Retrofit Schaublin 32...(?)

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26 Nov 2021 21:45 #227690 by Alexandre
tommylight post=226641 userid=17274
(...)
Alexandre, it would be best to start a new topic and upload more pictures of the machine and cabinet, diagrams you have, and yank on of the drives out and check if there is silk screening on the board regarding pinouts.

Hi.
I hope I'm not exaggerating when creating a new topic, I'm still new to the forum.

I have a Schaublin CNC milling machine with a faulty controller. She had a spindle problem, I called a technician to solve it, the technician walked 5 hours back to her and didn't solve anything.
The next day I turned on the machine and errors appeared on the controller saying that the memory was corrupt.

I had bought that machine for a low price with a malfunction on the Y-axis digital scale. After identifying the cause, I went to solve this malfunction and the machine started working on the three axes. I created a program in it so that it could go from a limit in X, Y and Z to the opposite limit and the machine was already doing that automatically, it was missing for the spindle to work.

As I hadn't saved any of her files yet, after these errors appeared I was unable to put her to work with that controller.
The technician dismissed himself saying that when he left none of that had happened, so it was nothing he did (that's what he said), but I don't see any other reason.

I wanted to retrofit it, I'm willing to rack my brain doing the retrofit, but there are things I don't know if I'm capable of doing it, and if I can't get help here on the forum, I know I won't be able to do it alone. My main problem I think is the PLC, I don't know anything about that type of programming.
The manuals I have for the machine are the spindle drive manual and the electrical schematic of cabinet.
About the axis drives I have nothing.
I would appreciate any help please. if you can...

I leave some pictures...

 
 
 
 
 
 
 
 
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30 Nov 2021 14:03 #228012 by andypugh
Do you know what the PLC does? LinuxCNC has a software PLC built in, but it is possible that the functions of the existing PLC are already covered by LinuxCNC, or can be easily performed in the HAL layer.

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03 Dec 2021 23:16 #228326 by Alexandre
Yes, I have some knowledge of what the PLC does and why it is necessary, but it is a type of programming that I do not know and in this part I will have to rely on the help that the forum linux can give me here.
I know for example that when a program is running, the handwheel must be inactive by the PLC. I also know that when I select a specific spindle speed, it is the plc that, once configured, determines which gear to engage. If I want to change a tool, the plc only leaves it if the spindle is stopped, etc...

About the axis drives, I have the Control Techniques FNC4 manual. The FNC5 is very similar, and through the controller manual that's still there I think I can figure out how the axis drives are connected, so I can figure out what's currently done there.
 

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04 Dec 2021 10:57 #228339 by andypugh

I know for example that when a program is running, the handwheel must be inactive by the PLC.


That is built-in behaviour with LinuxCNC.

I also know that when I select a specific spindle speed, it is the plc that, once configured, determines which gear to engage.

That can be handled with a LinuxCNC HAL component. I know there is one for the Maho gearbox. (and I hae a much simpler one for my 2-gear lathe)

If I want to change a tool, the plc only leaves it if the spindle is stopped, etc...

This would be typically paet of the tool changer logic. There are a number of ways to do this, including with a hardware PLC. But also with HAL components or software PLC.

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