Stupid VFD and Motor Question

W

Will Leavitt

Joined
Jul 28, 2006
Messages
3,953
Mkay... I've got everything wired up but the motor to the vfd. I'm confused there's like 340987098 wires :eek: coming from the motor but only 3 coming from the vfd output. errrrrr how does this go together? :confused:

It's a Lenze AC tech controller model SM010s and a NEMA56c 3ph motor.
 
The name plate on the motor should have a diagram/list of which wires go together. Usually there is a high voltage and a low voltage configuration but not always. The wires should be either numbered or color coded.
 
Mkay.. I found the diagram...

It's a 3ph motor. I'm using 110 VFD.

the diagram

230v
t4-t5-t6

t7-t1
t8-t2
t9-t3


460v
t4-t7
t5-t8
t6-t9

t1
t2
t3

That's the best I can do compared to the drawing on the diagram.

I have 5 terminals on the vfd power out side.
 
Sorry it took so long to answer. The Lenze site is good but it took some time. Does the label show "line" on it? It should be next to the t1,t2,t3. The "line" wires are the ones coming from the VFD. If it doesn't say the ones I'm used to working with are as follows. t4-t5-t6 get tied together. t7and t1 go to lead U in the drive. t8 and t2 go to V in the drive. t9 and t3 go to W in the drive. Don't forget the ground. Could be either labeled ground or be painted green or have the ground symbol on it.
 
I have to run to a meeting. I won't be able to check back until tomorrow. Good luck and if you don't get any other questions answered I'll help then if I can.
 
Cool Frosty, I think I understand now :) So t4,5,6 are just tied together? I'll assume PE is ground?

Thanks
 
Verify the output on your VFD and match that voltage to your motor wiring. You can set most of them to output different voltage than their input...so you may be able to set it for 440VAC even with your 220 VAC input. I assume you are using 220 for an input, right? A standard 110 single pole outlet isn't going to let you run much more than a 1 Hp motor.

The higher voltage is desirable if possible because the motor should run cooler.
 
It's 110v and a 1hp motor because currently the stupid breaker box is full and I can't add anymore (read fiance also won't let me add) another box until I build the separate shop.
 
If your panel, where your breakers are, is not overloaded with the amount of amps being drawn on it you can get what is called a piggyback breaker. It is the size of a regular double pole breaker but has double tabs on it. It is designed to allow you to put two 240 volt circuits in the same space as one 240 volt circuit.
 
When I wired up Mitch' (Troop) VFD and motor i was like OH CRAP there was a ton of wires in the motor and onlylike 3 or 4 coming from the VFD, but they all just wire nut together accordingly, VERY easy with the right pictures and directions ALA Rob:D.
 
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