HPM6 Power Management Controller User Manual
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d)
If there are trip and shutdown fault alarms occur, the corresponding units are automatically started
to meet the load requirements;
e)
Linear start mode: if priority is disabled, priority changes will not affect loading genset, it will work in
next genset scheduling (current power is over than start power); if enabled and priority changes,
higher priority level standby genset will start;
f)
Duty time start mode: gensets will start according to the duty-hour.
Auto Start Sequence:
a)
Genset enters into “Start Delay” as soon as “Auto Start” is active;
b)
After the “Start Delay” has expired, the system enters into “Start Output Delay” while the start relay
will activate;
c)
When start delay is over, “Wait for Start Delay” will be initiated. “Fail to Start” block alarm will be
initiated if measured generator voltage and frequency do not reach the set value after start wait
delay is over;
d)
If crank disconnect conditions are satisfied in “Wait for Start Delay”, “Load Stable Delay” will be
initiated. “Frequency/Voltage Fault” block alarm and shutdown will be initiated if generator voltage
and frequency do not reach the set value after the “Load Stable Delay” has expired. It enters into
“Normal Running” status if the on-load requirement has been achieved;
e)
After controller entering into normal running state, and meanwhile on-load requirement has been
achieved (generator normal light will illuminate), genset will close and synchronize automatically;
f)
In case of multi-set operation after closing, genset will share load automatically;
g)
If there is trip alarm or shutdown alarm occurs, then the system will trip or shutdown and the alarm
information will be displayed on the LCD.
Auto Stop Rules:
a)
In multiple gensets running system, if the system detects that the load power has fallen below the
stop power, the controller will transfer load according to the start mode rules firstly and then open
breaker and shutdown;
b)
If there is trip alarm or shutdown alarm occurs, the fault genset will open breaker and stop;
c)
If there is safety trip alarm or safety shutdown alarm occurs, the fault genset will take off load and
open breaker to stop after new genset start up and on-load requirement of the bus is satisfied;
d)
Linear start mode: if priority is enabled and priority changes, after genset with higher priority takes
load, genset with lower priority will take off load and stop; if disabled, priority changes will not affect
loading genset, it will work in next genset scheduling (total load power is lower than stop power);
e)
Duty time start mode: gensets will stop according to the duty-hour.
Auto Stop Sequence:
a)
When stop input is activated in auto mode, system enters into “Stop Delay” state;
b)
After “Stop Delay” is expired, in case of multi-set operation, genset will open breaker after
transferring the load;
c)
After the switch is opened, the system enters into “Stop Output Delay” while the stop relay will
activate;
d)
After “Stop Output Delay” expired, system enters into “Wait for Stop Delay”, If genset voltage and
frequency signals disappear during the delay, controller will judge that the genset stops and in
standby state; otherwise, if genset voltage and frequency signals still can be detected after the
delay expired, controller will judge that the genset fails to stop;
e)
After genset fails to stop, if voltage and frequency signals are disappeared, controller will judge that
