Product VLT® AutomationDrive EZ FC 321Intermittent display
VLT® AutomationDrive EZ FC 321

Intermittent display

The display is either on or off when it is not supposed to.

Mögliche Lösung gefunden

If the display stays lit, the problem is in the control wiring. Check the wiring for shorts or incorrect connections

Test:
To rule out a problem in the control wiring,
disconnect all control wiring by removing the
terminal blocks.

Possible cause/s:
Internal voltage supply fault or SMPS is defective