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4.4 Sequence of Operation
The following sections describe the controller sequence
of operation during generator start, run, stop, and fault
shutdown modes.
Use this as a starting point for
controller and relay board fault identification. Refer to
the wiring diagrams in Section 7 to assist in the
troubleshooting procedure.
4.4.1
Starting the Generator Set
Local Starting
When the master switch is moved to the RUN position,
there is a delay of about 2 seconds before the controller
attempts to start the engine. The run relay energizes
and the run LED (1) turns on. The crank and flash relays
energize and the corresponding LEDs (2 and 3) turn on
0.5 seconds later. The controller display indicates the
crank cycle 1 code, CC 1.
The controller attempts to start the generator set three
times (three crank cycles, 7 seconds crank and 15
seconds off). If the generator set does not start in three
attempts, the system shuts down on an overcrank fault.
When the engine comes up to speed, the low oil
pressure switch contacts open.
Note: The controller circuit board prevents fault
shutdowns during startup until the crank
disconnect relay energizes.
The cyclic cranking cycle is programmed into the
controller's application code and is not adjustable in the
field.
The factory sets the cranking cycle for three cycles of
7 seconds on time and 15 seconds off time. If the
cranking cycle seems shorter than the factory setting,
check the engine starting battery.
Auto (Automatic) Starting.
When the master switch is set to the AUTO position, the
generator set starts when the remote start switch
contacts close momentarily.
The start sequence proceeds as described in
Section 4.4.1 above.
4.4.2
Running Sequence
When the engine speed reaches 750 rpm, the crank
relay deenergizes and the crank LED (3) turns off.
When the output voltage on leads 11 and 44 reaches
about 30 VAC, the flash relay deenergizes and the flash
LED (2) turns off.
TP-6391 9/08
4.4.3
Stopping the Generator Set
The following procedures describe the actions required
to stop the generator set.
Local Stopping
1. Run the generator set at no load for at least
2 minutes to ensure adequate engine cooldown.
2. Move the generator set master switch to the
OFF/RESET position. The run relay deenergizes
and the run LED (1) turns off. The generator set
stops.
Auto (Automatic) Stopping.
1. Run the generator set at no load for at least
2 minutes to ensure adequate engine cooldown.
2. With the generator set master switch in the AUTO
position, the generator set stops when the remote
start/stop switch contacts close momentarily.
Note: If the ADC 2100 is configured for a CAN gauge,
consult Figure 4-20 for power-down times.
Note: If the ADC 2100 is not configured for a CAN
gauge, the controller will power down after
48 hours (if the master switch is in the AUTO
position). If the generator has been started, the
controller will power down 48 hours after the
generator stops.
4.5 Faults
4.5.1
Shutdowns
Under the fault conditions listed in Figure 4-5, the
controller displays a fault code and the generator set
shuts down.
Always identify and correct the cause of a fault
shutdown before restarting the generator set. Refer to
Section 3, Troubleshooting, for instructions to identify
and correct the cause of the fault.
Move the generator set master switch to the
OFF/RESET position to reset the controller after a fault
shutdown. Then move the switch to the AUTO or RUN
position.
4.5.2
Warnings
The fault conditions listed in Figure 4-6 will cause the
controller to display a fault code but will not shut down
the generator set.
Section 4 Controller
25
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