- Joined
- Oct 13, 2013
- Messages
- 46
I have a Millport Mill varispeed "Bridgeport Clone" which is 3hp 3 Phase. I purchased a HUANYANG 5HP VFD hoping the 2hp extra rating would be more than enough to power the 3hp motor. I connected it so the frequency was always 60Hz so I could use the mills variable speed wheel and reversing switch like it was meant to be used. I set all the perimeters like I think they should be set so when I turn on the VFD the freqs are at 60Hz, Volts 220 but when I turn on the mill the VFD gives the error "e.oc.n" which I believe means over current. I have connected a amp clamp to one of the 3 phase motor wires and it shows 6.7 Amps max and the VFD is rated for 17Amps. I am guessing there is such a high initial currant draw that the meter can't pick it up but the VFD does and going into protection mode.
Now if I manually run the frequency from 20Hz on up to 60Hz the mill runs great. Also if I use the terminal connections with a separate fwd/rev switch the VFD powers the mill fine.
Before I have to resort to rewiring the fwd/rev switch to control the VFD can anyone give me any more info on any setting or idea to try.
Now if I manually run the frequency from 20Hz on up to 60Hz the mill runs great. Also if I use the terminal connections with a separate fwd/rev switch the VFD powers the mill fine.
Before I have to resort to rewiring the fwd/rev switch to control the VFD can anyone give me any more info on any setting or idea to try.