Powerten D3 Series, Operation Manual

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5V Reference Calibration
The 5V reference for the front panel voltage and current control must be
calibrated first. Refer to Figure 4-6 for locations of components on the control
assembly.
a. With prime power removed, remove jumper J7 on all converter
assemblies.
b. Connect a digital multimeter (DMM) between E1 and E3 of the current
control potentiometer R32 on the control assembly.
c. Apply prime power to the power supply, and push the front panel switch to
the ON position.
d. Adjust potentiometer R29 until DMM across E1 and E3 indicates 5.000
VDC.
e. Remove prime power from power supply and wait 3 minutes (minimum) for
filter capacitors to discharge.
Converter Assembly Calibration
For proper results, the converter assemblies must be calibrated prior to the
calibration of control assembly A1. Refer to Figure 4-5 for locations of
components on the converter assembly.
Current Limit Calibration
1. Remove prime power to the power supply. Remove jumper J7 from
all converter assemblies not being calibrated. Leave jumper installed
on assembly to be calibrated.
2. Connect a load of minimum 5% heavier than full-rated power and a
DMM across external current shunt.
3. Rotate front panel voltage control fully clockwise.
4. Rotate front panel current control fully counterclockwise.
5.
Apply prime power to power supply, and push the front panel switch to
the ON position.
6. Rotate front panel current control fully clockwise or until DMM across
external current shunt indicates a maximum of 5% above the
converter assembly rated output current. (The converter assembly
rated output = the power supply rated output divided by the number of
converter assemblies.) For 10 kW models, there are three converter
assemblies. Adjust potentiometer R33 until the supply puts out 5%
over the rated current when the front panel current pot is fully
clockwise.
If the fault light lights before the output reaches 5% over the maximum
rating adjust the internal current limit. To adjust the internal current
limit set R54 so the fault light just goes off at 5% over maximum
rating.
M550001-01
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