Inverter Remote Stop button.

Hi Roger,

As far as I can see almost anything is possible with the Jaguar Cub. It is obviously not possible to have two potentiometers setting eth speed at the same time, but two 'stop' switches can be implemented in several ways.

With F02 programmed to 0, 2 or 3 the run and stop burttons on the inverter will work. (p.5-14)

If you program E01, E02 or E03 to 7 (or 1007 depending on whether you use an N/C or N/O switch) then respectively X1, X2 or X3 can be wired through a switch to PLC or CM (depending on whether you have the jumper set to the source or sink position). This additional switch will act as a 'coast to stop' (i.e. quick) stop button.

Sorry if some of that is vague, I'm to tired to be definitive about all the details. (p.5-30 5-31)

Neil

Hello Nigel, Im just finding out what an amazing bit of kit the inverter is. Ive got the manual on a PDF file, but in my view, it would be better if it was laid out in laymans terms, rather than the over complicated way it is now. All the info is probably there somewhere, but finding it ........I learnt more from the quickstart guide, which is nicely laid out.

In fact , ive found more info on this site from people like yourself than the manual. You will have to write that article you mentioned earlier , just hurry up !!!. Regards, Roger.

Hi Roger,
I have built the SCR version of the latching circuit to test that it works and to see how small it could be built. Here is a picture of it next to a one penny coin.

It would need sleeving over the leads and to be encased in heat shrink sleeving. I would have thought that there would have been enough room for this in the box containing the buttons.

Thanks Neil for indirectly pointing me to the full manual with your page reference which did not make sense in the very brief manual I had. I have not had time to study it fully yet but it looks to contain all or the required information.

Hello Les, I presume that is an electronic form of a relay in your photo ?. I would probably be out my depth attempting something like that, but if you could perhaps post a giagram and what I need to obtain, Ill give it a go.Many thanks, Roger.

Hi Roger,
This is the schematic of the SCR latching circuit.

If you are not used to building electronic circuits then I do not think it is a good idea to build this using the construction method I have shown. Although there is no danger from the 24 volt control circuit there is a risk of the wires shorting together unless it is constructed with great care. A short could cause the lathe to start unexpectedly. Also I have ASSUMED that there is a start button in the box with the stop button but I do not think I have any evidence from your posts that this assumption is true. I have had a look at the manual and I think Neil's suggestion is your best option as you do not seem to want to install a box for the stop and start buttons with enough room for a small relay. (The Maplin relay is about 20mm x 16 x 16mm) As the stop button almost certainly has normally closed contacts you would use setting 1007

Les.

Hi Les

I have to say thanks for posting the above schematic and picture, I had been pondering how to get a remote control starter for a Teco T-Verter to lock in for a few days, pardon the pun but the penny dropped when I saw your picture and schematic. I ordered a couple of SCR's from ebay and got the the unit to work first time but was a little careless when tiding up the wiring and broke one of the pins (they are really delicate) on the SCR so had to do it all again, you can see from the photo below it has turned out quite well. I will post more photos on my thread for my mini mill I started a while back as I don't want to hijack this thread.

Jim

Edited By Jimillsortit on 29/03/2014 19:44:51

Edited By Jimillsortit on 29/03/2014 19:45:27

Edited By Jimillsortit on 29/03/2014 19:46:06

I apologise for the deal in sharing full details of my setup, but I want to move everything over to the new control box, which means a slightly different configuration. I don't want to share details until I know the new arrangement works. Problem is, now I have had a chance to get in the workshop, I'm playing round making a few simple things and I don't want to disable the lathe...

Neil

After having read the full information on the Jaguar Cub VFD I would design the SCR latching circuit differently. The way the circuit I posted is designed there is a possibility the SCR might not latch. This is because the voltage to the gate via the resistor is decreasing as the SCR is switching on. It is dependant on the SCR latching before the drive to the gate becomes too low. Seeing the versatile way the inputs on the VFD can be configured would allow the load resistor to be put in the anode circuit of the SCR. In that configuration the full gate current would be flowing even when the SCR was fully turned on. I did consider adding a capacitor and a diode to the circuit show to get round this possible problem but as the OP said there was NO ROOM in the switch box I left these components out.

Neil, I think your VFD configuration would make a good article for MEW.

Les

> Neil, I think your VFD configuration would make a good article for MEW.

The old editor was quite keen, but I have to convince the new one.

Neil

Did the article ever get written?

I'm running my Meddings drill using the IMO Jaguar Cub inverter. I currently run it directly from the inverter but I want to run it from a remote control station. Start/Stop and speed control pot.

Don't forget DC Injection Braking, an option available on many good drives which although not as fast as using a braking resistor is still quick enough to require positive retention on screw-on chucks to ensure they don't go on safari