My TOS MCV 1000 machining center Retrofit with Siemens 611

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07 Jan 2024 15:38 - 07 Jan 2024 17:28 #290109 by santy
Hello everyone
Recently I came across this machining centre, which I bought. 


it had a working 410 heidenhain controller which I am selling, as i don't like the interface and usability, and as I am restauring the machine fully including a lcnc retrofit with mesa 7i92 and 7i77.

here are some pictures of the build. I will be updating this post!


The ball screws have some backlash, so I will be using linear scales as encoders with the intention to mitigate this backlash.
Though I managed to interface lcnc with the original heidenhain encoders, this seems a more viable approach.


 
Last edit: 07 Jan 2024 17:28 by santy.

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20 Jan 2024 10:59 #291184 by andypugh
I wonder if re-balling the ballscrews would help with the backlash? Though that's not a job for the faint-hearted.

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20 Jan 2024 12:25 - 20 Jan 2024 12:30 #291200 by besriworld
I replaced all the radial axial bearings. Steel balls can be changed for the nut. A good starting point is 0.005 or 0.01um on large balls.
A simple mechanical problem is not a good idea to fix with software.  The screw plays the main function for hard milling
Last edit: 20 Jan 2024 12:30 by besriworld.

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20 Jan 2024 19:00 #291215 by santy
Yes I am also working on this.
the 611 is kicking my head in some basic thing I’m probably not getting right. 
these drives were using an analog signal to command the movement of the servos, and 24v signals to enable or disable them.


im supplying analog to the driving “analog setpoint” terminals 56/14 connections,

im suppling three phase power to simodrive
I’m supplying 24v+ to terminal 9, 24v+ to terminal 663, located in the Y axis control spot on the simodrive.

Im also supplying 0V (from the 24v reference) to terminal 19 which is in another place
 (not in the “axis servos” part of the simodrive, but in the main part on the left)

I’m not using AS1 or AS2 I’m assuming these are a relay which will be closed when drive is enabled to tell my cnc everything is ok?

someone who has experience in these 611 drives can advise please? Maybe there is somewhere else I should enable things? Or something I must do . I know for sure both the motors and drives are working perfectly.

 
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20 Jan 2024 20:58 #291221 by radom
but what is happening? you have status leds on the left, which one are on? yellow one? display in the middle, what does it says
do you use built in 24v supply from pin 9 or external one

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21 Jan 2024 00:15 #291230 by santy
The only light present at the left is green.

Does it have an internal PSU? Can you reference the terminals for this ? I couldn’t find it

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21 Jan 2024 07:39 - 21 Jan 2024 09:05 #291246 by radom
LED green –Ext. enable signal not available (terminal 63 and/or 64 missing
you want yellow led to be present
terminal 9 is your 24V supply, you don't need anything else
just connect terminal 9 to 63,64,65,663
I don't know if you have a brake on Z axis motor, then you need to check where is it connected before applying voltage to axis 56/14
 
Last edit: 21 Jan 2024 09:05 by radom.

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22 Jan 2024 13:04 #291343 by santy
ok . i will test this now. i hope i haven't fucked up by supplying 24v to 9 in the first place. first will check the brake thing on the Z but i think it does have something

thank you, will update.

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24 Jan 2024 22:16 #291554 by santy
Well…. No change in color light yet. Might be something disabling the drives.
what about AS1 or AS2? any ideas on what  do they do?



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25 Jan 2024 16:12 - 25 Jan 2024 16:13 #291605 by radom
as far as I remember AS1 is a relay
assets.euautomation.com/uploads/parts/da...6sn11231aa000da1.pdf
on the left side I see you took a wire from terminal 64 but what about terminal 63? I can't tell from the photo,
terminal 63 is third pin higher from the 64

 
Last edit: 25 Jan 2024 16:13 by radom.

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