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External power supply on an ATV58
All models and serial numbers
An external +24v power cannot be used to power on the control board of an ATV58 drive. The ATV58 generates its own +24v from the line voltage for use with the control circuits. An external power +24v power supply can be used instead of the internal to control the drive if the common external supply is tied to the "com" terminal. The external +24 and internal +24 must be isolated.