7.4.4 Load-dependent stop configuration
This configuration defines when the power management system (PMS) automatically stops gensets. The PMS stops gensets when
the section load decreases.
These parameters only apply to GENSET controllers in AUTO mode.
Hardware
Assign the hardware digital input under Configure > Input/output. Select a hardware module, then select a digital input to
configure.
Name I/O Type Details
Power management > Block load-
dependent stop
Digital input Continuous
Optional. The PMS prevents load-dependent stops in the
section while this input is activated.
Parameters
Configure the parameters under Configure > Parameters > Power management rules > Configuration # > Load-dependent
start/stop > Configuration (where # is 1 to 8) to define the overall load-dependent start and stop configuration.
Parameter
Range Default Notes
Power
selection
• Calculation in P
• Calculation in S
Calculation in
P
• Calculation in P: The calculations are based on the active power (P).
• Calculation in S: The calculations are based on the apparent power (S).
Method
• Power
• Percent
Power
• Power: The calculations are based on the PMS available active power in
kW, or the available apparent power in kVA.
• Percent: The calculations are based on the total consumed active (or
apparent) power as a percentage of PMS nominal active (or apparent)
power.
Note: The Percent method can be better if the genset sizes are very
different.
Configure the parameters under
Configure > Parameters > Power management rules > Configuration # > Load-dependent
start/stop > Stop 1 (where # is 1 to 8) to define the first set of stop parameters. By default, the PMS uses these parameters.
Parameter
Range Default Notes
Enable
Not enabled,
Enabled
Enabled
Not enabled: The PMS ignores this set of parameters.
Enabled: The PMS uses this set of parameters.
P available
limit
1 kW to 9 GW 200 kW
Calculation in P and Method = Power must be selected, otherwise this parameter is
ignored.
If this amount of PMS power would be available for the Delay period if a genset was
stopped, then the PMS stops a genset, according to the priority order.
S available
limit
1 kVA to 9 GVA 200 kVA
Calculation in S and Method = Power must be selected, otherwise this parameter is
ignored.
If this amount of PMS apparent power would be available for the Delay period if a
genset was stopped, then the PMS stops a genset, according to the priority order.
Load limit 1 to 100 % 70 %
Method = Percent must be selected, otherwise this parameter is ignored.
For the stop Load limit, the load percentage is the total power consumed, as a
percentage of the PMS nominal power that would be connected if a genset was
DESIGNER'S HANDBOOK 4189340911K UK Page 231 of 521
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