Rockwell Automation 20Y PowerFlex 700H, 700S, and 700AFE Drive Fan Systems, Frames 9...14 - Manual (Page 267)

Rockwell Automation Publication PFLEX-IN029B-EN-P - August 2014 267
PowerFlex 700H and 700S Diagnostic Procedures Appendix A
Frame 11 PowerFlex 700H and 700S Drives
The ASIC board controls all three fan inverters.
• X11 on the ASIC board to X8 on the W phase inverter
• X3 on the W phase inverter to X8 on the V phase inverter
• X3 on the V phase inverter to X8 on the U phase inverter
• X3 on the U phase inverter is terminated by a jumper
Refer to the wiring schematics on page 89 . Use the following procedure to isolate
a faulty inverter if the main fans are not running. This procedure can only
identify one faulty inverter board. If more than one board is faulty, this test will
result in all boards being identified as faulty.
Checking the W Phase Fan Inverter
1. Disconnect the cable from X3 on the W phase fan inverter circuit board.
2. Remove the jumper on the U phase fan inverter circuit board and connect
the jumper to X3 on the W phase fan inverter circuit board.
3. Energize the drive.
4. If the W phase fan inverter faults, then replace the W phase fan inverter
circuit board. For AC fan systems, see Main AC Fan Inverter Circuit
Board (20-VB00299) and AC Output Transformer Assembly (20-
FR10845) Removal and Installation on page
99 . For DC fan systems, see
Main DC Fan Power Supply Circuit Board (SK-H1-DCFANBD1)
Removal and Installation on page
101 .
5. Restore original wiring configuration.
Checking the V Phase Fan Inverter
1. Verify the original wiring configuration.
2. Remove the cable from X3 on the V phase fan inverter circuit board.
3. Remove the jumper on the U phase fan inverter circuit board and connect
the jumper to X3 on the V phase fan inverter circuit board.
4. Energize the drive.
5. If the W and V phase fan inverter circuit boards fault, then replace the V
phase fan inverter circuit board. For AC fan systems, see Main AC Fan
Inverter Circuit Board (20-VB00299) and AC Output Transformer
Assembly (20-FR10845) Removal and Installation on page
99 . For DC
fan systems, see Main DC Fan Power Supply Circuit Board (SK-H1-
DCFANBD1) Removal and Installation on page
101 .
6. Restore original wiring configuration.
Checking the U Phase Fan Inverter
1. Verify the original wiring configuration.