Current Limit Programming Circuit Calibration - Xantrex XFR 7.5-140 Operating Manual

Current Limit 1. Ensure that the power supply is turned OFF. Disconnect any load.
Programming
2. Connect the program source between J2 connector terminals 8 (output current
Circuit
limit programming input) and 7 (current program signal return).
Calibration
3. Connect the shunt and DVM across the power supply output.
4. Turn the power supply ON.
5. Apply 1% of program voltage.
6. Adjust the current limit program offset (R469) until the shunt/DVM indicates
1% of the model-rated output current. See Note.
7. Apply 100% of program voltage.
8. Adjust the current limit program range (R459) until the shunt/DVM indicates the
model-rated output current. See Note.
Repeat this procedure until output levels are adjusted to specifications (see
Section 1. Features and Specifications) or to the accuracy that your application
requires.
Note
the current, and R is the DC shunt resistance.
Release 3.1
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Calculate the required DVM reading using V= IR where V is the DVM reading, I is
Calibration
Calibrating for Programming Accuracy
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