Technical FAQs

Ask a Question

What are possible causes for a SCF fault code on an ATV58?

Issue:
SCF is a Short Circuit Fault

Product Line:
ATV58, FLEX58

Environment:
All models and serial numbers

Cause:
Possible causes are:
1.  heat sink fans are not operating
2.  The output transistors (IGBT) are not gating correctly
3.  Short circuit in the motor or motor wiring
4.  capacitance due to long motor lengths   

Resolution:
1.   replace the heat sink fans
2.   repair or replace the drive.  This drive has been discontinued.  Parts may not be available.
3.   check motor for shorts,  Megger motor and motor wires with minimum of 1000v megger
4.   add a load filter

Was this helpful?
What can we do to improve the information ?