| Magnetic Pickup (MPU) Failure Pre-Alarm | If the speed signal source is selected for MPU/GEN via BESTCOMS, a pre-alarm will be annunciated when the MPU fails. | |
| High Coolant Temperature Pre-Alarm | If engine coolant temperature increases above the high coolant temperature pre-alarm setpoint programmed by the BESTCOMS software for the programmed delay time, a pre-alarm occurs. | |
| Low Coolant Temperature Pre-Alarm | If engine coolant temperature decreases below the low coolant temperature pre-alarm setpoint programmed by the BESTCOMS software for the programmed delay time, a pre-alarm occurs. | |
| Weak Battery Pre-Alarm | If the battery voltage drops below 60% of the nominal voltage for more than 2 seconds during engine cranking, a pre-alarm occurs. The message, WEAK BATTERY is displayed in the alternate display mode and is reset by scrolling through the alternate display. | |
| Low Battery Voltage Pre-Alarm | If the battery voltage decreases below the low battery voltage value programmed by the BESTCOMS software, a pre-alarm occurs. | |
| Battery Overvoltage Pre-Alarm | If the battery voltage exceeds the battery over voltage level programmed by the BESTCOMS software, a pre-alarm occurs. | |
| Low Fuel Level Pre-Alarm | If the fuel level decreases below the low fuel level pre-alarm value programmed by the BESTCOMS software, a pre-alarm occurs. | |
| Engine Overload Pre-Alarm | If the engine load exceeds the engine overload level pre-alarm value programmed by the BESTCOMS software, a pre-alarm occurs. | |
| Battery Charger Failure Pre-Alarm | If a battery charger failure is detected via the battery charger fail contact input, a pre-alarm occurs. | |
| Maintenance Pre-Alarm | When the next scheduled maintenance timer reaches zero hours, a pre-alarm occurs. After the required maintenance is performed, the pre-alarm can be cleared either from BESTCOMS or the front panel. | To clear the pre-alarm from the front panel, go to the alternate display mode and scroll to the screen that displays HRS TO NEXT SERVICE. Pressing the Select/Enter button while on this screen will clear the maintenance pre-alarm and reset the maintenance timer back to its programmed starting value. |
| Active DTC Pre-Alarm | When CAN Bus and DTC Support are both enabled, an 'active DTC' pre-alarm may be enabled from BESTCOMS to announce the presence of a current condition that is causing a diagnostic trouble code to be sent to the DGC-1000 from the ECU. | |
| CAN Bus Pre-Alarm | A CAN Bus Failure annunciation may be enabled only when the CAN interface is enabled. The CAN interface is configurable from BESTCOMS. When configure to alarm, annunciation occurs when CAN communication is lost either by the unit becoming disconnected from the ECU or the ECU malfunctioning. | |
| MTU MDEC ECU Pre-Alarms | A DGC-1000 connected to a genset equipped with an MTU MDEC engine controller is capable of announcing a set of pre-alarms unique to the MDEC ECU. Pre-alarms issued by the MDEC ECU can be viewed on the MTU MDEC tab of the BESTCOMS Metering screen or through the alternate display mode of the front panel display. | |
| HIGH ECU TEMPERATURE | This pre-alarm is annunciated when excessive temperature is detected within the ECU. | |
| HIGH OIL TEMPERATURE | This pre-alarm is annunciated when the MDEC ECU detects excessive engine oil temperature. | |
| HIGH INTERCOOLER TEMP | This pre-alarm is annunciated when the MDEC ECU detects excessive coolant temperature in the engine aftercooler. | |
| HIGH CHARGE AIR TEMP | This pre-alarm is annunciated when the MDEC ECU detects excessive turbocharger air temperature. | |
| HIGH COOLANT TEMP | This pre-alarm is annunciated when the MDEC ECU detects excessive engine coolant temperature. The trigger for this alarm is controlled by the ECU and operates independently of the DGC-1000 high coolant temperature pre-alarm setting. | |
| SS OVERRIDE ON | This pre-alarm is annunciated when the MDEC ECU broadcasts an override pre-alarm. | |
| HIGH FUEL RAIL PRESS | This pre-alarm is annunciated when the MDEC ECU detects excessive pressure in the engine's fuel rail. | |
| LOW FUEL RAIL PRESS | This pre-alarm is annunciated when the MDEC ECU detects low pressure in the engine's fuel rail. | |
| LOW COOLANT LEVEL | This pre-alarm is annunciated when the MDEC ECU detects low engine coolant level. | |
| LOW CHARGE AIR PRESS | This pre-alarm is annunciated when the MDEC ECU detects low air pressure at the output of the engine turbocharger. | |
| LOW FUEL DELIV PRESS | This pre- | |
| Overcrank Alarm | When the crank timer times out, cranking terminates. | |
| Overspeed Alarm | If the engine speed exceeds the overspeed value programmed by BESTCOMS and continues until the programmed delay time expires. | |
| High Coolant Temperature Alarm | If the engine coolant temperature exceeds the level programmed by the BESTCOMS software. | |
| Low Oil Pressure Alarm | If the oil pressure decreases below the low oil pressure alarm setting programmed by the BESTCOMS software. | |
| Engine Sender Fault Alarm | If a failure of an engine sender (transducer) is enabled by the BESTCOMS software and a failure occurs, or if a short circuit is detected across the fuel level transducer/fuel leak detector input. | |
| Low Fuel Level Alarm | If the fuel level decreases below the low fuel level alarm setting programmed by the BESTCOMS software. | |
| Low Coolant Level Alarm | This alarm stops the engine when a loss of coolant is detected via the low coolant level contact input. | |
| CAN Bus Alarm | A CAN Bus Failure annunciation may be enabled only when the CAN interface is enabled. The CAN interface is configurable from BESTCOM. When configured to pre-alarm, annunciation occurs when CAN communication is lost either by the unit becoming disconnected from the ECU or the ECU malfunctioning. If CAN communication is lost and the annunciation is configured as an alarm, then a normal alarm sequence will occur. | |
| MTU MDEC ECU Alarms | A DGC-1000 connected to a genset equipped with an MTU MDEC engine controller is capable of annunciating a set of alarms unique to the MDEC ECU. | |