Two grinders, one VFD: possible?

[blindrobert]

I'm in the planning stages of building my own horizontal grinder similar to the EF-48. i have a 2HP motor and VFD on my 2x72 grinder and was wondering if any of you have ever seen something like an A/B switch to share a VFD between two motors (that would never be running simultaneously.

I know the motors would have to be the same spec so that the jumpers inside the VFD wouldn't have to be reset ever time it was used. I'm just curious if there's a way to share the drive.

 

[12345678910]

You can use plugs and plug the motors in andout of the vfd, or you can use switches


http://www.bladeforums.com/forums/showthread.php/718007-Three-motors-one-VFD


http://www.bladeforums.com/forums/s...good-way-to-design-multiple-grinders-on-1-VFD

 

[NickWheeler]

That^^^

I have two 9" disc sanders running off of the VFD on one of my KMGs.

 

[Paul Savage]

Yup, as above . I run my grinder surface grinder and buffer all off one vfd. I have individual plugs.

 

[JMJones]

I use plugs to run a 1hp surface grinder and a 3hp belt grinder on one 3 hp rated vfd. No change necessary on the vfd as far as I have experienced. They both work fine.

 

[butcher_block]

yep 1 vfd and i use twist lock plugs. 2nd vfd is in the works but that will run the bridgeport in the cleaner part of the shop

 

[A C Richards]

I too have one VFD. Put male 3ph plugs on all my equipment and the corresponding female plug on the VFD. At one time I had 2-9" discs, 1 2x72, Mill, and a buffer set up to run by plugging in the appropriate machine.

I have since installed a rotary phase converter and run the mill, power hammer and surface grinder direct off that. The grinders and buffer still run through VFD and plugs.

 

[jtdesigns]

I use 2 dpst switches in a "switch box". The first switch is: down is my Kmg and up throws control to second switch which is my 9" flat disk and ef-48 horizontal grinder clone. All is controlled by one vfd