Denford Triac VMC with ATC Conversion / Fix

**Chaz** · 29-07-2015

Originally Posted by Gary

Looking at his email, it looks like he left it up to you to read through the specification sheet to see if it will work or not.
Looking at the details on the encoder output, this is very poor and not even a connector accessible form the outside of the box, so will require going into the driver and connecting to the ABZ, but this is only 3.3V and also very unacceptable to esd and electrical noise.
If is was just a single ended encoder output with a good 5V signal and a connector on the outside of the box, then this would not be a problem, by connecting a standard board to convert from single ended to differential.
If you want me to put something on paper i can do.
It makes absolutely no sense to have a good driver like this being limited by no differential encoder output.

Thanks. Agreed. I like the drive, its nice kit. I love the open source idea but its not what I needed.
It feels like I bought a car with an Aircon and then when it doesn't work, I get told to have some pipes and gas installed to make it work.

Appreciate if you can draft something up for me and sent it across.

Many thanks.

**Gary** · 29-07-2015

emailed you back.

**Chaz** · 29-07-2015

Originally Posted by Gary

emailed you back.

Thanks, appreciated.

**Chaz** · 09-08-2015

Quick update time.

Machine is running but I need to do more tweaking. Need to recheck the PID control but generally fairly happy. Taken most of the backlash out both mechanically and with Mach 3.

Needed to move the mill but no method available. The engine hoist I bought isnt wide enough. Got an idea to buy some heavy duty castor wheels. Tried to fit them but the metal I wanted to put them on was too flimsy. Came up with a good plan, had some 20mm Alu plate for something else but milled myself 4 plates to basically mate the wheels to the load bearing beams, using the original shafts.

Some pics below, the CNC has now been moved to the location I wanted it in the garage. Last pic is of a new X plate but I ended up having a problem with it, so it wont be used.

**Chaz** · 09-08-2015

I wanted to thank a few people that have made this conversion possible. Its not 100% complete but mostly there. Still need to get ATC working and build a new control panel.

JazzCNC
i2i
Gary from Zapp (please support him)

There have been others too but I would not have completed this conversion without their help.

Many thanks.

**uli12us** · 19-10-2015

Can you post some pics of the ATC parts. I have a (I think) similiar machine with Pickup ATC and know what you need for this part. IIRC aou want to buy 110V solenoids for the pneumatic harness. I would better use only 24V, you can them
connect directly to the PLC output (if the amperage of the Output is enough)

**fidia** · 27-10-2015

Can you post a few pics of the mill in position. Nice idea with the castors. Will do the same to mine I think . What kind of rapid feedrates are you getting on the machine?

**Chaz** · 27-10-2015

Originally Posted by uli12us

Can you post some pics of the ATC parts. I have a (I think) similiar machine with Pickup ATC and know what you need for this part. IIRC aou want to buy 110V solenoids for the pneumatic harness. I would better use only 24V, you can them
connect directly to the PLC output (if the amperage of the Output is enough)

Sorry, are you looking for info or advising me?

I can post pics on the weekend, anything specific you need? There is also a drawing on the Denford main forum that shows how the bits fit together.

Some here:-

http://www.denfordata.com/pdfs/triac..._600dpi_hq.pdf

and

http://www.denfordata.com/bb/viewforum.php?f=47