Converting Mill to VFD
- I got the Leeson 3-phase motor today. Now I have to get the AC drive
which is more costly than the motor was. I'm going with the Hitachi
SJ200-015. It's rated for 2HP and the Leeson motor is a 1.5HP motor.
Hitachi doesn't make a 1.5HP in the SJ200 series.
Anybody else converted their mill to VFD?
Thanks for the explanation. I think I'll eliminate the jog function in
--- In firstname.lastname@example.org, "Henry Arnold"
> The Jog/Run switches between run and jog mode. In jog, the spindle
> turns very slowly after you push start. In run, the motor turns based
> on the speed set by the speed control after yuo push start. The jog is
> not needed because in run mode you can turn the speed down to very
> slow. The Run/Jog switch also lights up (green) when the VFD is in RUN
> mode. The FWD/REV switch lights up (red) if there's a VFD alarm
> condition. I have never had an alarm. The On/Off switches control the
> main power contactor. In normal use, I mainly use start/stop and speed
> to control the mill. Once in a while, I reverse the motor which can be
> done safely with the motor running. This feature could be used for
> tapping. When you flip the reverse switch the motor gracefully slows,
> stops, and then reverses.
> --- In email@example.com, "Ed" <ekadlec@>
> > Henry,
> > I was looking at the picture of your VFD control box mounted to your
> > mill and I noticed you have both a "Start" switch and a "Jog/Run"
> > switch. Your schematic doesn't show the "Start" switch and I was
> > wondering what is the functional difference between your "Start" and
> > "Run" switches?
> > By the way, without knowing it I chose the exact same switch for my
> > Forward/Reverse switch. At least the picture of yours looks just like
> > what I ordered from Digi-Key.
> > Thanks,
> > Ed
> > --- In firstname.lastname@example.org, "Henry Arnold"
> > <henryarnold@> wrote:
> > >
> > > Ed,
> > >
> > > I posted the schematic in the Files section under the name
> > > HitachiVFDhookup.gif I changed some of the default settings
> > > ones that allow the external terminals to be used to start,stop, and
> > > jog the motor.
> > > Let me know if you have any questions.
> > >
> > > Henry Arnold