HGM400N Series Genset Controller User Manual Page 8 of 38
4.2 PANEL INDICATION
Fig.1 Front Panel Indication
NOTE: Partial indicator illustration:
Alarm Indicator: slowly flash for warning alarms; fast flash for shutdown alarms; light off for none alarms.
Status Indicator: light off for genset stand by; flash 1 time per second in start or stop process and always light on for
normal running.
4.3 AUTOMATIC START/STOP OPERATION
Press and the indicator beside it is illuminated, which means genset is in auto start mode.
Auto Start Sequence:
1) HGM420N: when mains is abnormal (over/under voltage, loss of phase), genset enters into “Mains
Abnormal Delay” and LCD displays countdown time. “Start Delay” timer is initiated after the delay has
expired.
2) HGM410N: When “Remote Start” is active, “Start Delay” timer is initiated;
3) “Start Delay” countdown will be displayed on LCD;
4) When start delay is over, preheat relay is energized (if configured), “Preheat Delay XXs” information
will be displayed on LCD;
5) After the above delay, the Fuel Relay is energized, and then one second later, the Start Relay is
engaged. If the genset fails to fire during “Cranking Time”, then the fuel relay and start relay are
disengaged for the pre-set rest period; “Crank Rest Time” begins and genset will wait for the next
crank attempt.
6) This start sequence should continue beyond the set number of attempts, the start sequence will be
terminated, the fifth line of LCD display will be highlighted with black and Fail to Start fault will be
displayed.
7) In case of successful crank attempt, the “Safety On” timer is activated, low oil pressure, high
temperature, under speed, charge alternator failure and auxiliary input alarms (configured) are inactive.
As soon as this delay is over, “Start Idle” delay is initiated (if configured).
8) During “Start Idle” delay, under speed, under frequency, under voltage alarms are inhibited. When this
delay is over, “Warming up” delay is initiated (if configured).
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