Inverters? Talk to me.

I understand the reversing switch just wires into the low power controls. It's the actual switch itself that looks a bit confusing (search santon rotary switch) I guess if I play around with a multimeter on the contacts I should be able to work it out?

I think I have the motor delta wiring worked out, there is a diagram on the inside of the cover plate.

That leaves me with the 3 motor input connections (and earth). On my motor these are marked A, B, C, N and all the wires are white. I'm not sure which way these need to be wired into the inverter output? They are marked U, V, W. And ground.

You should be able to identify the earth one easily either with a multimeter or where it is connected in the control box with the Santon switch. three of them will connect to the switch contacts and one to earth. Here is a diagram of one version of a Santon switch.

This switch was used for recersing a single phase motor but if it is the same as your switch it should help you work out how to connect it to the inverter control inputs.

Les.

This is a diagram of the wiring I found. So assuming my switch is similar to the above. I just connect:

No.1 to terminal 3

No.2 to terminal C

No.3 to terminal A

??????

Yes, That should work. If You want to fit any interlocks or emergency stop buttons then just connect them all in series between terminal 1 on the inverter and terminal 3 on the switch. They all need to be normally closed contacts. I would have to see the manual on the inverter to see if this gave an NVR function. So it does not start up when mains is applied if the switch has been left in forward or reverse. I fitted start and stop buttons with my inverter as well as the reversing switch.

Les.

Edited By Les Jones 1 on 10/03/2016 19:14:01

Great thanks that's very helpful!

Just need to figure out the motor connections now and then I'm sorted. Hopefully.

The inverter arrived this morning! Need a little help. I've wired the motor in Delta as below. I now have motor terminals A, B, C but the motor output terminals on the inverter are marked U, V, W can someone tell me which motor to connect to each inverter terminal please?

HP,

If you have successfully wired your motor to DELTA, then connecting to the inverter is straight forward.....

Connect A,B and C to U,V and W....if the motor runs the wrong direction, swap any of the two phases over......

Dont connect anything to the N connection.

Edited By John Rudd on 11/03/2016 15:27:51

Thanks, got it working now!

Well done getting it running  I have just brought inverter and its arriving on Monday with a bit of luck, went for an ABB ACS150 - 0.37kw 230v . Have the motor wire coming as been told this is a must as it needs to be properly shielded. Will let you know how I get on. The reason for buying this one was it was the only one that actually stated it would work on a domestic supply . So figured as I had heard lots of stories with the inverters blowing domestic RCD I would go for this one. Will let you know how I get on.

Edited By Martin Newbold on 03/04/2016 11:15:41

Edited By Martin Newbold on 03/04/2016 11:19:13