HGM7220N/HGM7220S GENSET CONTROLLER USER MANUAL
HGM7220N/HGM7220S Genset Controller 2019-02-28 Version 1.0 Page 43 of 60
NOTES:
a) Please change the controller parameters when generator is in standby mode (e. g. Crank disconnect conditions
selection, digital inputs, relay outputs, various delays), otherwise, shutdown and other abnormal conditions may
occur.
b) Upper limit value must be higher than lower limit value, for example, over voltage limit muse be higher than under
voltage limit, otherwise over voltage and under voltage conditions may occur simultaneously.
c) Over speed limit value must be higher than under speed limit value, otherwise over speed and under speed
conditions may occur simultaneously.
d) Please set return values correctly while setting warning alarms, otherwise, alarm fault may occur. Return value
needs to less than pre-set value while setting high warnings; Return value needs to be greater than pre-set value
while setting low warnings;
e) Please set the generator frequency value as low as possible when cranking, in order to make the starter be
separated quickly as soon as possible.
f) Auxiliary input 1~7 cannot be set as same items; otherwise, there are abnormal functions. However, the auxiliary
output 1~6 can be set as same items.
9.3 LANGUAGE SELECTION
Chinese, English, and other languages can be optional, and other language of default is Spanish.
9.4 EVENT LOG
Max 99 pieces of historical records can be checked via this item.
9.5 CONTROLLER INFORMATION
a) LCD will display development information of controller like software version, issue date of the
controller.
b) In this screen, press and it shall display the digital inputs and outputs status.
c) In this screen, press and it shall display boot screen.
9.6 TIME SETTING
In this page, time & data information of controller can be calibrated.
9.7 CYCLE START SETTING
In this page, enable cycle start gen-sets can be set. Users can configure the main/standby set
and genset running time.
9.8 BATTERY UNDER VOLTAGE START SETTING
In this page, battery under voltage start enable, start/stop values and delay values can be set.
10 GENSETS CYCLE START
Cycle start means controlling two generator-sets circulatory start/stop. Two sets are connected via
CAN. Main set sends commands to control the backup set to start/stop and check fault status of
backup set. The priority unit can be configured through parameter settings or input port settings. It is
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