Rockwell Automation Publication 750-UM006C-EN-P - March 2022 179
Troubleshooting Chapter 6
Encoder Feedback
Considerations
This section provides additional information about the encoders, their
common issues, and system components.
Refer to the PowerFlex 750-Series AC Drives Programming Manual,
publication 750-PM001
for encoder faults and corrective actions. If after
reviewing the information in the programming manual, the front cover needs
to be removed, see Remove the Front Cover
on page 148 to perform a visual
inspection.
Potential Encoder Feedback Issues
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.
• Encoder faults (refer to manual for details)
• Noise – check wiring, grounding, shielding and field routing
• Keep high power and low power separated
• Encoder feedback device insertion
• Encoder cable pin-out and terminations
• Encoder configuration in drive (PPR, voltage, and so on.)
• Coupling and setscrews to motor stub shaft
• Motor grounding and shielding
• Load side SSI Encoder alignment
• Load side encoder configuration in drive
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.
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