Auxiliary Fault Lamp; Fuses; Analog Meters And Gauges - Kohler 20-2250 kW Operation

1.2.2

Auxiliary Fault Lamp

The auxiliary fault lamp flashes or lights continuously to
indicate different conditions. Figure 1-3 describes the
auxiliary fault lamp conditions.
Generator Condition
Auxiliary Delay Shutdown. Lamp lights and the engine shuts down 5 seconds after high oil temperature
(P1-13), low coolant level (P1-10 [2-wire sender] or P1-14 [3-wire switch]), or auxiliary delay shutdown
(P1-15) faults (if equipped) occur. These fault conditions are inhibited during the first 30 seconds after crank
disconnect.
Auxiliary Immediate Shutdown. Lamp lights and the engine shuts down if activated by customer-supplied
sensing devices connected to auxiliary immediate shutdown ports (P1-17 and P1-18).
Emergency Stop Switch Reset. Lamp lights if the optional emergency stop switch is reset while the
generator set master switch is in the AUTO or RUN position. Place the generator set master switch in the
OFF/RESET position to clear this fault.
Low Fuel Shutdown (125RZG only). Lamp lights and the engine shuts down if activated by the low fuel
pressure shutdown switch connected to the Auxiliary Immediate Shutdown port P1-17. Place the generator
set master switch in the OFF/RESET position to clear this fault.
No AC Output. Lamp flashes if the controller senses no AC output with the unit running (except during first
10 seconds after startup). When the controller senses AC output, the flashing stops and the lamp is unlit.
Does not require manual reset.
Overvoltage Shutdown. Lamp lights and the engine shuts down immediately if an overvoltage condition
arises (if equipped with overvoltage shutdown kit).
Underfrequency Shutdown. Lamp lights and the engine shuts down if the engine speed drops below 5% of
the nominal engine speed (1710 for 1800 rpm or 1425 for 1500 rpm) for a continuous 60-second period.
Figure 1-3 Auxiliary Fault Lamp Operation
1.2.3

Fuses

The fuses listed in Figure 1-4 protect the generator set
circuitry.
Fuse Description
F1 3-amp remote annunciator fuse protects the dry contact
kit (if equipped).
F2 3-amp controller fuse protects the controller circuit board,
speed sensor, and lamp circuit board.
F3 15-amp engine and accessories fuse protects
engine/starting circuitry and accessories.
Figure 1-4 Controller Fuses
TP-6161 1/12
1.2.4

Analog Meters and Gauges

Figure 1-5 describes the meters and gauges located on
microprocessor controllers.
Name Description
AC voltmeter Meter displays the AC output voltage. Use the
selector switch to choose the output lead
circuits.
AC ammeter Meter displays the AC output amperage. Use
the selector switch to choose the phase
currents.
DC voltmeter Meter displays the voltage of the starting
battery(ies).
Frequency Meter displays the frequency (Hz) of the
meter generator set output.
Hourmeter Hourmeter records the generator set total
operating hours for reference in maintenance
scheduling.
Oil pressure Gauge measures the engine oil pressure.
gauge
Scale lamps Lamps indicate which AC voltmeter and/or
(upper/lower) ammeter scales to read.
Water Gauge displays the engine coolant
temperature temperature.
gauge
Figure 1-5 Analog Meters and Gauges
Section 1 Specifications and Features
Lamp Illumination
Flashing Continuous
X
X
X
X
X
X
X
13