You can hook up the 3 leads in any order. The only thing is, the motor may run backward when it should run forward. If that happens, just reverse any two of them.
As for #2, yes. Otherwise you can get a spike caused by the motor inductance that can overload the VFD. Switch on/off/reverse ONLY with the VFD. Assuming you got an instruction manual with the VFD, it ought to have a caution about this.
When I put a VFD on my milling machine, I took the knob off the machine's on/off switch so I wouldn't acidentally use it in a moment of stupidity.
[This message has been edited by SGW (edited 11-24-2003).]
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