The EMCP 3.1 is a generator-set controller. It is used on generator sets from Caterpillar and Olympian, including the 3512 TA, 3512B TA, 3512B-HD and 3516B TA.
| Display | LCD Display with adjustable contrast and backlight with auto power off |
|---|---|
| Analog inputs | AC metering: Volts 3-phase (L-L & L-N); Amps (per phase & average); Frequency; DC metering: Battery Volts; Engine Hours Run; Engine Jacket Water Temperature (in °C or °F); Lube Oil Pressure (in psi, kPa or bar); Engine Speed (rpm) |
| Protections | Fail to start shutdown, Low oil pressure shutdown, High engine temperature, Low / High battery voltage, Battery charger failure (if fitted), Underspeed / Overspeed, Loss of Engine Speed Detection |
| Symptom |
|---|
| Fail to start shutdown |
| Low oil pressure shutdown |
| High engine temperature |
| Low / High battery voltage |
| Battery charger failure (if fitted) |
| Underspeed / Overspeed |
| Loss of Engine Speed Detection |
Fault codes and symptom→remedy steps extracted from this controller’s service/owner documentation; verify against the official manual before servicing. Extracted directly from this controller's manual.
Used across brands: Caterpillar, Olympian
Also fitted to: Caterpillar Prime, Caterpillar Standby, Caterpillar XQ100 w/trailer, Caterpillar XQ80 w/trailer, Olympian D13P2, D13P2S, D17P2S, D18P2, D20P4, D20P4S.
| Code | Meaning |
|---|---|
| 21 | Fault shutdown |
| 22 | Fault alarm |
| 2301A Control | When the engine oil pressure is increased beyond the low oil pressure setpoint, the GSC will inform the governor that the engine speed should be increased from IDLE to RATED rpm. |
| g00604607 | The fault alarm indicator (3) flashes when the GSC detects an alarm fault. |
| Symptom | Cause | Remedy |
|---|---|---|
| Emergency stop condition | Operator presses the Emergency Stop Push Button (ESPB) on the front panel. | The emergency stop indicator FLASHES and the engine is shut down. The engine is not allowed to start until the condition is corrected. |
| Emergency stop indicator flashes, and the engine is shut down. | The operator presses the emergency stop push button (ESPB) on the front panel. | |
| Engine overcrank indicator flashes, and the engine is shut down. | The engine has been cranked for an extended period without starting. | Correct the condition by ensuring proper start-up procedures are followed. |
| Engine overspeed | Engine speed exceeds the setpoint for engine overspeed that is programmed into the GSC+. | The engine is shutdown and the engine is not allowed to start until the fault is corrected. |
| Engine overspeed indicator flashes, and the engine is shut down. | The engine speed exceeds a certain threshold set in the GSC+. | Correct the condition by addressing any issues that caused the engine to overspeed. |
| Generator parameters are not matched to the bus | If the generator and bus voltages, frequencies and phases are in sync, the lamps will light continuously. If not, the associated lamp will flash. | |
| High water temperature | Engine coolant temperature rises above the setpoint for high water temperature shutdown that is programmed into the GSC+. | The engine is shutdown and the engine is not allowed to start until the fault is corrected. |
| High water temperature indicator flashes, and the engine is shut down. | The engine coolant temperature rises above the setpoint for high water temperature shutdown that is programmed into the GSC. | |
| Low oil pressure | Engine oil pressure drops below the setpoints for low oil pressure shutdown that are programmed into the GSC+. | The tow oil pressure indicator FLASHES, and the engine is shut down. The engine is not allowed to start until the fault is corrected. |
| Low oil pressure indicator flashes, and the engine is shut down. | The engine oil pressure drops below the setpoints for low oil pressure shutdown that are programmed into the GSC. There are two low oil pressure setpoints. One setpoint is used when the engine is at idle speed. The other setpoint is used when the engine is at rated speed. | |
| Overcrank | Engine does not start within the setpoint for overcrank. | |
| The GSC+ detects a shutdown fault | The engine will shut down if the engine is running. The engine will not be allowed to start. | |
| The GSC+ detects an alarm fault | Fault alarm indicator (26) is accompanied by an alarm fault code that is shown on the upper display (29) when the alarm codes key (30) is pressed. |
Fault codes and symptom→remedy steps extracted from this controller’s service/owner documentation; verify against the official manual before servicing. Aggregated from the service documentation of generator sets built on this controller.