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6 OnCue Plus Generator
Management System
The APM kit includes two OnCuer activation codes to
allow the connection of both generator sets to the
OnCue Plus server.
Follow the instructions in the
OnCue Plus manuals to connect both generator sets to
OnCue.
The OnCue Plus Status view will show two generator
sets. See Figure 27. The secondary generator set can
monitor the RBUS devices such as the optional PIM, but
cannot control them.
Generator Set State
Synchronizing
Generator Management Off
Unloading
ProtectiveRelayTrippedContactor
Figure 26 Generator Set States Related to Paralleling
1
1. Two generator sets shown here
Figure 27 OnCue Plus Status View with Paralleled Generator Sets
26
Description
The generator is actively trying to match frequency, voltage and phase with that of the
paralleling bus.
This generator has been stopped by generator management because it is not
presently needed to supply the load. The generator is available and will start if it is
needed again.
The generator is actively trying to transfer load from itself to the other generator.
The contactor has been forced to open to protect one of the generators or the
customer's load.
The primary and secondary generator sets can be
changed using the RBUS settings on the RDC2
controllers or using SiteTecht software to change the
Modbus Master parameter. SiteTech version 3.5 or
higher is required.
described in Section 5.3.2 can also change the primary
and secondary designations.
The generator set states shown in Figure 26 are unique
to a paralleling system. The generator set state is
displayed in the power chain view as shown in
Figure 27.
The AUTO-OFF procedure
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