[How do I?] B&S Surface Grinder Stepper Motor Power Table Feed

[Flyinfool]

I started a thread on this several years ago. There are 11 pages of info in there. You might find something useful.
I am watching this thread as I was never able to finish my conversion beyond being able to get the table to move back and forth. But my stepper was to small so it only could move very slowly. I will be watching this thread as this is still on the list of things I need to do.

Convert a manual grinder to auto feed?

Anyone ever done this? I have an ancient B&S No.2 Surface grinder. These pics are are of it before I took it home and hauled it into the basement. I have since cleaned everything, and replaced every bearing. I would like to convert it from full manual to a auto feed in both the X and Z. The only...

www.hobby-machinist.com

 

[bcap55]

Did some research on VFD's, and you guys are right. VFD's can be run without a load, but you can't switch a load on and off with the VFD running.
I'm going to have to rethink the wiring schematic and probably add a switch to turn the VFD on and off to control the spindle motor.
This is why I posted this build thread on here, I knew someone here would spot my mistakes and have a solution.
Thanks guys.

 

[f350ca]

Did some research on VFD's, and you guys are right. VFD's can be run without a load, but you can't switch a load on and off with the VFD running.
I'm going to have to rethink the wiring schematic and probably add a switch to turn the VFD on and off to control the spindle motor.
This is why I posted this build thread on here, I knew someone here would spot my mistakes and have a solution.
Thanks guys.

i recently checked with Automation Direct about switching the input with a load on the vfd. Was going to do this for coolant on my mill. NOT recommended. You should leave the vfd powered and start stop with the panel buttons or external switching.

Greg