HGM9520N Genset Paralleled Controller User Manual Page 48 of 111
5.7
SHUTDOWN ALARMS
When controller detects shutdown alarms, it will send signal to open breaker and shut down the
generator. Users need to reset alarms manually.
Table 14 Shutdown Alarms
No
Type
Description
1
Emergency Stop
When the controller detects emergency stop signals, it will initiate a
shutdown alarm.
It is always detected.
2
Over Speed
When this is enabled, and the controller detects that the genset speed
is above the pre-set limit, it will initiate an alarm signal.
It is always detected.
3
Under Speed
When this is enabled and the controller detects that the genset speed is
below the pre-set limit, it will initiate an alarm signal.
It is detected after “warming up” and before “stop idle”.
4
Loss of Speed Signal
When the controller detects the genset speed is 0, it shall issue an
alarm signal.
It is detected after “safety on time” and before “ETS solenoid hold”.
5
Gen Over Frequency
When this is enabled, and the controller detects the genset frequency is
above preset limit, it shall issue an alarm signal.
It is detected always.
6
Gen Under Frequency
When this is enabled, and the controller detects the frequency is below
the preset limit, it shall issue an alarm signal.
It is detected after “warming up” and before “stop idle”.
7
Gen Over Voltage
When this is enabled, and the controller detects the genset voltage is
above preset limit, it shall issue an alarm signal.
It is detected always.
8
Gen Under Voltage
When this is enabled, and the controller detects the voltage is below the
preset limit, it shall issue an alarm signal.
It is detected after “warming up” and before “stop idle”.
9
Fail to Start
If the genset doesn’t start during the start attempts, the controller shall
issue an alarm signal.
10
Gen Over Current
When this is enabled, and the controller detects the genset current is
above preset limit, it shall issue an alarm signal.
It is detected always.
11
Negative Sequence
Current
When this is enabled, and the controller detects the unbalanced current
is above preset limit, it shall issue an alarm signal.
It is detected always.
12
Earth Fault
When this is enabled, and the controller detects the earth current is
above the preset limit, it shall issue an alarm signal.
It is always detected.
13
Reverse Power
When this is enabled, and the controller detects the reverse power
(negative) is above the preset limit, it shall issue an alarm signal.
