34 TP-7044 6/23
Gen Management Modes
The method that generator management uses to determine the starting and stopping order of the available generators. All the
generators in the system must have the same setting for this parameter for the generator management to operate. If this
parameter is changed, it will be updated on all the generators which are connected to the PGEN network. This parameter can
be set to one of the following:
• Manual/Fixed. The order of the generators is manually set. In this mode, the order is set once by the user.
Note:
The controllers require that the order be valid. If two nodes share a common order or there is a gap in the order
sequence, the controllers will attempt to re-sort the order until it is valid. If the order is not valid (automatic re-sorting
failed) generator management will be disabled (all generators will run all the time).
• Run Time. The generator management start/stop order is determined by the runtime hours on the generators. In this
mode, the order is determined to ensure that the generator with the fewest runtime hours is the last to stop. Each
subsequent order is assigned to generators with increasing runtime hours.
If a generator is not running, the system will add the Run Time Threshold to the runtime hours for that generator before
it considers it in the order—this allows the generators to avoid starting and stopping continuously. The actual runtime
will have to differ by more than the threshold to force the generator order to switch (the stopped generator will start,
synchronize to the paralleling bus, and begin sharing load—the running generator will soft-unload, disconnect from the
bus, cool down and stop).
The generator management order is not user adjustable in runtime mode.
Note:
If the load on the system requires an additional generator to start, the generator with the most runtime hours will always
be the first one to stop if the load decreases enough to permit it (the threshold is no longer taken into consideration as
soon as the generator is connected to the paralleling bus).
• Fuel Level. The generator management start/stop order of the generators is determined by the level of the fuel in the
tank which supplies each generator. In this mode, the order is determined to ensure that the generator with the most
fuel is the last to stop. Each subsequent order is assigned to generators with decreasing fuel percentage.
If a generator is running, the system will add the Fuel Level Threshold to the measured Fuel Level for that generator
before it considers it in the order. This allows the generators to avoid starting and stopping continuously. The actual
fuel level will have to differ by more than the threshold to force the generator order to switch (the stopped generator will
start, synchronize to the paralleling bus, and begin sharing load and the running generator will soft-unload, disconnect
from the bus, cool down and stop).
The generator management order is not user adjustable in Fuel Level mode.
Note:
Fuel Level Order Selection mode requires separate fuel tanks for the generators and fuel level senders connected to
the controller to operate. Operation of Fuel Level mode without sensors is not defined.
Note:
If the load on the system requires an additional generator to start, the generator with the lowest fuel level will always
be the one to stop (the threshold is no longer taken into consideration as soon as the generator is connected to the
paralleling bus).
Gen Management. Allows permanent disabling of the generator management on this generator. This parameter can be set
individually for each generator and will inhibit the Generator Management Configuration Mismatch Warning for this generator if
set to OFF.
Note:
Disabling the generator management on one generator in a paralleling system will not keep the other generators in the paralleling
system from alarming if the generator management configuration of any of the other nodes differs from the disabled generator.
Note:
Generators with Generator Management disabled are not taking into consideration for generator management on the other
generators. It is not recommended to disable any of the generators in a paralleling system where generator management is
intended to be used, the generator management may operate too many generators in these cases.
Generator management defaults to OFF. It should be enabled on all generators in the system if it is desired.
To Next Page
Loading...
Need help?
General
