Remote speed control pendant

Last week I rewired my three phase motor from star to delta to enable me to run it from an inverter. Now I have two motors to power my Tom Senior M1 mill. I would like to control the inverters using remote pendants like you see from Newton Tesla etc. Does anybody have the circuit diagram of a generic Stop / Start, Forward / Reverse, Jog and speed control. which I could build at home ?

The data sheets for your inverters would be a good place to start. generally they contain schematics for remote control operation. You will need them to set up the inverters for remote operation anyhow.

regards Martin

The precise details can vary, depending upon the inverter in use and how it is configured to operate, so there is no single generic circuit. The manual for your inverter should give the information required, though it may take a bit of digging around to find.

You'll almost certainly have to change a setting to tell the inverter to use a remote potentiometer for speed control.

If somebody offers a circuit diagram - first check that that your inverter is (or can be) configured to suit.

Don't get disheartened though - there are a limited number of variations on a theme, and most of the work will be matching control terminals of your inverter to those from whatever example you choose to follow.

This recent thread may help you on your way.

**LINK**

Hi Peter

Not sure where i got the wiring diagramme from but this is quite good when used in conjunction with your instruction manual for your inverter.

If you check the VFD manual it is pretty simple, most will have a quickstart guide that should have enough info.
Below is what I did for my Chipmaster with an Emerson Commander. I didn't implement jog functionality.

Which VFD did you buy Peter? Each manufacturer has it's own method of connecting the controls so knowing that will help but basically there are two common methods of wiring the run command.

2-wire uses maintained contacts which simply means you turn the motor on and off with a switch, just like a light.

3-wire uses momentary contacts for the run command. Which is a little more complicated but more conventional in terms of how lathes were started with their original contactors using the red and green buttons.

I'm currently using the 3-wire method to build a control box for my South Bend lathe using a Yaskawa drive.

Pete I have not purchased new VFD's for the Tom Senior yet. I have a couple of Jaguar Cubs on other equipment both of which work fine

On my Super 7 I removed all of the 440V switch gear from behind the plate on the industrial stand and wired up a stop / start and variable speed control using back to a Teco inverter.

On my Tom Senior light vertical I purchased a Newton Tesla remote pendant back to Jaguar cub. The 50 volt working light was a pain so I removed the step down transformer and fitted a 240V to LED transformer.

There appear to be loads of "Cheap" VFD's on the market as I require two for the M1 I will be shopping around.

Browsing these might help with general ideas, but VFDs are not standardised.**LINK**

IDS stock a large range of the necessary switches, contactors, pots etc.

Edited By Clive Brown 1 on 20/11/2019 19:49:38

I have 4 inverters in my shop, all with remote controls. They are all connected differently so it’s vital to consult your manual for the correct data. In addition. Each needed a different set of parameters which need to be programmed in to enable correct operation. Research your documentation, some of which is highly complex, it’s just about taking your time to filter out all the superfluous to be left with the needed data. It’s not that difficult just time consuming!