3 grinders, 1 VFD!!

BenR.T.

BenR.T.

Tanto grinder & High performance blade peddler
Moderator
Joined
Apr 18, 2011
Messages
4,925
I Finally got around finishing building the frames and wiring my newest grinders. A disc and a horizontal.
I wanted to run all of them with speed controllers, but didn't want to shell out the cash for another 2 VFD's. So with a little creative wiring I was able to hook them all up to through the same vfd. The horizontal should be the cats meow for profiling and the disc will be awesome for flat grinding and handle fit up. I just need to finish the other 2 work rests on horizontal and they will be all done.
Here are some pics and a short video.

[video=youtube_share;ZbOd0fO2zRA]http://youtu.be/ZbOd0fO2zRA[/video]

IMG_2188.jpg


IMG_2179.jpg


IMG_2180.jpg


IMG_2181.jpg


IMG_2189.jpg
 
Nice Ben.

I dont know if there is the option with those vfd's, but on mine I have a remote pot and on/off switch and fwd/rev. I will have same 3 grinders with 1 vfd and I can moove the controoler to each grinder. Then I have speed control and more importantly on orr capabilities where I am.

Matt
 
Awesome Ben! Things in my shop have been so much more streamlined since I expanded my grinding area to include the disc and horizontal. I love it. Hope you have a blast with the new machines buddy:thumbup:
 
Hi Ben,

Nice setup! I'm currently looking at wiring my 27D for a second motor. Could you post some info on the switch that you used and how you did the wiring?

Thanks!
 
I also would like to know which switch and where you got it ?
Thanks Anthony
 
PIndelicato said:
Hi Ben,

Nice setup! I'm currently looking at wiring my 27D for a second motor. Could you post some info on the switch that you used and how you did the wiring?

Thanks!
Click to expand...



A triple pole, double throw toggle switch.
230 VAC
2 HP should do it.

I also think that "center off" position makes sense

You can do all that wiring inside that VFD case, there is lots of room for that and enough punchouts to run the wiring for 2 motors out the holes too, 3 motors, you would want to drill another hole but no worries, the front cover comes off pretty easily

Two motors
vfdtoswitch2motors-1.jpg



For 3 motors, you can chain 2 of those switches together.
vfdtoswitch3motors-1.jpg


1, 2, 3 motors ah, ah ah.
.
 
Last edited:
Trying to do a similar setup.
What about the ground wires? Do you run each one direct to the VFD or can you connect them all in the switch box and then to the VFD using one ground wire?
 
Thank you sir!

Will this 9 terminal switch from McMaster-Carr work ok? (I've seen where others have used an 'ON-ON' switch, but I like the idea of a center off position.)

-3 Off or On On or Off Stays Switched 9 3PDT ON-OFF-ON 25 20 0.69" 8001K42 15.60

12345678910 said:
A triple pole, double throw toggle switch.
230 VAC
2 HP should do it.

I also think that "center off" position makes sense

You can do all that wiring inside that VFD case, there is lots of room for that and enough punchouts to run the wiring for 2 motors out the holes too, 3 motors, you would want to drill another hole but no worries, the front cover comes off pretty easily

Two motors
vfdtoswitch2motors-1.jpg



For 3 motors, you can chain 2 of those switches together.
vfdtoswitch3motors-1.jpg


1, 2, 3 motors ah, ah ah.
.
Click to expand...
 
PIndelicato said:
Thank you sir!

Will this 9 terminal switch from McMaster-Carr work ok? (I've seen where others have used an 'ON-ON' switch, but I like the idea of a center off position.)

-3 Off or On On or Off Stays Switched 9 3PDT ON-OFF-ON 25 20 0.69" 8001K42 15.60
Click to expand...

Give me a part number, I don't know which one you mean and I don't think you can link directly to MC
 
12345678910 said:
Give me a part number, I don't know which one you mean and I don't think you can link directly to MC
Click to expand...

Here is the part number: 8001K42

I read in another post where Salem S. used the K41, which seems to be the same type switch but is On-On vs. On-Off-On. I like the idea of having an 'Off' position on the switch (not sure why, just seems like a good idea.)
 
PIndelicato said:
Here is the part number: 8001K42

I read in another post where Salem S. used the K41, which seems to be the same type switch but is On-On vs. On-Off-On. I like the idea of having an 'Off' position on the switch (not sure why, just seems like a good idea.)
Click to expand...

http://www.mcmaster.com/#catalog/118/876/=imv8xa

Seems OK to me.

Scroll down on that page and get a rubber boot cover at the same time, not sure which one, the description mentions metric M12
 
This setup is very neat, and it saved you the big bucks. This wiring stuff is a little too confusing...
 
Thanks for all the comments guys!
The wiring really is quite simple once you get started. If I can do it, anyone can!
 
You must log in or register to reply here.
Back
Top