Powerten D3 Series, Operation Manual

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5. Rotate front panel voltage control clockwise until DMM indicates 5.000
VDC between J1-6 and J1-8.
6. Adjust R37 until output voltage reading is 100% of rated output
voltage DC between the output terminals of the power supply.
7. Remove power from power supply.
8. Remove DMM from power supply terminals.
Meter Calibration
1. Meter Zero Calibration. If zero calibrations in the converter and
control assemblies are set properly, the zero set for both voltage and
current front panel meters is automatic.
(a) If meters do not read zero, check the output voltage. If there
is some voltage present across output bus bars, turn R26 on the
control assembly until output voltage is zero.
(b) If meters do not read zero even though no voltage is present on
the output bus bars, turn R36 on the converter assemblies for
current meter and R39 on control assemblies for the voltage
meter until both meters read zero.
2. Meter Full-Scale Calibration. The full-scale adjustment for the digital
panel meters U1 and U4 is adjusted by R6 and R11, respectively. R6
is for full-scale voltage meter calibration, and R11 is for full-scale
current meter calibration. Both resistors are accessible from inside
the power supply with the cover removed.
To calibrate for full-scale voltage or current, adjust the power supply
to maximum rated output voltage (or current) using external calibrated
meters and adjust the appropriate meter to correspond to the rated
output voltage or current.
Overvoltage Trip Level Calibration
The overvoltage trip level is calibrated by adjusting potentiometer R43 on
the control assembly A1. This setting can be viewed on the voltage
display monitor by pressing the front panel switch S1. The factory setting
for the overvoltage trip level is approximately 10% above the rated output
voltage.
M550001-01 4-11