TP-6694 7/18 37Section 2 Operation
Note: The transient start/stop function of the controller
prevents accidental cranking of the rotating engine.
The generator set stops and recranks when the
OFF/RESET button is momentarily pressed and
then the RUN button is pressed.
Auto Starting
Press the master control AUTO button to allow startup
by the automatic transfer switch or remote start/stop
switch (connected to controller terminals 3 and 4).
Terminals 3 and 4 connect to a circuit that automatically
starts the generator set crank cycle when an external
source closes the circuit.
Note: The controller provides up to 30 seconds of
programmable cyclic cranking and up to
60 seconds rest with up to 6 cycles. The default
setting is 15 seconds cranking and 15 seconds
rest for 3 cycles. Make cyclic cranking
adjustments using SiteTecht software.
Prime Power Switch
The controller has an optional prime power mode of
operation. The prime power mode requires installation
of an optional prime power switch kit. See Section 6,
Accessories, for instructions on how to install the
optional prime power switch kit. The prime power switch
kit prevents engine starting battery drain when the
generator set is shut down and no external battery
charging is available.
Move the prime power switch located on the junction box
to the CONTROLLER ON position before attempting to
start the generator set. When the prime power mode is
off, all controller functions including the digital display,
LEDs, and alarm horn are operative.
Stop the generator set using the stopping procedures in
Section 2.4.2 before placing the generator set in the
prime power mode. Move the prime power switch
located on the junction box to the CONTROLLER OFF
position. When the generator set is is the prime power
mode, all controller functions including the d igital
display, LEDs, alarm horn, and communications are
inoperative.
2.4.2 Stopping (User Stopping and
Fault Shutdown)
Normal Stopping
Run the generator set without load for 5 minutes to
ensure adequate engine cooldown.
The controller has a programmable cooldown timer that
functions only when the master control button is in the
AUTO mode. To stop the generator set, press the
generator set master control OFF/RESET button and
wait until the generator set comes to a complete stop.
Note: The cooldown cycle times out before the
generator set stops when a remote switch or
automatic transfer switch initiates the generator
set start/stop sequence.
Emergency Stopping
Use the controller emergency stop switch or optional
remote emergency stop for immediate shutdown.
The emergency stop switch bypasses the time delay
engine cooldown and immediately shuts down the
generator set.
Note: Use the emergency stop switch(es) for
emergency shutdowns only. Use the generator
set master control OFF/RESET button for normal
shutdowns.
The controller fault lamp lights and the unit shuts down
when the local or remote emergency stop switch
activates.
2.4.3 Emergency Stop Switch Resetting
Use the following procedure to reset the generator set
after shutdown by a local or remote emergency stop
switch. Refer to Section 2.4.8, Controller Resetting
procedure, to restart the generator set following a fault
shutdown.
1. Investigate and correct the cause of the
emergency stop.
2. Reset the optional remote emergency stop switch by
replacing the glass piece, when equipped. Additional
glass rods are available as a service part. Reset the
controller emergency stop switch by pulling the
switch dial outward.
3. Press the generator set master control
OFF/RESET button.
4. After resetting all faults using the controller reset
procedure in Section 2.4.8, press the generator set
master control RUN or AUTO button to restart the
generator set. The generator set will not crank until
the r eset procedure completes.
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