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Troubleshooting Crane Setup with Encoder/Resolver Feedback
The following faults commonly occur during drive commissioning.
F4 "AC Undervoltage"
• If the mains supply is still present, reduce the undervoltage level at P481
[UnderVolt Thresh].
F5 "Arm Overvoltage"
• Verify the parameter settings as stated in Set Up the Drive on page 309.
F94 "TrqProve Spd Band" (Speed deviation fault)
• This fault is only active when TorqProve is enabled.
• The speed loop tuning is incorrect. Increase P434 [Spd Reg BW] or
P433 [Total Inertia]. If these values are too high, the regulator becomes
unstable.
• P1008 [Spd Reg Fdbk] should follow P113 [Ramp Out] as closely as
possible.
• The drive is going into current limit. The drive is undersized or
acceleration / deceleration is set too fast.
• The brake is not opening. Check for faulty brake operation.
For more fault information, see Chapter 4 Troubleshooting on page 219.
Crane Setup - Encoderless
These setup instructions assume the following.
• The drive and motor size have been carefully selected
• The drive parameters are at the factory defaults
• Programming is done with DriveTools SP or Connected Components
Workbench® software
• Crane control is done via Run Forward / Run Reverse inputs
• The mechanical brake control is wired to Relay Output 2
ATTENTION: Loss of control in suspended load applications can cause
personal injury and/or equipment damage. The drive or mechanical brake
must always control the load. Parameters 1100...1114 are designed for
lifting/torque proving applications. It is the responsibility of the engineer
and/or end user to configure drive parameters, test any lifting functionality
and meet safety requirements in accordance with all applicable codes and
standards.
Rockwell Automation Publication 20P-UM001M-EN-P - November 2017
Application Notes
Appendix C
313
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