The vendor is right. You don't want to switch downstream of the
drive. I routed the power going to the drive through the safety
disconnect. The barrel switch has been reconfigured to switch the the
drive via the remote inputs, and the output of the drive goes directly
to the motor. The remote input refernce voltage can also be routed
through the door interlock safety switch. Your vendor would approve of
the setup. OSHA and NEC would even approve. I'll get my notes tonight
and tidy them up. Do you have remote inputs for forward, reverse and 2
preset frequencies on your drive?
Look on the inside of the electrical box door for the wiring diagram.
Dave-
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Thanks for the interesting photo. The vendor who sold me the VFD
said the worst thing I could do was to turn the lathe off then
on with the switch while the VFD was on. Turning it off was fine
but that the "back on" would cause the VFD to reset, He didn't say
that it would hurt the VFD but he didn't seem to think it was
that great of an idea.
Please do let me know how you configured the jumpers.
I don't have any (wiring) diagrams for my lathe.
-Almus
