AMETEK XFR 2800 Watt Series - Manual (Page 84)

Calibration and Troubleshooting
5-6 TM-F2OP-C1XN-01
Current Limit Programming Circuit Calibration
To perform current limit programming circuit calibration:
1. Ensure that the power supply is turned OFF. Disconnect any load.
2. Connect the program source between J2 connector terminals 8
(output current limit programming input) and 7 (current program
signal return).
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 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.