KEPCO BOP-MG 1KW, Operator'S Manual

Page: 148 / 198

4-12
BOP-1K 111315
5. Selecting one of the above options begins calibrating the output. The screen describes the
function of the active keys:
•
!
- or clockwise rotation of the ADJUST control adjust the output by approximately 10
increments in the positive direction.
•
@
- or clockwise rotation of the ADJUST control while pressed adjusts the output by
one increment in the positive direction.
•
#
- or counterclockwise rotation of the ADJUST control adjusts the output by 10 incre-
ments in the negative direction.
•
$
- or counterclockwise rotation of the ADJUST control adjust the output by approxi-
mately 10 increments in the negative direction.
•
%
- Exits the active calibration and allows you to select other calibrations that are
required.
•
Y
- Increments the output D to A by 100, causing the output to increase.
•
U
- Decrements the output D to A by 100, causing the output to decrease.
4.4.2 CALIBRATION PROCEDURE USING LOCAL MODE
NOTES: 1. For ZERO calibration, adjust output to obtain value closest to zero.
2. For FULL SCALE calibration adjust the output to obtain the closest value above
(absolute value) the nominal full scale value.
3. Set the unit for local sensing with GND Network in (see Figure 4-1) and discon-
nect load from BOP output.
4. When adjustment is needed refer to PAR. 4.4.1, step 5.
1. From the power-up screen, press
%
to enter the General Setup menu, then highlight Cali-
bration and press
!
. Enter the password (see PAR. 3.2.4.3), and press
!
, The LCD
shows main calibration screen.
2. Press
!
- VOLTAGE,
!
- INTERNAL,
!
- ZERO to set the BOP to zero volts output.
Connect a Digital Voltmeter (DVM) to the BOP OUT S and COM S terminals to measure the
output voltage. Adjust the BOP output as needed until the DVM reads as close to zero as
possible within tolerance specified in Table 4-3 for VOLTAGE ZERO. Press
%
once.
3. Press
@
- POSITIVE. Measure the voltage output using the DVM. Adjust as needed until
the DVM reading is as close as possible above the nominal full scale value within the toler-
ance specified in Table 4-3 for +FULL SCALE VOLTAGE. Press
%
once.
4. Press
#
- NEGATIVE to set the BOP to maximum negative output voltage and adjust as
needed until the reading is as close as possible above the nominal full scale value within the
limits specified in Table 4-3 for –FULL SCALE VOLTAGE. Press
%
twice.
5. Press
$
- PROTECT,
@
- POSITIVE to adjust the maximum positive voltage protection
limit of the power supply while working in current mode. Adjust as needed until the reading is