HGM9520N Genset Paralleled Controller User Manual Page 33 of 111
No
Type
Description
value is below the preset lower limit, it shall issue an alarm signal.
It is detected after “safety on time” before “ETS solenoid hold” when the
sensor is selected as temperature sensor and pressure sensor;
It is always detected when the sensor is selected as fuel level sensor.
51
Power Factor Low
When this is enabled and the controller detects that the generator
power factor has fallen below the pre-set limit, it will initiate an alarm
signal.
It is always detected.
52
THD High
When this is enabled and the controller detects that the THD has
exceeded the pre-set limit, it will initiate an alarm signal.
It is always detected.
53
Gen Volt Unbalance
When this is enabled and the controller detects that the voltage
unbalanced value has exceeded the pre-set limit, it will initiate an alarm
signal.
It is always detected.
5.4
SAFETY TRIP AND STOP ALARMS
When controller detects safety stop signals, it will open breaker after soft unloading and genset stops
after cooling. Users need to reset alarms manually.
Table 11 Safety Trip and Stop Alarms
No
Type
Description
1
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.
2
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”.
3
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”.
4
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.
5
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”.
6
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.
7
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”.
