59

Current limit exceeded

Danfoss · VLT HVAC Drive High Power

What does 59 mean?

The motor current has exceeded the value set in parameter 4-18 (Current Limit). This indicates that the motor is drawing excessive current, potentially due to overload, incorrect motor data, or a mechanical issue, which could lead to motor or drive overheating and damage if not addressed.

Complete Troubleshooting Guide

  1. 1

    Verify that the motor data in parameters 1-20 to 1-25 is set correctly according to the motor nameplate.

  2. 2

    Check the mechanical load on the motor for any binding or excessive resistance.

  3. 3

    If safe and necessary for the application, increase the current limit in parameter 4-18, but ensure the system can operate safely at this higher limit.

  4. 4

    Investigate for short circuits or ground faults in the motor or cabling.