INFO
Precautionary genset start does not start the emergency genset.
Precautionary genset start based on an input
If needed, assign the input under
Configure > Input/output
. Select the hardware module, then select the input to configure.
Table 7.6
Optional input
Function
I/O
Type
Details
Power management >
Precautionary genset start
Digital input Continuous
When this digital input is activated, the power management system
ensures that there is a running standby in the section.
INFO
You can wire this input to any GENSET controller(s) in the section.
Precautionary genset start in section digital output
If needed, assign the output under
Configure > Input/output
. Select the hardware module, then select the output to configure.
Table 7.7
Optional output
Function
I/O
Type
Details
Power management > Precautionary genset
start in section
Digital output Continuous
Activated when the precautionary genset start is active
in the section.
Precautionary genset start based on an alarm
When a controller activates a busbar voltage or frequency alarm, the power management system automatically starts the first
available genset in the priority order. However, the power management system does not connect the genset. The genset start is a
precaution, for rapid recovery if there is blackout, or if more power is needed.
By default, all the busbar alarms for a GENSET controller include the
Generator breaker open
inhibit. Therefore, only the connected
gensets activate busbar alarms, and thus a precautionary genset start. Note that the power management system starts only one
genset, even though there might be multiple busbar alarms.
Table 7.8
Voltage alarms that activate a precautionary genset start
Voltage alarms
Busbar over-voltage 1
Busbar over-voltage 2
Busbar under-voltage 1
Busbar under-voltage 2
Table 7.9
Frequency alarms that activate a precautionary genset start
Frequency alarms
Busbar over-frequency 1
Busbar over-frequency 2
Busbar under-frequency 1
Busbar under-frequency 2
DESIGNER'S HANDBOOK 4189340911K UK
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