TP-6734 5/10
25
Section 2 Operation
Code Fault
Warning (W) or
Shutdown (SD) Condition
Check
AF
Auxiliary fault
input
SD *
An optional customer-connected input is
closed.
Check customer-supplied equipment.
HE
High engine
temperature
SD *
Engine coolant temperature exceeds the
maximum temperature for more than
5 seconds. Function becomes active
after crank disconnect.
Check for blocked air inlets and
exhaust outlets.
LOP
Low oil
pressure
SD *
The LOP switch indicates low oil
pressure for more than 5 seconds.
Function becomes active 30 seconds
after crank disconnect (30 second
inhibit).
Note:
The low oil pressure shutdown
does not protect against low oil level.
Check the engine oil level regularly as
recommended in Section 3.
Check for leaks in the lubrication
system.
Check the oil level and add oil if the
level is low.
OC
Overcrank
SD
Three unsuccessful starting attempts.
Check the fuel supply, spark plug,
and battery.
Check for loose connections.
Contact an authorized
distributor/dealer for service.
Lr
Locked rotor
SD
No engine rotation is sensed during
cranking. Shuts down 3 seconds after
the fault is detected.
OF
Overfrequency
SD *
Governed frequency exceeds 110% of
the system’s frequency setpoint for more
than 5 seconds. Function becomes
active 10 seconds after engine start
(10 second inhibit).
Contact an authorized
distributor/dealer for service.
OS
Overspeed
SD *
Engine speed exceeds 115% of the
normal running speed for more than
0.3 seconds.
Contact an authorized
distributor/dealer for service.
US
Underspeed
SD *
Engine speed drops below 85% of the
normal running speed for more than
0.3 seconds.
Reduce the load.
Contact an authorized
distributor/dealer for service.
OU
Overvoltage
SD *
Output voltage exceeds 120% of the
system nominal voltage for more than
2 seconds.
Contact an authorized
distributor/dealer for service.
UF
Underfrequency
SD *
Governed frequency falls below 90% of
the system frequency setting for more
than 5 seconds, or 1 Hz below the
system frequency setting for more than
60 seconds.
Function becomes active 10 seconds
after engine start. (10 second inhibit).
Reduce the load and restart the
generator set.
Contact an authorized
distributor/dealer for service.
UU
Undervoltage
SD *
Output voltage falls below 80% of the
nominal system voltage for more than
10 seconds.
Reduce the load and restart the
generator set.
Contact an authorized
distributor/dealer for service.
HB
High battery
voltage
W
Engine starting battery voltage rises
above 125% of the battery voltage setting
for more than 10 seconds when the
engine is running. Not operative during
the engine crank cycle.
Clears when the battery voltage returns
to an acceptable level.
Check the battery rating and
condition.
Check the battery charger operation.
* Engine cooldown runs before shutting down.
(continued on next page)
Содержание 14/20RES
Страница 12: ...TP 6734 5 10 12 Service Assistance Notes...
Страница 44: ...TP 6734 5 10 44 Section 4 Troubleshooting Notes...
Страница 47: ......