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5.4 AUTO START/STOP OPERATION
Auto mode is selected by pressing the
operation.
Automatic Start Sequence:
1)
When "Remote Start" is active, "Start Delay" timer is initiated;
2)
"Start Delay" countdown will be displayed on LCD;
3)
When start delay is over, preheat relay energizes (if configured), "preheat delay XX s" information will be
displayed on LCD;
4)
After the above delay, the Fuel Relay (if configured) is energized, and then one second later, the Start Relay
is engaged. The engine is cranked for a pre-set time. If the engine fails to fire during this cranking attempt
then the fuel relay and start relay are disengaged for the pre-set rest period; "crank rest time" begins and
wait for the next crank attempt.
5)
Should this start sequence continue beyond the set number of attempts, the start sequence will be
terminated, and Fail to Start fault will be displayed on LCD alarm page.
6)
In case of successful crank attempt, the "Safety On" timer is activated, Low Oil Pressure, High
Temperature, Under speed and Charge Alternator Failure inputs are all inactive. As soon as this delay is
over, "start idle" delay is initiated (if configured).
7)
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).
8)
In the case of a single generator system, after the "warming up" delay, if generator status is normal, its
indicator will be illuminated. If generator voltage and frequency have reached on-load requirements, then
the generator close relay will be energized; genset will take load; generator power indicator will illuminate
and generator will enter into Normal Running status. If voltage or frequency is abnormal, the controller will
initiate shutdown alarm (alarm information will be displayed on LCD).
9)
In case of running in parallel, after the warming up delay:
a) If bus has no voltage, then the controller will send a closing signal to other waiting parallel gensets and
generator close relay will activate, this prevents other sets in the system from attempting to close their
own breakers at the same time.
b) If bus has voltage or other gensets are already closed, the controller will adjust speed and voltage through
GOV and AVR to synchronize the gensets to the bus; when synchronism requirements has been achieved,
breaker close signal will be initiated and the genset will be paralleled with the bus. Once they are paralleled,
the controller will control the generator to gradually accelerate and share load with other paralleled
gensets.
NOTE: When started via "Remote Start (off Load)" input, same procedures as above but generator close relay deactivated,
moreover, genset off load. When started via "Remote Start (Demand)" input, the genset will start, synchronize, parallel and share
load automatically according to the pre-set priority order.
HGM9510 Genset Parallel Controller User Manual
button; a LED beside the button will illuminate to confirm the
Page 18 of 68
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