HGM4020DC GENSET CONTROLLER USER MANUAL
HGM4020DC Genset Controller Version 1.0 2019-04-10 Page 9 of 31
4.3.3 AUTO STOP SEQUENCE
a) If pre-set start conditions cannot be satisfied, “stop delay x s” will be started.
b) When stop delay is over, “cooling time x s” is started, and rectifier output is closed;
c) When “stop idle x s” (if configured) starts, idle speed relay is energized;
d) When “ETS hold time x s” starts, ETS relay is energized. Fuel relay output is deactivated;
e) When “wait stop x s” starts, the controller automatically detects whether the genset stops completely;
f) When genset stops completely, it enters standby status; If genset fails to stop, controller will initiate
“failed to stop warn” alarm (“fail to stop warn” is displayed on LCD).
4.4 MANUAL START/STOP OPERATION
a) Manual Start: Press and controller enters Manual Mode. A LED besides the button will be
illuminated; In this mode, press button to start the genset, and controller shall automatically judge
crank success and accelerate to high speed running. If low oil pressure, over speed and abnormal
voltage occurs during genset running, controller can effectively protect genset to stop (for detailed
procedures please refer to No.b~g of Auto start sequence). When genset goes into normal running, the
controller shall control rectifiers to output.
b) Manual Stop: Press key and it can stop the running genset. (for detailed procedures please refer
to No.b~f of Auto stop sequence)
4.5 EMERGENCY START UP
Simultaneously press and in manual mode and tit can force generator to crank. At this
time, successful start will not be judged according to crank disconnect conditions, but operator will have
to control crank disconnect manually; when operator observes that the engine has fired, he/she should
release the button and start output will be deactivated, safety on delay will be initiated.
4.6 GENERATOR AUTO START CONDITIONS
There are 6 generator auto start conditions. Genset will start up in case any one condition is satisfied;
after genset is started automatically, if corresponding stop condition is reached, genset will stop.
Table 4 – Start Conditions
Corresponding Stop Conditions
Genset will start when mains
is abnormal.
Genset will stop when mains is
normal.
Genset will start when
remote start signal is active.
Genset will stop when remote start
signal is deactivated.
Genset will start when its
stop time is over cyclic stop
time (single unit cycle).
Genset will stop when normal
running time is over cyclic start time
(single unit cycle) .
Genset will start when
scheduled start timer is due.
Genset will stop when scheduled
running timer is overdue.
Mains Fail And Pile
Under Volt Start
Genset will start when mains
is abnormal and battery
voltage is lower than the
pre-set limit of battery pack.
If mains is normal, battery pack
charging time reaches to charging
complete time or complied with
selected stop conditions, genset will
stop.
Mains Fail And Room
Temp High Start
Genset will start when mains
is abnormal and machine
room temperature is higher
than the setting temperature
upper limit.
Genset will stop when mains is
normal and machine room
temperature is under the setting
temperature lower limit.
4.7 STOP CONDITIONS SELECTION
When mains is abnormal and pile is under voltage, genset will be started. If mains goes back to
normal status and battery pack charging time reaches to charge completion time or complied with
selected stop conditions, genset will stop.
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