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Rockwell Automation Publication 520-UM001K-EN-E - August 2021
Chapter 4 Troubleshooting
Motor operation is unstable
Cause(s)
Indication
Corrective Action
Motor data was incorrectly entered.
None
1. Correctly enter motor nameplate data into
.
2. Enable
[Compensation].
3. Use
[Boost Select] to reduce boost level.
Drive will not reverse motor direction
Cause(s)
Indication
Corrective Action
Reverse is disabled.
None
Check
[Reverse Disable].
Digital input is not selected for reversing control.
None
Check [DigIn TermBlk xx] (See
). Choose correct input and program for
reversing mode.
Digital input is incorrectly wired.
None
Check input wiring (See
Motor wiring is improperly phased for reverse.
None
Switch two motor leads.
Drive does not power up
Cause(s)
Indication
Corrective Action
No input power to drive.
None
• Check the power circuit.
• Check the supply voltage.
• Check all fuses and disconnects.
Control module is not connected properly to power module. None
1. Remove power.
2. Verify that the control module is properly and fully installed on the power module.
3. Reapply power.
Motor is rotating at zero Hz or slip frequency is not correct
Cause(s)
Indication
Corrective Action
Incorrect speed calculation.
Improper speed.
• Reduce boost with
[Boost Select].
• Set
[Motor NP RPM] to motor synchronous speed.
Summary of Contents for Allen-Bradley PowerFlex 520 Series
Page 8: ...8 Rockwell Automation Publication 520 UM001K EN E August 2021 Table of Contents Notes ...
Page 68: ...68 Rockwell Automation Publication 520 UM001K EN E August 2021 Chapter 2 Start Up Notes ...
Page 236: ...236 Rockwell Automation Publication 520 UM001K EN E August 2021 Appendix F PID Set Up Notes ...
Page 270: ...270 Rockwell Automation Publication 520 UM001K EN E August 2021 Index Notes ...