Alpha Technologies ECM - Manual (Page 25)

25 TM 744-862-C0-003 Rev.C
Engine Control Module (ECM)
The ECM is capable of reporting 9 "Major" alarms, 8 "Minor" alarms and 2
"Notifications". The following are detailed descriptions of each.
Major Alarm:
A Major alarm indicates failure of a critical component or some other
situation (pad shear, for example) where the system either has gone off-
line, or system failure and/or shutdown is imminent. Major alarms
cause the engine to shutdown immediately and generally prevent further
operation. Most major alarms are latched by the ECM. A site check by
service personnel is required to repair the fault and clear the system.
Placing the RAS switch in the STOP position for three (3) seconds,
then switching back to AUTO will clear any latched alarms and start
the generator if the cause of the alarm has been corrected.
MAJOR ALARMS:
Low Oil Pressure (Latching)
Indicates engine oil pressure is below safe limits and operation of the
unit has been suspended. The alarm is cleared when the Reset
command is issued or when the manual stop switch is activated.
Engine Over-Temp
Indicates engine temperature has exceeded safe limits and operation of
the unit has been suspended. The alarm is reset when the engine
temperature falls below safe limits.
Engine Over-speed (Latching)
Indicates engine RPM has exceeded safe limits, and operation of the
unit has been suspended. The alarm is cleared when the Reset
command is issued or when the manual stop switch is activated.
Engine Over-Crank (Latching)
Indicates the failure of the engine to start when commanded to do so.
The alarm is cleared when the Reset command is issued or when the
manual stop switch is activated.
3.1 Alarms Classifications
Section 3, ECM Alarms and Notifications