Kohler 40COZ/33CFOZ Service Manual page 60

Function
Starting: Close the start/stop switch St ti Cl th t t/ t
between N and 47.
Note: Fault shutdowns are inhibited during
startup until K3 energizes.
Running: Generator winding 7--10 g
produces AC output. d AC t t
Note: K3 relay must obtain AC output
within 30 seconds or overcrank fault within 30 seconds or overcrank fault
occurs.
Stopping: Move the start/stop switch to Stopping: Move the start/stop switch to
open circuit between N and 47.
Fault shutdowns: Low oil pressure (LOP),
high engine temperature (HET) after the
engine operating temperature reaches
103_C (218_F), and high exhaust
temperature (ETS) (wet exhaust only) after
the exhaust temperature reaches the exhaust temperature reaches
88--102_C (190--215_F). Contacts close
5--8 seconds after reaching shutdown
level.
Note: The fault shutdown latches to keep
the fault lamp lit. Move the generator set
master switch to OFF/RESET.
Fault shutdown: Overspeed (OS).
Contacts close when engine speed
reaches shutdown level. Factory set at
70 Hz. 70 Hz
Note: The fault shutdown latches to keep
fault lamp lit. Move the generator set
master switch to OFF/RESET.
Fault shutdown: Overcrank (OC).
Contacts close on overcrank (locked rotor)
if the speed sensor signal is absent longer
than 30 seconds than 30 seconds.
Note: The fault shutdown latches to keep
the fault lamp lit. Move the generator set
master switch to OFF/RESET.
Figure 6-3 Relay Controller Sequence of Operation
46 Section 6 Decision-Makert 1 Controller Troubleshooting
Relay Contact
Relay
Normal Position
K2 Open
it h
K10
Open
or K5
K4 Open
K20 Open
g
K3 Closed
K4 Open
K2 Open
K1 Closed
K1 Closed
K1 Closed
Relay Contact
Energizes/Action:
Action
K2 relay and LED2 lights
K10 relay (with F-254717) or K5
relay (with E-254717, engine
Close components (fuel system, governor,
ignition, etc.), K4 relay, and LED4
lights
Hourmeter on Decision-Makert 1
and Decision-Makert 1 Expanded
controllers and engine gauges
Close (battery voltage, water temperature,
and oil pressure) on
Decision-Makert 1 Expanded
controllers
Close K20 relay
Close Starter motor
K3 relay and LED3 lights
Deenergizes K4 relay and LED4
Open
deenergizes
Open Deenergizes starter motor
Deenergizes K2 relay and LED2
deenergizes
Deenergizes engine components;
Open
generator set shuts down
K1 relay, LED1 lights, and fault
lamp
Deenergizes engine components;
Open
generator set shuts down
K1 relay, LED1 lights, and fault
lamp
Deenergizes engine components;
Open
generator set shuts down
K1 relay, LED1 lights, and fault
lamp
Deenergizes engine components;
Open
generator set shuts down
TP-5737 5/01