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8.2.3
Adjusting the Voltage, Gain, and
Volts/Hz
After setting the system voltage, check the output
voltage and adjust, if necessary, using the following
procedures. Follow the instructions in Figure 8-6 to
adjust the voltage, gain, and volts/Hz while the engine is
running.
An x in the Display column in Figure 8-6
indicates a number from 0 to 9. Use the up arrow to
increase a setting or the down arrow to decrease the
setting.
Note: Save
your
settings
configuration mode.
Pressing the Select button when SAVE is displayed
returns to the first parameter, voltage adjust (1P).
Voltage changes are lost if they are not saved before the
generator set shuts down. The generator set continues
to run with the new settings until it shuts down but then
reverts to the previous settings at the next startup if the
changes have not been saved.
Note: A digital multimeter is required for these
adjustments.
8.2.4
Voltage Adjustment
WARNING
Hazardous voltage.
Can cause severe injury or death.
Operate the generator set only when
all guards and electrical enclosures
are in place.
Short circuits.
Hazardous voltage/current can cause
severe injury or death. Short circuits can cause bodily injury
and/or equipment damage.
connections with tools or jewelry while making adjustments or
repairs. Remove all jewelry before servicing the equipment.
Grounding electrical equipment. Hazardous voltage can
cause severe injury or death. Electrocution is possible
whenever electricity is present.
breakers of all power sources before servicing the equipment.
Configure the installation to electrically ground the generator
set, transfer switch, and related equipment and electrical
circuits to comply with applicable codes and standards. Never
contact electrical leads or appliances when standing in water
or on wet ground because these conditions increase the risk of
electrocution.
TP-6335
9/04
before
exiting
the
Moving rotor.
Do not contact electrical
Open the main circuit
Voltage Adjustment Procedure
Note: Refer
to
Figure 8-6
instructions to adjust the voltage using the
ADC 2100.
1. With the generator set off, connect a digital
multimeter to the output leads or an electrical outlet
on the load side of the generator set. Set the meter
to measure AC voltage.
2. Start the generator set by moving the generator set
master switch to the RUN position.
3. Use the ADC controller to adjust the voltage
(parameter 1P) until the output voltage reaches the
desired value. See Figure 8-5 for the approximate
change in voltage per step in parameter 1P.
Measured
Voltage Change per Step, VAC
Voltage, VAC
V l
VAC
Coarse Adjust
85--132
180--251
Figure 8-5 Voltage Adjustment
4. Adjust the voltage stability (gain, parameter 2P) to
minimize light flicker.
5. Readjust the voltage, if necessary.
6. Readjust the voltage stability (gain, parameter 2P),
if necessary.
7. Readjust the voltage (parameter 1P), if necessary.
8. Stop the generator set.
and
Figure 8-7
Fine Adjust
5
0.5
7
0.7
Reconnection/Adjustments 29
for
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