Prime Power Mode Operation; Fault Shutdowns - Kohler 40COZ/33CFOZ Service Manual

Note: The generator set continues running during
a 5-minute cooldown cycle if a remote
switch or automatic transfer switch signals
the engine to stop.
Emergency Stopping
Move the generator set master switch to the
OFF/RESET position or activate the remote emergency
stop, if equipped, for immediate shutdown.
controller AUXILIARY lamp lights and the generator set
shuts down on activation of the emergency stop switch.
The remote annunciator and/or A/V alarms, if equipped,
signal an emergency stop.
2.7.6

Prime Power Mode Operation

The Decision-Makert 3+ controller operates in either
the normal mode or the prime power mode. In prime
power mode, the controller draws less current,
minimizing the battery drain. Consider using the prime
power mode for installations that do not have a battery
charger.
Moving the generator set master switch to the
OFF/RESET position disables all controller functions.
Moving the generator set master switch to the AUTO
position restores controller functions.
Enabling and Disabling the Prime Power Mode.
Enable the prime power mode by connecting jumpers
across the following terminals on terminal strip TB2 on
the controller circuit board:
D
TB2-1P and TB2-2P
D
TB2-3P and TB2-4P
D
TB2-3 and TB2-4
See Figure 2-4. Remove the jumpers listed above to
disable the prime power mode.
Prime Power Starting.
provides local starting only at the controller. When the
generator set master switch is in the OFF/RESET
position, the controller functions are inoperative. Move
the generator set master switch to the AUTO position to
start the generator set. Do not start the generator set
with the master switch in the RUN position because the
alarm horn sounds.
Note: Move the generator set master switch to the
AUTO position to return controller functions to
normal.
Prime Power Stopping.
master switch to the OFF/RESET position to stop the
generator set and power down the controller.
TP-5737 5/01
The
The prime power mode
Move the generator set
2.7.7

Fault Shutdowns

The generator set shuts down automatically under the
following fault conditions and cannot be restarted until
the fault condition is corrected.
automatically resets when the problem is corrected or
the generator set cools (if high engine temperature was
the fault).
Name
High engine Shutdown occurs 5 seconds after
temperature the fault. The high engine
temperature shutdown does not
function during the first 5 seconds
after startup.
NOTE: The high temperature
shutdown functions only when the
coolant level is in the operating
range.
High exhaust Shutdown occurs 5 seconds after
temperature the fault. The high exhaust
temperature shutdown does not
function during the first 5 seconds
after startup.
Low coolant level Shutdown occurs 5 seconds after
(water-cooled fault. The low coolant level
engines only) shutdown does not function during
the first 5 seconds after startup.
Low oil pressure Shutdown occurs 5 seconds after
the fault. The low oil pressure
shutdown does not function during
the first 5 seconds after startup.
NOTE: The low oil pressure
shutdown does not protect against
low oil level. Check the engine oil
level.
Overcrank Shutdown occurs after 45 seconds
of continuous cranking or 75
seconds of cyclic cranking (crank
15 seconds, rest 15 seconds,
crank 15 seconds, etc.).
Overspeed Shutdown occurs immediately
when governed frequency on 50
and 60 Hz models exceeds 70 Hz.
Overvoltage The generator set shuts down and
(optional) the auxiliary lamp lights when
voltage is 15% or more over the
nominal voltage for 2 seconds or
longer.
NOTE: Overvoltage can damage
sensitive equipment in less than
one second. Install separate
overvoltage protection on on-line
equipment requiring faster
shutdown.
The system
Description
x:op:005:007
Section 2 Operation 11