Rockwell Automation 7000A PowerFlex Medium Voltage AC Drive - Air-Cooled (A Frame) - Manual (Page 309)

Component Definition and Maintenance 5-67
7000 “A” Frame 7000A-RM001A-EN-P – January 2011
Output Calibration
Ensure the output of the supply is 56V DC.
There is a potentiometer on the top of the power supply that adjusts the 56
Volt DC output for the power supply. Isolate the output of the power
supplies; multiple supplies in series will affect your measurements. With the
control power on and the output of the AC/DC Converter isolated from the
drive control, adjust the potentiometer until the output equals 56 volts DC.
Perform this test on each power supply. When all adjustments are complete,
re-connect the power supply to the circuit and re-measure the output.
Readjust if necessary.
If it is not possible to maintain 56 V DC, the power supply may be faulty.
Replacement Procedure
1. Ensure control power has been isolated and locked out.
2. Disconnect the terminals at the unit.
3. Remove the four M6 bolts per Figure 5.52 or 5.53.
4. Extract the power supply complete with bracket from the drive.
5. Remove the bracket(s) from the failed power supply (four M4 screws
and nylon shoulder washers).
6. Attach bracket to replacement power supply.
Note: Make sure the Black Insulation(s) is between the AC/DC
power supply and the mounting plate(s).
7. Repeat Steps 5, 4, 3, 2 and 1 in this order to replace the unit (see
Figure 5.52 or 5.53).
8. Reapply control power and verify voltage levels.