Remote control for 3 phase inverter.

I'm soon to be wiring up a pendant for a jaguar cub motor.

My reading is that I need (aside from eth speed control pot):

red stop button - momentary switch wired to one of X1-3 programmed as 'coast to stop'

Toggel switch jog/normal wired to one of X1-3 programmed as 'Jog mode'

Toggle switch fwd-off-rvs the common terminal wired to CM via a momentary green start switch

I am I correct that programming the 3-wire 'hold mode' this will allow the green start switch to activate fwd or rvs until the red switch is pressed?

Thanks

Neil

Neil - that doesn't sound quite right -

Fwd-off-rvs, if wired via momentary start p/b, then the 'off' of the 3 position switch can't do anything (except act as a disable).

Not familiar with the Jaguar - some inverters offer more than one switching mode dependent on how you want to control it.

One that I use here is set to mimic a NVR contactor behaviour (3 wire mode) - n/o button to start, n/c button (and any interlock switches) to stop. The same inverter can also be set to have a single contact - closed for run, open for stop (2 wire mode). On my drive, fwd/rev is done via a simple on/off toggle switch, as is jog mode.

Mine is not a Jaguar drive though - so the handbook should be your ultimate guide.

Sounds a bit complicated, both mine have simply a 3-position switch (Fwd, Stop, Rev) and a pot for speed. That's it.

Chris

I'm afraid that I'm unable to help Len P, but for Neil here is the circuit diagram of the remote pendant that I made for my Jaguar Cub VFD. In addition to the usual switches and a 5K pot you will need a 24v single-pole relay.

Come to think of it, perhaps Len can rig up something similar for his VFD.

Brian

This crappy website strikes again. I have tried opening the image in my above post and find that I am unable to, so presumably no-one else can either. I put it there by pasting the image from the clipboard. When creating the posting the only way that I could view what I had pasted was to click on the icon, select copy and then paste into a blank document, but once posted clicking on it has no effect.

Does anyone know how to get round the problem? I have the diagram as a Word document and as a PDF. If all else fails I could always send it to anyone interested via a PM.

Brian

Hi Brian,

The remote unit I built many moons ago now is fitted to the right hand side of my Tom Senior M1 mill.

I did post images of it on this site but I can't locate them now, not even in my albums.

As a matter of interest many years ago when I was designing control panels for aircraft and ships we had procedures and ergonomics to consider that were laid down in Def-Standards (MOD were hot on this).

Most parameters, like to increase a function's value, a control dial was rotated in a clockwise direction, to decrease one would turn the dial anti-clockwise.

This, most of us see as commense sense.

What makes me wince is when I see switches labeled up such that to operate REVERSE, the switch lever moves from left to right and vice versa when good ergonomics dictates that when selecting FORWARD, the switch lever should move from left to right.

You even see this on proprietary gear being sold.

I know a lot of you would say, what the hell does it matter.

I say it's just a matter of good engineering design.

Anyway that's my grouse for today.

Love to you all!!!

Len. P.

Len P,

You have two Left to Rights, or I'm missing something.

Geoff - Good day out yesterday.

Possibly Oub!

Len.P.

This lefthanded/righthanded business caused the Three Mile Island nuclear accident. The two adjacent control boards for the two reactors were mirror images of each other. The staff had actually put coke cans and tennis balls over the levers to differentiate between them!!!

Frank

It seems that different inverters have very different controls. Brian - I've sent you a PM with my email thanks for the offer!

I do wonder if a relay will be needed.

Thanks

Neil

It all starts to go wrong with them furriners who think up = on

Oops!

Nothing unusual then for me lately

Neil,

I have sent you the circuit diagram of my Jaguar remote pendant via email. The relay is there as a safety device. When the Start button is pressed the relay operates and holds itself on, maintaining the power to the machine. If power is lost the relay drops out and the machine can only be started again once power is restored by pressing the Start button. Without the relay, if power is lost and the operator forgets to switch off, then when power is restored the machine will start on its own, just as one's grandson is saying "What's that bit for, Grandad?"

Hi Brian,

Thanks, email recieved.

> When power is restored the machine will start on its own, just as one's grandson is saying

I think you have to conciously set one of the parameters to allow the motor to self-start, but the arrangement I was hoping for would require the start button to be pushed too.

Belt and braces does no harm!

Neil;

Well I've got a pendant that will start and run forward or reverse, but I can't get the hold function to work. It just coasts to a stop whenever I release the start button.

A 'John S.' has offered sage advice here : **LINK** in the past, but I'm still struggling. If its 'our John S.' I fear he is on holiday...

Has anyone got this to work?

Neil