP 4.2 control systems.
Key Features & Functions:
Engine & Generator Monitoring: Controls and monitors engine parameters (RPM, oil pressure, coolant temp, etc.) and generator output (voltage, frequency, current).
EMCP 4.1/4.2 Compatibility: Works with Caterpillar’s EMCP 4.1 (Electronic Modular Control Panel 4.1) and EMCP 4.2 systems.
Fault Detection & Alarms: Provides diagnostic codes and alarms for engine/generator issues.
Automatic Start/Stop: Manages generator startup and shutdown sequences.
Communication Capabilities: Supports communication protocols for remote monitoring (e.g., CAT ET, PLC, or SCADA systems).
Common Applications:
Industrial & commercial backup power generators
Mining, oil & gas, and marine power systems
Data centers and critical power applications
Replacement & Troubleshooting:
If faulty, the 351-8758 ECM may need replacement or reprogramming.
Check for fault codes using CAT Electronic Technician (ET) or the EMCP panel.
Ensure proper wiring and sensor connections before replacing the ECM.
Usage and maintenance suggestions:
1. Regular diagnosis
-Using Cat ® ET or Messenger reads the fault code (such as CID 0246 CAN
bus abnormality for MID 082) and promptly cleans the sensor dirt.
2. Environmental and oil requirements
-Use clean diesel with a filtration accuracy of ≤ 5 μ m to prevent clogging of precision components;
-The working temperature should be ≤ 26 ℃ to avoid ECM component aging caused by high temperature.
3. Preventive maintenance
-Calibrate rail pressure sensors and flow meters every six months;
-Check the waterproof sealing of the wiring harness, especially in high humidity environments
such as mines and ships.
4. Fault response
-Symptoms of ECM failure: sudden power drop, shaking and stalling, black smoke emission.
-Emergency plan: Immediately shut down the machine, check the power supply and grounding;
