Output Voltage Monitor Circuit Calibration - Xantrex XHR 7.5-130 Operating Manual

Output
1. Ensure that the power supply is turned OFF. Disconnect any load.
Voltage
2. Connect a DVM across the power supply output to read the output voltage.
Monitor
3. Connect a second DVM to the rear panel J2 terminals 9 (output voltage monitor)
Circuit
Calibration
4. Turn the power supply ON.
5. Set the power supply output voltage to 1% of the model-rated output.
6. Adjust the output voltage monitor offset potentiometer (R78) until the monitor
7. Set the power supply output voltage to the model-rated maximum output.
8. Adjust the output voltage monitor range potentiometer (R99) until the monitor
Repeat this adjustment until the monitor signal is within the product specifications
as found in Section 1, or to the accuracy that your application requires.
Notes:
•
•
Revision A
and 6 (program/monitor signal return). See notes below.
DVM reads 1% of the readback scale. (50 mVdc for 0-5 Vdc readback or
100 mVdc for 0-10 Vdc readback.)
DVM reads 100% of the readback scale. (5 Vdc for 0-5 Vdc readback or 10 Vdc
for 0-10 Vdc readback.)
The recommended accuracy rating for the DVMs is four times better than your
desired readback accuracy.
Depending on the readback accuracy required in your application, you may use
the front panel voltmeter in place of the meter used to monitor the output of the
supply.
Calibration
Calibrating for Readback Accuracy
81