Can 2 grinders/motors be hooked up to the same VFD?

[Patrice Lemée]

Well they did not have them at the local electronics place. I'll order one online.
Any preference between soldered or screw terminals?

Thanks

 

[Fellhoelter]

I used quick disconnect...

Personally I would go with screw before solder in this application.

 

[Patrice Lemée]

Thanks Brian, I'll probably used quick disconnect too if they have them.

 

[Patrice Lemée]

Ok, got the switch today. Which wires go where?

 

[12345678910]

Ok, got the switch today. Which wires go where?

Hold the switch and flip the toggle handle one way and the other
(the direction of the toggle points to what I call "a side")


The 3 wires from the output of your VFD go in the centre.


3 wires from one motor on one side
3 wires from the other motor on the other side

If the motor rotation is reversed to what you desire, swap the position of 2 wires for that motor.




If you have a multi meter you can check

123
456
789

If 456 is the "middle"
then when you have the switched flipped UP there will be zero resistance between
1&4, 2&5, 3&6

If 456 is the "middle"
then when you have the switched flipped DOWN there will be zero resistance between
4&7, 5&8, 6&9



You may have already started this, but if you have screw terminals, I like to use these.
Crimp a ring on each wire first, then just screw then onto the switch.

 

[Patrice Lemée]

That's great. Thanks.
Just a small other thing. What about the grounds?

PS: Sadly I already bought a switch with quick change connectors.

 

[Fellhoelter]

The grounds all go to ground...

Same place your first motor was grounded.

Should be a green screw inside the case for ground.

Quick change connectors are fine, just crimp the proper terminals to the end of your wires...

 

[Patrice Lemée]

Thanks Brian. The receptacle I got is too small so next week I'll go buy a deeper one.
Not sure the motor are even grounded, I'll see when I open it up.

Thanks again.

 

[Fellhoelter]

Well then ground them...