7i77 for analog +/-10v and upgrade to geckos later
- oldcarguy85
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09 Jul 2021 12:59 #214093
by oldcarguy85
7i77 for analog +/-10v and upgrade to geckos later was created by oldcarguy85
hey all,
I'm very new to all this. I'm just starting a retrofit project on an old bridgeport BTC-1 BOSS 7.2 machine. I'd like to try to use the existing NC400 servo drives to get started. However, I don't know If i'll use them long term and I don't even know if they work (seems the main LSI-1 board is toast on the boss controls, so can't test). If I buy a 5i25/7i77 setup, can i use that for both the NC400 drives as well as gecko 320x drives in the future?
Thanks so much!
-Jordan
I'm very new to all this. I'm just starting a retrofit project on an old bridgeport BTC-1 BOSS 7.2 machine. I'd like to try to use the existing NC400 servo drives to get started. However, I don't know If i'll use them long term and I don't even know if they work (seems the main LSI-1 board is toast on the boss controls, so can't test). If I buy a 5i25/7i77 setup, can i use that for both the NC400 drives as well as gecko 320x drives in the future?
Thanks so much!
-Jordan
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- andypugh
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09 Jul 2021 13:30 #214100
by andypugh
Replied by andypugh on topic 7i77 for analog +/-10v and upgrade to geckos later
I don't think so. The G320X takes step/dir position commands, whereas the 7i77 will be outputting analogue voltage velocity commands.
If you do decide to swap the drives, then you could either look for analogue-controlled drives (lots of AMC drives on eBay) or add a Mesa step-dir card such as the 7i85S or 7i78 to the expansion port on the 5i25.
If you do decide to swap the drives, then you could either look for analogue-controlled drives (lots of AMC drives on eBay) or add a Mesa step-dir card such as the 7i85S or 7i78 to the expansion port on the 5i25.
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- rodw
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09 Jul 2021 19:20 #214132
by rodw
Replied by rodw on topic 7i77 for analog +/-10v and upgrade to geckos later
Pretty sure the geckos have some non standard signalling that is difficult to work with. I seem to remember one member returned them in the end.
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- tommylight
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09 Jul 2021 21:07 #214137
by tommylight
Replied by tommylight on topic 7i77 for analog +/-10v and upgrade to geckos later
Error out / reset in
it is the same pin in Geckos
I still have 4 of them i think collecting dust in the shop, need to get 1 out and put it to work tomorrow.
it is the same pin in Geckos
I still have 4 of them i think collecting dust in the shop, need to get 1 out and put it to work tomorrow.
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- rodw
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12 Jul 2021 08:08 #214369
by rodw
Replied by rodw on topic 7i77 for analog +/-10v and upgrade to geckos later
Tommy, I think with the number of motors you use that dust kind of sums it up!Error out / reset in
it is the same pin in Geckos
I still have 4 of them i think collecting dust in the shop, need to get 1 out and put it to work tomorrow.
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