Thread: New start

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  1. #131
    No idea who that is.. and I get the feeling I should be glad for it ;)

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  2. #132
    More bracket power!
    The cablecarrier gets crooked in the end.. but havent fastened all the bolts yet.
    Need to shorten some so they dont stick out hehe




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  4. #133
    Quick question?
    Been making my cablechain brackets from 5mm thick steel angle (had it laying about)

    Brackets for proximity swithes..
    Ok to use 3mm thick aluminium brackets from unknown ali quality?
    Guess they have to be resistent to vibrations?

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  5. 3mm will be fine, the switches have no mass really so vibration will not be an issue.

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  7. #135
    Quote Originally Posted by Davek0974 View Post
    3mm will be fine, the switches have no mass really so vibration will not be an issue.
    Thanks :)

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  8. #136
    Not much happening at my end other than a question.

    My steppers drives accept both ac and dc.
    Is it worth it to do the rectifier and caps to get dc or can I just run ac directly and trust my cheapo drives to have enough capacitans to handle back emf?


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  9. #137
    Quote Originally Posted by Nr1madman View Post
    Not much happening at my end other than a question.

    My steppers drives accept both ac and dc.
    Is it worth it to do the rectifier and caps to get dc or can I just run ac directly and trust my cheapo drives to have enough capacitans to handle back emf?


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    I personally would go down the conventional tried and tested route with a toroidal transformer and rectifier with caps.
    ..Clive
    The more you know, The better you know, How little you know

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  11. #138
    Quote Originally Posted by Clive S View Post
    I personally would go down the conventional tried and tested route with a toroidal transformer and rectifier with caps.
    Im leaning towards that route...
    There is no way there could be thats big caps in the drives.. so I guess that if I go ac my toroidal transformer will get a beating? Especially since its a 500VA and not overspeced for my application?

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  12. #139
    Quote Originally Posted by Nr1madman View Post
    Im leaning towards that route...
    There is no way there could be thats big caps in the drives.. so I guess that if I go ac my toroidal transformer will get a beating? Especially since its a 500VA and not overspeced for my application?

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    I considered using AC with my my AM882h's but when one of them blew and I replaced it I got an AM882 which is DC only.

    I might be wrong here but I think if the drive is rated for AC you wouldn't need caps they're only there to smooth out the DC. That said it wasn't hard I was scared of the PSU build and yes I did blow one up ;) but it really was drill a couple of holes, bolt stuff on and solder 6 wires just double check you wiring and don't plug the wires into the rectifier the wrong way round.
    http://www.mycncuk.com/threads/10880...60cm-work-area My first CNC build WIP 120cm*80cm

    If you didn't buy it from China the company you bought it from did ;)

  13. #140
    Quote Originally Posted by Desertboy View Post
    I considered using AC with my my AM882h's but when one of them blew and I replaced it I got an AM882 which is DC only.

    I might be wrong here but I think if the drive is rated for AC you wouldn't need caps they're only there to smooth out the DC. That said it wasn't hard I was scared of the PSU build and yes I did blow one up ;) but it really was drill a couple of holes, bolt stuff on and solder 6 wires just double check you wiring and don't plug the wires into the rectifier the wrong way round.
    Haha ;)

    Well Im not scared of the process.. but I got a shitload of smaller caps so alot more than 6 solderpoints :D
    Im about halfway through but I cant solder with any kids around.. they just have to touch everything ;)

    I figured since the drives provide the motors with dc then some internal conversion must happen in the drives if using ac supply...?

    Anyway.. it will look cool if I finish so I guess I will stick to the original plan!

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