AMETEK XFR 2800 Watt Series - Manual (Page 86)

Calibration and Troubleshooting
5-8 TM-F2OP-C1XN-01
Output Current Monitor Circuit Calibration
To perform output current monitor circuit calibration:
1. Ensure that the power supply is turned OFF. Disconnect any load.
2. Set SW1 switch 6 OPEN to select 0-5 V output current monitor
range, CLOSED for 0-10 V.
3. Connect the shunt and DVM across the power supply output to read
the output current. Connect a second DVM between the rear panel J2
connector terminals 12 (output current monitor) and 11 (current
monitor signal return).
4. Turn the current control fully counter clockwise, then turn on the
power supply.
5. Set the power supply’s output current to 1% of the model-rated
output. See Note.
6. Adjust the output current monitor offset (R394) until the monitor
DVM indicates 1% of the readback scale. (50 mVdc for 0-5 V
readback or 100 mVdc for 0-10 Vdc readback.)
7. Set the power supply output current to the model-rated output.
8. Adjust the output current monitor range (R383) until the monitor
DVM indicates 100% of the readback scale. (5 Vdc for 0-5 V
readback or 10 Vdc for 0-10 Vdc readback.)
Repeat this procedure until the monitor signal is adjusted to power supply
specifications (see Appendix A, “Specifications”) or to the accuracy that
your application requires.
Note:Calculate the required DVM reading using V= IR where V is the
DVM reading, I is the current, and R is the DC shunt resistance.