42 Section 3 Controller TP-6844 1/13
3.7 Voltage Calibration
Testing live electrical circuits. Hazardous voltage or
current can cause severe injury or death. Have trained
and qualified personnel take diagnostic measurements of
live circuits. Use adequately rated test equipment with
electrically insulated probes and follow the instructions of the
test equipment manufacturer when performing voltage tests.
Observe the following precautions when performing voltage
tests: (1) Remove all jewelry. (2) Stand on a dry, approved
electrically insulated mat. (3) Do not touch the enclosure or
components inside the enclosure. (4) Be prepared for the
system to operate automatically. (600 volts and under)
Short circuits. Hazardous voltage/current can cause
severe injury or death. Short circuits can cause bodily
injury and/or equipment damage. Do not contact electrical
connections with tools or jewelry while making adjustments
or repairs. Remove all jewelry before servicing the
equipment.
The voltage can be calibrated using the controller
keypad and menus, or using a personal computer with
Kohler
®
SiteTech™ software.
3.7.1 Voltage Calibration using the
Controller Keypad
See Figure 3-18 and follow the procedure below to
calibrate the voltage using the controller keypad.
Note: A digital voltmeter is required for this procedure.
1. With the generator set off, connect a digital
multimeter to measure output voltage across TB3
+ and – terminals. Set the meter to measure DC
volts.
2. Start the generator set by pressing the RUN
button on the VSC controller.
3. Navigate to the Generator Metering menu and
press the Select button. Volts will be displayed.
4. Press the Select button. The voltage number will
flash.
5. Press the up or down arrow buttons to change
the voltage reading to match the reading on the
voltmeter.
6. When the correct voltage is displayed, press the
Select button.
7. Use the arrow buttons to step down to the Return
screen.
8. Pressing select when Reset Calibration is
displayed will discard the changes and reset the
calibration to the default settings.
9. Press OFF to stop the generator set.
Hazardous voltage. Moving parts.
Can cause severe injury or death.
Operate the generator set only when
all guards and electrical enclosures
are in place.
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