TP-6109 6/03 15Section 2 Operation
2.7 Expanded Decision-Makert 1 Controller Operation
For identification of the expanded controller’s indicators and controls and their functions, refer to Figure 2-4.
1
10
11
12
13
ADV-5849E-B
7
8
9
2
3
4
5
6
1. Frequency meter
2. AC voltmeter
3. AC ammeter
4. Scale lamps (upper/lower)
5. Selector switch
6. Hourmeter
7. Generator set master switch
8. Voltage adjustment potentiometer
9. Fault lamp
10. 10-amp controller fuse
11. DC voltmeter
12. Water temperature gauge
13. Oil pressure gauge
Figure 2-4 Expanded Decision-Makert 1 Controller
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2.7.1 Controls and Indicators
The following table describes the controls and indicators
located on the controller.
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).
Fault lamp Lamp illuminates during engine
shutdown if the engine shuts down
because of one of the following faults:
high engine temperature, low water
level, low oil pressure, overcrank, or
overspeed. See Section 2.7.4, Fault
Shutdowns, for additional shutdown
information.
Frequency meter Meter displays the frequency (Hz) of
the generator set output.
Generator set
master switch
Switch functions as the controller
reset and generator set operation
switch.
Hourmeter Hourmeter records the generator set
total operating hours for reference in
maintenance scheduling.
Oil pressure
gauge
Gauge displays the engine oil
pressure.
Scale lamps
(upper/lower)
Lamps indicate which AC voltmeter
and/or ammeter scales to read.
Selector switch Switch selects the generator set
output circuits to measure. When
switched to a position with two circuit
labels, measure amperage on the
lead shown in the upper label and
measure voltage between the two
leads shown in the lower label. The
AC ammeter and voltmeter function
only with the switch in the ON
position.
Voltage
adjustment
potentiometer
Potentiometer fine-tunes (±5%) the
generator set output voltage.
Water
temperature
gauge
Gauge displays the engine coolant
temperature.
10-amp controller
fuse
Fuse protects the controller circuitry
from short circuits and overloads.
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