Kohler 48RCLC

64 TP-7203 4/23
7.5.2 Calibration Using SiteTech
Note:
Read all safety precautions at the beginning of the Voltage Calibration section before performing the calibration procedure.
Voltage calibration factors can be adjusted using SiteTech software to calibrate the RDC2 controller. Connect a personal
computer (laptop) to the controller using a USB cable and follow this procedure to use Kohler
®
SiteTech
™
software to calibrate
the controller.
The voltage calibration factors are located in the Genset Calibration group in SiteTech
™
. Find the parameter labelled Genset
Calibration Factor Voltage, L1- L2. See Figure 46.
Note:
A digital voltmeter is required for these adjustments.
1. With the generator set off, connect a digital multimeter to measure output voltage across L1 and L2. Set the meter to
measure AC volts.
2. Start the generator set by pressing the RUN button on the RDC2 controller.
3. Compare the voltage reading on the digital voltmeter to the voltage displayed by the controller.
4. If the voltage displayed on the controller does not match the measured voltage, use the equation in Figure 45 to calculate
a new value for Genset Calibration Factor Voltage, L1- L2.
5. Type the new value for Genset Calibration Factor Voltage, L1- L2 into SiteTech and click on Apply Changes.
See Figure 46.
6. Allow a few seconds for the controller to adjust to the new factor and then compare the voltmeter reading with the voltage
displayed on the controller.
7. If the voltage readings do not match, check your calculations. Check the calibration factor and both voltage readings again.
Repeat the procedure using the new values, if necessary.
Note:
If you would like to simplify the calculation, set the calibration factor to 1.0000 and then repeat the calibration procedure from
step 3.
8. Repeat the procedure for voltage across L2- L3 and L3- L1, if necessary. (Three-phase only.)
9. Press OFF to stop the generator set.
Figure 45 Voltage Calibration Factor
(V
meter
÷ V
control
) x F
old
= F
new
V
meter
= Voltmeter reading
V
control
= Voltage displayed on controller
F
old
= Genset Calibration Factor Voltage, L1- L2, from SiteTech before calibration
F
new
= New value to enter for Genset Calibration Factor Voltage, L1- L2, in SiteTech
Example:
Voltmeter reading: 241.2
Controller display: 240
Old calibration factor (from SiteTech): 1.0063
New calibration factor:
(241.2 ÷ 240) x 1.0063 = 1.0113