HMC6 Power Management Controller User Manual Page 16 of 87
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 disappeared during the delay, controller will judge that the genset stopped 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 failed to stop;
e) After genset failed to stop, if voltage and frequency signals are disappeared, controller will judge that the
genset stopped completely and entered into standby state.
Table 5 - System Modes Description
Start Condition & GOV/AVR Interface
Start the gensets externally, GOV input, GOV
output, AVR input and AVR output are active;
monitor all generator parameters.
Trip and stop the gensets externally.
Start the gensets by pressing the panel button,
GOV input and AVR input are deactivated; The
system will control GOV and AVR automatically.
Stop the gensets by pressing the “Stop”
panel button or there is “trip and stop”
alarm occurs.
If the system detects that there is no voltage
signal on busbar, the available diesel generator
units are started according to the start priority or
duty time (details please to see “Auto Start
Rules”). GOV input and AVR input are
deactivated; The system will control GOV and
AVR automatically.
Stop the gensets when there is “trip and
stop” alarm occurs.
In multiple gensets running system, the
system will shutdown if the load value
has fallen below the minimum set value.
In duty time start mode, genset will stop
when duty time is up. (details please to
see “Auto Start Rules”)
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