HGM1780
Automatic
Genset Controller
ISSUE 2013-04-03
Version1.7
Page 17 of 24
HGM1780 Automatic Genset Controller
6.3 DEFINITION OF DIGITAL INPUTS (ACTIVE WHEN CONNECT TO
GND (B-)) (TABLE 3)
6.2 DEFINITION OF RELAY OUTPUTS (TABLE 2)
No.
Items
Description
0
Not used
Output is not active.
1
Common
Alarm
Includes all shutdown alarms and warning alarms. Warning
alarms are not self-latching, while shutdown alarms are and will
not disappear until they are reset.
2
Energized to
Stop
Suitable for the genset with stop electromagnet. The
electromagnet closes when stop idle is over. And opens when
EST delay is over.
3
Idle control
Used for machines that have idle mode. Closes during
cranking, disconnects during warming up, closes during stop
idle delay, disconnects after complete stop.
4
Preheat
control
It closes before starting and opens before starter is power on.
5
Closing
Gens
During normal operation of the generator, closes the breaker
6
Reserved
No.
Description
Notes
0
Digital
Inputs
Not Used
1
High
Temperature
Input
If these signals are activated after crank
disconnect,
shutdown
alarm
will
be
immediately initiated.
2
Low
OP
Warning
Input
3
Reserved
Only warning and not stops if this input is
active.
4
Auxiliary Shutdown
Shutdown alarm will be immediately
initiated if this input is active.
5
High
Temperature
Stop Input
When the gen-set is working normally and
this signal is activated, if there is a high
temperature situation, the controller will first
cool down the generator and then stop it; if
the signal is deactivated and a high
temperature situation occurs, the controller
will shut down the gen-set without cooling
down.
6
Reserved
7
Reserved
8
Fuel Level Sensor
See Table 4.
