Allen-Bradley PowerFlex 525 User Manual page 140

Chapter 4 Troubleshooting
Cause(s)
No value is coming from the source of the command.
Incorrect reference source is being selected by remote device or
digital inputs.
Cause(s)
Acceleration time is excessive.
Excess load or short acceleration times force the drive into
current limit, slowing or stopping acceleration.
Speed command source or value is not as expected.
Programming is preventing the drive output from exceeding
limiting values.
Torque performance does not match motor characteristics.
Cause(s)
Motor data was incorrectly entered.
Cause(s)
Reverse is disabled.
Digital input is not selected for reversing control.
Digital input is incorrectly wired.
Motor wiring is improperly phased for reverse.
140
Drive does not respond to changes in speed command.
Indication Corrective Action
The drive "Run" indicator is • Check
lit and output is 0 Hz. • If the source is an analog input, check wiring and use a meter to check for presence of
• Check
None • Check
• Check
• Check P047, P049,
• Review the Speed Reference Control chart on
• Verify communications if used.
Motor and/or drive will not accelerate to commanded speed.
Indication Corrective Action
None Reprogram P041, A442, A444,
None • Compare
• Remove excess load or reprogram P041, A442, A444,
• Check for improper
None • Verify
• Check
None • Check
• Verify programming of
None • Set motor nameplate full load amps in parameter
• Perform
• Set
See the control diagrams in
Motor operation is unstable.
Indication Corrective Action
None 1. Correctly enter motor nameplate data into P031,
2. Enable
3. Use
See the control diagrams in
Drive will not reverse motor direction.
Indication Corrective Action
None Check
None Check [DigIn TermBlk xx] (See
mode.
None Check input wiring (See
None Switch two motor leads.
Rockwell Automation Publication 520-UM001A-EN-E - February 2013
b012 [Control Source] for correct source.
signal.
b002 [Commanded Freq] to verify correct command.
b012 [Control Source] for correct source.
b014 [Dig In Status] to see if inputs are selecting an alternate source. Verify
settings for t062, t063, t065-t068 [DigIn TermBlk xx].
P051 [Speed Referencex] for the source of the speed reference.
Reprogram as necessary.
A446 [Accel Time x].
b003 [Output Current] with A484,
A530 [Boost Select] setting.
b002 [Commanded Freq].
b012 [Control Source] for the proper Speed Command.
P044 [Maximum Freq] to ensure that speed is not limited by programming.
A572 [Speed Ratio].
P040 [Autotune] "Static Tune" or "Rotate Tune" procedure.
P039 [Torque Perf Mode] to 0 "V/Hz".
Appendix I for more information.
A547 [Compensation].
A530 [Boost Select] to reduce boost level.
Appendix I for more information.
A544 [Reverse Disable].
page 73). Choose correct input and program for reversing
page 34).
page 39.
A485 [Current Limit x].
A446 [Accel Time x].
P034 [Motor NP FLA].
P032 and P033.