Controller Fault Shutdown Functions - Kohler 8.5RES Service Manual

5.9.1 Controller Fault Shutdown
Functions
Check the operation of the fault functions programmed
in the ADC 2100 by performing the following tests. If the
ADC 2100 does not operate as described, check the
controller configuration settings; see Section 4.5.2.
Also check the controller wiring and connections.
Overspeed Shutdown
The overspeed setting is programmed into the ADC
controller and is not adjustable. Verify that the following
controller configuration parameters are set correctly for
your unit. See Section 4.5.2 and Figure 4-6 for the
settings.
D
System voltage/frequency parameter (UU)
D
Unit configuration parameter (UC)
D
Engine type parameter (EC)
D
Engine data input type parameter (ED)
WARNING
Hot engine and exhaust system.
Can cause severe injury or death.
Do not work on the generator set until
it cools.
Servicing the exhaust system.
severe injury or death. Do not touch hot engine parts. The
engine and exhaust system components become extremely
hot during operation.
Open the generator set output circuit breaker before
beginning the test. (See Figure 4-1 for the circuit
breaker location.)
Connect a DVM to measure the output frequency. Start
the generator set and manually adjust the engine speed
by moving the throttle linkage.
Note: Be carefull not to touch the hot silencer when
reaching in to adjust the throttle linkage.
52 Section 5 Component Testing and Adjustment
Hot parts can cause
Increase the engine speed (parameter 4P) to at least
115% of the rated engine speed, 69 Hz on 60 Hz models
or 58 Hz on 50 Hz models. Verify that the generator set
shuts down on an overspeed fault (OS).
overspeed shutdown does not operate, the generator
set should shut down on an overfrequency fault (OF)
after approximately 5 seconds.
If the controller does not indicate an overspeed fault
(OS), check the wiring to the magnetic pickup (red and
black leads, P1-17 and P1-29). Check the magnetic
pickup air gap and voltage output; see Section 5.8.4.
Low Oil Pressure (LOP) Shutdown
Connect a jumper wire from the LOP switch (lead 13) to
the generator set ground. Start the generator set. Verify
that the generator set shuts down after approximately
25--35 seconds of operation. Remove the jumper wire
from the LOP switch and ground. Start the generator set
and run it for at least 25--35 seconds to verify that the
generator set does not shut down.
Overcrank Shutdown
Disconnect the starter motor lead at the starter solenoid
(K20) terminal. Move the controller master switch to the
RUN position. Observe that the generator set simulates
cranking for 15 seconds and then rests for 15 seconds.
Check that the generator set shuts down after the third
crank/rest cycle.
High Engine Temperature Shutdown
Connect a jumper wire across coolant temperature
sensor (CTS) connections P1-8 and P1-9. Start the
generator set. Verify that the generator set shuts down
approximately 5 seconds after the generator set comes
up to speed. Remove the jumper wire.
generator set and run it for at least 30 seconds to verify
that the generator set does not shut down.
If the
Start the
TP-6196 5/04