Diagnostics; Faults; Troubleshooting For The Isd 511 Servo Drive; Drive Not Running/Starting Slowly - Danfoss VLT ISD 511 Operating Manual

VLT® Servo Drive System ISD 511
Operating Guide

9 Diagnostics

9.1 Faults

If faults occur during the operation of the ISD 511 system, check:
• The LEDs on the servo drives for general problems relating to communication or device status.
• The LEDs on the PSM 510 and DAM 510 for general problems with communication, auxiliary supply, or STO voltage.
• The error codes.
The error codes can be read using the VLT
device it is connected to.
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If the fault cannot be eliminated by 1 of the measures listed in the troubleshooting tables, notify Danfoss Service.
Have the following information available to enable Danfoss to provide help quickly and effectively:
• Type number
• Error code
• Firmware version
• System setup (for example, number of servo drives, system modules, and lines).
• System status when the fault occurred.
• Ambient conditions.

9.2 Troubleshooting for the ISD 511 Servo Drive

9.2.1 Drive not Running/Starting Slowly

Possible cause
• Bearing wear.
• Incorrect parameter settings.
• Incorrect control loop parameters.
• Incorrect torque settings.
Troubleshooting
• Check the bearings and the shaft.
• Check the parameter settings.

9.2.2 Drive Hums and Draws High Current

Possible cause
• Drive defective.
Troubleshooting
• Contact Danfoss.

9.2.3 Drive Stops Suddenly and Restart is not Possible

Possible cause
• No drive communication.
• Servo drive in error mode.
Troubleshooting
• Check the fieldbus connection and the LEDs on the servo drive.
96 | Danfoss A/S © 2023.08
Servo Toolbox software, the LCP, or the PLC. The LCP only shows faults relating to the
®
N O T I C E
Diagnostics
AQ377148425069en-000101 / 130R1213