martyscncgarage wrote: ↑Fri Aug 16, 2019 2:13 pm
For encoders you need 5vdc line driver/differential encoders. If it's running now and you can run the motors to listen to them for condition great. Save your pennies. The Centroid control will make a world of difference provided you have the basic skills and can follow a wiring diagram. My video series on All in One should be a great help as well.
Marty
I am really keen on the centroid approach and modern control ability, especially as I don't have experience with any control yet so seems daft to learn one, then another.
I read another post by somebody using linuxcnc and they needed to change output. Apparently if you take the encoder board out of Heidehein it will output much higher resolution (2500 ppr) and also a quad b and index pulses per revolution (whatever that means).
Electrical and automation are much of what i do in my business but more PLC and industrial process control so this is all a learning curve.
Nice to have something to sink the old grey matter into though
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One last suggestion. Take a video of the machine running, cutting a part, show the motors and control cabinet while operating. Then post it to YouTube. You can then sell all your boards and servo drives on eBay and likely put a good dent in funding the purchase of AllninOne!
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
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martyscncgarage wrote: ↑Fri Aug 16, 2019 2:34 pm
One last suggestion. Take a video of the machine running, cutting a part, show the motors and control cabinet while operating. Then post it to YouTube. You can then sell all your boards and servo drives on eBay and likely put a good dent in funding the purchase of AllninOne!
Great idea, I was wondering what the controller etc would sell for and I bet just the servo drives alone would be worth good money as they are all working.
I will ponder everything over the weekend and see what I decide on.
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martyscncgarage wrote: ↑Fri Aug 16, 2019 2:34 pm
One last suggestion. Take a video of the machine running, cutting a part, show the motors and control cabinet while operating. Then post it to YouTube. You can then sell all your boards and servo drives on eBay and likely put a good dent in funding the purchase of AllninOne!
Great idea, I was wondering what the controller etc would sell for and I bet just the servo drives alone would be worth good money as they are all working.
I will ponder everything over the weekend and see what I decide on.
Get model numbers off the drives and boards. Search eBay sold listings for an idea. Some times it takes a bit of time, but in general has worked for me.
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
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I used the Centroid sold encoders to update the SEM motors on my Bridgeport EZ=Path lathe. The encoder swap was straight forward. I used the Allin1DC to drive the motors and again, setup was a breeze. As Marty mentioned, keep the transformer and rectifier assembly. It keeps your cost down and less to re-wire.
A big vote from me for the Allin1DC and encoder upgrade!
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travasky wrote: ↑Fri Aug 16, 2019 6:10 pm
I used the Centroid sold encoders to update the SEM motors on my Bridgeport EZ=Path lathe. The encoder swap was straight forward. I used the Allin1DC to drive the motors and again, setup was a breeze. As Marty mentioned, keep the transformer and rectifier assembly. It keeps your cost down and less to re-wire.
A big vote from me for the Allin1DC and encoder upgrade!
Buying the encoders and cables from Centroid is a plus, they sell the entrance cable servo motor cap too....just saves aggrivation!
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
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travasky wrote: ↑Fri Aug 16, 2019 6:10 pm
I used the Centroid sold encoders to update the SEM motors on my Bridgeport EZ=Path lathe. The encoder swap was straight forward. I used the Allin1DC to drive the motors and again, setup was a breeze. As Marty mentioned, keep the transformer and rectifier assembly. It keeps your cost down and less to re-wire.
A big vote from me for the Allin1DC and encoder upgrade!
Thanks for the info. After putting other thought into it I am going to follow Marty's advice. I will put spindle back on machine and run the thing to get proof of working and then sell the controller and servo drives to help fund the conversion.
I will change the encoders rather than mess around with intermediate boards as that will be 30 odd years old also and likely to fail soon.
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Could the Centroid be programmed to stop and allow me to change gearbox ratio when required?
If I didn't go the VFD route could the Centroid be programmed to stop and prompt to set speeds?
Both of those things could be done.
The most straightforward path is probably to put it in custom M3 and M4 macros, so you can check the programmed speed (S code) whenever the spindle is starting in Auto mode.
Presumably no such intervention is needed when starting the spindle in Manual mode.
It is probably more trouble than it is worth to try to catch speed changes (new S codes) that are programmed without a new M3 or M4.
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