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Allen-Bradley The PowerFlex 755 On-Machine - Mechanical Checks

Allen-Bradley The PowerFlex 755 On-Machine
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Rockwell Automation Publication 750-UM006C-EN-P - March 2022 181
Troubleshooting Chapter 6
Load side encoder cables and pin outs
Mechanical Checks
This is a list of possible items that could be observed. This list is not all
inclusive and will vary based on the design of your mechanical system. Refer to
the PowerFlex 750-Series AC Drives Programming Manual, publication 750-
PM001 for encoder faults and corrective actions.
Loose coupling
Missed positioning
•Erratic motion
•Hardwire over-current faults
•Broken coupling
Speed/position errors
Mechanical bind
than normal current (amps) to move slide
Motor hotter than normal and possible over temperature
Feedback position error faults
ATTENTION: If a visual inspection is required, follow the instructions to
Remove Power
on page 146 and Remove the Front Cover on page 148.
Failure to do so could result in personal injury, death, or machine damage.
Ethernet
Motor Encoder
Feedback
Load Side Encoder
Feedback

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