KEPCO KLN 750W Series, Firmware Version 1.60 to 1.6x - Manual (Page 71)

KLN 750W 032614
4-3/(4-4 Blank)
18. Enter the new Voltage Deviation ratio by rotating encoder until Current display shows
desired setting for blinking digit. Tap encoder to go to next digit and repeat for all digits, then
press ENTER to confirm.
NOTE: If necessary to recalibrate, set Voltage Deviation Ratio to 1.000 and repeat Voltage
Calibration procedure.
19.Press SHIFT and ENTER keys to exit.
20.Turn off power to the unit, disconnect DVM and proceed to Current Calibration (PAR. 4.4).
4.4 CURRENT CALIBRATION PROCEDURE
NOTE: This procedure continues from step 20 of Voltage Calibration procedure above.
1. Verify power is off. Connect DVM to points “B” across shunt resistor terminals as shown in
Figure 4-1 and set switch SW1 to ON position.
2. Turn on power to the unit and press OUT key to enable the output.
3. Record current displayed on front panel.
4. Connect DVM to points “B” as shown in Figure 4-1, then measure voltage across shunt
(DVM reading) and use this value to calculate output current using I (Amperes) = E/R where
E is the voltage across the shunt (Volts) and R is the value of the shunt resistor (ohms).
Record calculated value.
5. Press OUT key to disable the output.
6. Use the menu to gain access to calibration (see PAR. 3.3.28) using password 5958.
7. Rotate encoder until the Voltage display shows Cur.r and the Current display shows the Cur-
rent Deviation Ratio setting in effect:
Current Deviation Ratio = measured output current/front panel reading
8. Calculate the new Current Deviation Ratio = (step 4 value)/(step 3 value).
9. Press ENTER key to access setting.
10. Enter the new Current Deviation Ratio by rotating encoder until Current display shows
desired setting for blinking digit. Tap encoder to go to next digit and repeat for all digits, then
press ENTER to confirm.
NOTE: If necessary to recalibrate, set Current Deviation Ratio to 1.000 and repeat Current
Calibration procedure.
11. Press SHIFT and ENTER keys to exit.
12.Turn off power to the unit, disconnect DVM and disconnect shunt.