Frequently Asked Questions

Q: Can VFsync (PMAC) motors be operated without a drive?

A:  No, all commercially available permanent magnet motors require a variable frequency drive to operate.

Q: Can I use any VFD to control a PMAC motor?

A:  The drive must be specifically capable of operating PM (Permanent Magnet) motors. These PM drives use motor data and current measurement to calculate rotor position. Also note that PMAC motors are not designed for "across the line" starting.

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