Himoinsa

UNDERSPEED ALARM

UnclassifiedSpeed

What This Code Means

Pick up calculation is not available; Engine rotation speed is calculated through the genset frequency instead of the pick up; Overspeed alarm active; Immediate engine stop; Underspeed alarm active; Stop with engine cooling; Overload alarm active

Possible Causes

  • •The number of teeth of the gear is set to 0
  • •Rotation speed of the engine ring gear exceeds the maximum limits (Thresholds table parameter 11) during the stabilization time (alarms table parameter 23)
  • •Rotation speed of the engine ring gear is under the programmed minimum limits (Thresholds table parameter 12) during the stabilization time (alarms table parameter 26)
  • •Effective amperage value in any phase is superior to the maximum programmed overload limit (Thresholds table parameter 7) but under the maximum limit of short-circuit (Thresholds table parameter 8)

Suggested Actions

  1. 1Introduce the number of teeth of the gear in Thresholds table parameter 24 to activate the pick up calculation

Related Himoinsa Fault Codes

UNDERSPEEDOVERSPEED ALARMOVERSPEEDOVERLOADUNEXPECTED SHUTDOWNWARNING ATHERMAL PROTECTION ALARMSTOP FAILURE ALARMSTOP FAILURESTARTING FAILURESTART FAILURE ALARM
Browse all Himoinsa fault codes

ASK RUDY ABOUT THIS FAULT

Get a diagnosis walkthrough for UNDERSPEED ALARM on your specific Himoinsa unit — cited to the OEM manual, not a forum guess.

TRY IT FREE