05-15-2019, 09:40 PM
Arvid brings up a good point concerning the initial set up of your VFD. It's best to use the controls on the VFD itself to begin with to make sure you can get the motor operating correctly (start/stop, FWD/REV) before moving on. Getting the basic parameters set correctly for the motor to be able to run at all (and hopefully smoothly) is paramount.
Once you know you can get the motor to run - then you can work on setting up any external controls. You CAN use your original drum switch as a FWD/REV control, but you will need to rewire it as a control input into the VFD itself rather than directly controlling the motor. You can still control the lathe with the drum switch as you would normally - it's just that the VFD will be acting as the middle man. That is how I set up my own lathe when I converted it from single phase. Actually I can easily switch between using my drum switch -or- using the controls on my Hitachi VFD since it has an extra control relay built in that allows me to do that.
If you could post a picture of the entire data plate on your motor and list what your current parameter settings are, that would be a great place to start. If you ever get lost in the weeds fighting with the parameter settings on your VFD it would be best to do a hard reset back to factory defaults on the unit and start over again. All it takes is ONE parameter being set wrong to have you chasing your tail for weeks! Ask me how I know!
Once you know you can get the motor to run - then you can work on setting up any external controls. You CAN use your original drum switch as a FWD/REV control, but you will need to rewire it as a control input into the VFD itself rather than directly controlling the motor. You can still control the lathe with the drum switch as you would normally - it's just that the VFD will be acting as the middle man. That is how I set up my own lathe when I converted it from single phase. Actually I can easily switch between using my drum switch -or- using the controls on my Hitachi VFD since it has an extra control relay built in that allows me to do that.
If you could post a picture of the entire data plate on your motor and list what your current parameter settings are, that would be a great place to start. If you ever get lost in the weeds fighting with the parameter settings on your VFD it would be best to do a hard reset back to factory defaults on the unit and start over again. All it takes is ONE parameter being set wrong to have you chasing your tail for weeks! Ask me how I know!
Willie