CAT C32 - 2.2.3. Description

Technical CATERPILLAR – 1000 kVA Page 6
Description UTILITY POWER MODULE
Revision 1.0 1 May 2006
2 - Advanced features
 Isochronous or droop speed control.
 Enhanced performance from fuel injection timing and limiting.
 J1939 Communications.
 Adjustable monitoring of vital engine parameters.
 Idle/rated speed setting.
 Programmable speed acceleration ramp rate.
 Adjustable cool down duration.
 Data link interfaces.
2.2.3. Description
The ECM is housed in an environmentally sealed casting. All wiring connections to the ECM
are made at the two sealed seventy-pin connectors.
ENGINE SPEED GOVERNING - Desired engine speed is calculated by the ECM and held
within ±0.2 Hz for isochronous and droop mode. The ECM accounts for droop that is
requested. The proper amount of fuel is sent to the injectors due to these calculations.
The ECM also employs cool down/shutdown strategies, acceleration delays on startup,
acceleration ramp times, speed reference and a low/high idle switch is also available via
communications to the EMCP 3.3 generator mounted local control panel.
FUEL LIMITING - Warm and cold fuel-air ratio control limits are controlled by the ECM.
Electronic monitoring system derates, torque limit, and cranking limit, programmable torque
scaling, and cold cylinder cutout mode are standard features.
FUEL INJECTION TIMING - Master timing for injection is controlled by the ECM control.
Temperature dependencies are accounted for in the fuel injection calculations.
ELECTRONIC MONITORING - Electronic monitoring of vital engine parameters can be
programmed. Warning, derate and shutdown event conditions may be customized by the
user.
INFORMATION MANAGEMENT -The ECM stores information to assist with electronic
troubleshooting. Active and logged diagnostic codes, active events, logged events, fuel
consumption, engine hours, and instantaneous totals aid service technicians when
diagnosing electronic faults and scheduling preventive maintenance.
CALIBRATIONS - Engine performance is optimized through injection timing. Auto/manual
sensor calibrations are standard features.
ON-BOARD SYSTEM TESTS - System tests are available to assist in electronic
troubleshooting. These tests include: injector activation, injector cutout, and override of
control outputs.