Manual

28 TT-1596 3/15
#
Auto-discovery
does not complete.
Check whether the
Automatic Paralleling
Module indicates that the
generator is closed to the
bus.
The wait for auto-discovery
can be as long as 30
seconds. After 30 seconds
expires, try to close the
contactor manually (jump L1
to the C wire on the coil).
Checkifitcloses.
YES
NO
Check if the generator
controller is seeing bus
voltage (look at L2-L3
voltage in SiteTech).
YES
Check that the APM is
recognized on RBUS.
Connection status of each
module can be found on the
front panel of the controller.
NO
Device may already have
auto-discovered to a different
contactor. Set the engine
model number select to a
different model and then set it
back. This will clear any
auto-discover information
stored in the controller .
YES
YES
Is the generator circuit
breaker tripped?
NO
The other generator is not in
OFF.
Reset the generator circuit
breaker.
Is the APM circuit breaker
tripped?
Reset the circuit breaker in
the APM.
Check for bad connections
between the generator and
APM. Pay special attention to
the Neutral connection.
Correct the connections.
NO
NO
YES
YES
YES
The controller thinks that the bus is live (will not close to a
live bus in auto-discovery mode). Check wiring between
the generator and the APM. Pay special attention to the V9
lead connection, as this is the bus sensing.
Check the RBUS connections
and follow RBUS
troubleshooting procedures if
module is not visible in the
list.
NO
YES
Press the OFF button on the other generator. Then start this
generator in run mode.
NO
YES
The controller has a fault or
warning.
Clear fault to retry. See Fault listing for additional information
on which faults inhibit breaker closure.
NO
YES
Controller is not running
paralleling code.
Load paralleling firmware RDC2_APM_###.#.bin onto both
generator set controllers and cycle power when complete.
Figure 30 Troubleshooting: Auto--discovery