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How to run the ATV312 in reverse when controlling via Profibus?
Issue:
Controlling ATV312 in reverse direction with Profibus.

Product Line:
ALTIVAR 312

Environment:
All Serial numbers

Cause:
N/A

Resolution :
When controlling the ATV312 VIA profibus, profibus ignores the last 8 bits of the ATV312 Modbus Command word.  Therefore, to command the VFD to run in the reverse direction, a negative speed reference must be written to the speed reference.

Schneider Electric United Arab Emirates

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