HGM9510 GENSET PARALLEL UNIT 
HGM9510 Genset Parallel Unit ISSUE 2013-08-06     Version 1.1 Page 20 of 65 
When the controller detects that the breaker close or open failure 
occurs,  and  the  action  select  “Warn”,  it  will  initiate  a  warning 
alarm. 
Temperature Sensor 
Open Circuit 
When the controller detects that the temperature sensor is open 
circuit and the action select “Warn”, it will initiate a warning alarm. 
When  the  controller  detects  that  engine  temperature  has 
exceeded the pre-set value, it will initiate a warning alarm. 
When  the  controller  detects  that  engine  temperature  has  fallen 
below the pre-set value, it will initiate a warning alarm. 
Oil Pressure Open 
Circuit 
When the controller detects that the oil pressure sensor is open 
circuit and the action select “Warn”, it will initiate a warning alarm. 
When the controller detects that the oil pressure has fallen below 
the pre-set value, it will initiate a warning alarm. 
Level Sensor Open 
Circuit 
When the controller detects that the level sensor is open circuit 
and the action select “Warn”, it will initiate a warning alarm. 
When the controller detects that the fuel level has fallen below the 
pre-set value, it will initiate a warning alarm. 
Flexible Sensor 1 
Open Circuit 
When  the  controller  detects  that  the  flexible  sensor  1  is  open 
circuit and the action select “Warn”, it will initiate a warning alarm. 
When the controller detects that the sensor 1 value has exceeded 
the pre-set value, it will initiate a warning alarm. 
When  the  controller  detects  that  the  sensor  1  value  has  fallen 
below the pre-set value, it will initiate a warning alarm. 
Flexible Sensor 2 
Open Circuit 
When  the  controller  detects  that  the  flexible  sensor  2  is  open 
circuit and the action select “Warn”, it will initiate a warning alarm. 
When the controller detects that the sensor 2 value has exceeded 
the pre-set value, it will initiate a warning alarm. 
When  the  controller  detects  that  the  sensor  2  value  has  fallen 
below the pre-set value, it will initiate a warning alarm. 
When digit input port is set as warning and the alarm is active, it 
will initiate a warning alarm. 
If earth fault detection is enabled, when the controller detects that 
the  earth fault  current  has  exceeded  the pre-set  value  and  the 
action select “Warn”, it will initiate a warning alarm. 
Negative Sequence 
Current 
When the controller detects the imbalance current has exceeded 
the  pre-set  value  and  the  action  select  “Warn”  it  will  initiate  a 
warning alarm. 
When the controller does not detect synchronization signal within 
the pre-set synchronization time, it will initiate a warning alarm. 
When the controller detects fewer modules on the MSC link than 
the minimum number configured in the unit, it will initiate a warning 
alarm.  There  are  2  possible  reasons:  a)  Communication  line 
between  the  controllers  disconnects,  which  interrupts 
communication. 
b) Other parallel gen-sets controllers have not been powered on.   
When  the  controller  detects  that  the  genset  negative  reactive 
power has  exceeded the  pre-set value,  it  will initiate  a warning 
alarm.