Old 06-27-2016, 10:07 PM #1
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Default converting galvos and pin assignments

Hello, I just got a new used pair of galvos. They are GSI Lumonics g325D.
I would like to install them into a case. I have a showcard with a lot of patterns I really like, but the old galvos they went to have a vastly different pin layout.

The new galvos have this layout assignment on there with part of its connector


The old galvos use this connector here

Can I make this work with the showcard I have? Its clear there are less pins.



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Old 06-27-2016, 10:18 PM #2
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Default Re: converting galvos and pin assignments

Need more details and more pictures of the components. Just now I have no idea what's what.

What's in the picture you posted? Is that the old galvos? New Galvos? Is the show card pictured? What model are the old galvos/show cards? Was it just a MIDI show card with a bunch of stuff pre-loaded onto it or was it a show card that could take an SD card or some such with .ILDA files on it?
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Old 06-28-2016, 12:36 AM #3
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Default Re: converting galvos and pin assignments

Which one is the problem? The one with the 16 pins on it seems to have a pretty good description of the pin functions right on the pcb.

The ones with 6 pins for each axis could also be quite standard, but they are just the galvo mechanism and require the appropriate driver board to operate. These pins generally just carry drive current and some feedback information, but without the matching driver they could be hard to get to work.
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Old 06-29-2016, 09:04 PM #4
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Default Re: converting galvos and pin assignments





That is the showcard. The thing that doesn't have an assignment layout is the other set of galvos that came with the showcard, but I am pretty sure this description here is from the same galvos I found on ebay. My biggest concern is that I don't want to burn out the galvos, but if most of the pins are simply unused then I feel it would be worth it to make it work or at least try to make it work and see if I can get results.
If they definitely won't work, then which showcard can I buy that will work with my galvos?Could I possibly program something to remux those signals to translate properly like in some sort of flash chip or something?


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Old 06-29-2016, 10:08 PM #5
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Default Re: converting galvos and pin assignments

I just noticed that there are actually two inputs. X1 and X2. The connector diagram was for the x2.
This is the x1
It seems like a lot of these pins have several things going to the same pins so it only has a total of 6 controls
The controls reads
1/2/3 XH
4/5/6 XL
7/12V Sen X
8 sig GND X
9 sense +x
10 sense-x

Does that seem a bit more manageable to switch now? The voltages are different, but I know how to step down voltage if I need to. The showcard has ilda and I am assuming it will be somewhat possible to adjust the galvos somewhat inside the software right?


Last edited by Glowkitten; 06-29-2016 at 10:19 PM.
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