Oh Blimey I bought a CNC Lathe !!!!

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awemawson:
The inductive proximity sensor shows up in picture 1448 in case you haven't spotted it. (Camera being held over the back of the assembly)

(And for those of you worried that that gate lead nowhere - here it is with the grass just beginning to grow where that huge pile of earth was)

dsquire:

--- Quote from: awemawson on June 23, 2013, 03:17:37 PM ---The inductive proximity sensor shows up in picture 1448 in case you haven't spotted it. (Camera being held over the back of the assembly)

(And for those of you worried that that gate lead nowhere - here it is with the grass just beginning to grow where that huge pile of earth was)

--- End quote ---

awemawson

I always figured that you would find a good use for that gate even though it did seem to be out in the middle of nowhere. With all that you have been up to, it's making me tired just reading about it.

I think that I managed to find the sensor now that you told us where to look. Glad to see that it was an easy fix and cheap. Let's hope that they are all like that. I'll be following along as you solve the next piece of the puzzle. :D :D

Cheers :beer:

Don

vtsteam:
One more task off the list! :thumbup: :clap:

RussellT:
I'm reading this thinking that soon we're going to be reading about it making chips. Well done.

Projects like this one always make me wonder how the machine got into that state though. I can see that if the machine stopped working it could be sold - but then you'd expect to find one fault - or one fault and some sign of bodging the others. In practice though you find several faults that have apparently developed simultaneously while the machine hasn't been touched - usually on those things that you buy thinking "It'll be a simple fix".

Russell

awemawson:
Well in fairness I never expected it to be an easy fix. The previous owner had sporadically tried over a period of more than a year. He did involve the makers who diagnosed some of the problems with the controller, but he couldn't afford their quoted estimate of about £7K for parts to fix the controller. Unfortunately I think I'm now finding not only the original problems, but those introduced by the several people who have gone this way before me. However I'm pretty sure now that the hardware of the controller is ok - I'm down to the options & parameters that tell it what to do, and it's various peripheral bits and bobs like servo amps, sensors, etc. However I WILL GET THERE (someday!)

There are two dual 'zero speed relays' that monitor the various axis servo motors and form part of the safety chain preventing the cabinet door being opened when they were turning. I know one at least is faulty, and currently I have linked all four sections out in the relay logic so I can continue fault finding. They are rather obscure however eBay in the US has produced one for me which arrived today. I suspect they are fixable, and now I have a spare I'll venture inside a faulty one and see if they respond to diagnosis.

This is what they look like:

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