What would cause the Altivar ATV340, ATV600 ATV900 Process Drive to power up with Safe Torque Off on the display?

FAQ 검색

What would cause the Altivar ATV340 Process Drive to power up with STO on the display?

Issue:
Altivar Process Drive power up with Safe Torque Off on the display

Product Line:
ATV

Environment:
All

Cause:
Wiring

Resolution:
The VFD safety feature requires 24Vdc input on STOA and STOB terminals. If there is no field wiring to these terminals, you must leave or install a jumper from 24v to STOA / STOB on top of the drive in the CN2 position.