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 4-7 for locations of components on the control
assembly.
a. With prime power removed, remove jumper J9 on the converter assembly.
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, converter assembly A2 must be calibrated prior to the
calibration of control assembly A1. Refer to Figure 4-3 for component locations
on the P62 converter assembly.
Current Limit Calibration.
1. With prime power removed, install jumper J9 on the converter
assembly.
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. Adjust potentiometer R64
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 R73 so the fault light just goes off at 5% over maximum
rating.
7. Once the converter is delivering 105% of rated current and the current
mode indicator on the front panel is illuminated, rotate R73
counterclockwise until the current mode indicator just extinguishes.
Do not adjust beyond this point.
M550001-01
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