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  1. #131
    Quote Originally Posted by Clive S View Post
    Attachment 24048Attachment 24049Attachment 24050
    The black tube into the reg. is feeding the air into the blue water filter with WD in it (just behind the gantry) and also to blow the chips away. You can see the cooling water 1Ltr on the gantry.

    The fan is 120mm
    Ok,

    I realise now i need a solution for connectionbox sensor to cy cable.

    Thanks for the pictures.

    I am gonna think about through gantry cable ways for x1 x2 sensors..

    Some extra planning.

    Grtz Bert.

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  2. #132
    Quote Originally Posted by Clive S View Post
    I use something like this on the back of the gantry with less that 1 ltr of water. https://www.aliexpress.com/item/80mm...ceBeautifyAB=0

    but you can get one with a little bigger and fit a 120mm fan.

    Re the VFD 2.2Kw is at the mains side so at the motor side rough figures prb. about 4A per phase ish.

    re the 4mm tube I find that more than enough flow. I have it at about 8 bar and regulate it down on the gantry.
    Hi Clive S,

    Do you think the leadshine dm856 will do for my setup?

    http://www.leadshine.com/productdeta...DM&model=DM856


    Or will i gain lots in buying am822 drives.
    I am not sure i can still buy them oem ... Though somebody said there is nothing wrong with a good copy.

    They look alright @80v /5.6 amps

    I have the cnc4you 4amp 4nm nema23 steppers.

    Grtz. Bert

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  3. #133
    I have no experience of them but they look OK I see they only go up to about 5.6A might be getting a bit close!!

    I have purchase three of these:-

    https://www.ebay.co.uk/itm/2DM860H-2...7453%7Ciid%3A1

    But not tested yet.
    Last edited by Clive S; 28-04-2018 at 09:43 AM.
    ..Clive
    The more you know, The better you know, How little you know

  4. #134
    Quote Originally Posted by Clive S View Post
    I have no experience of them but they look OK I see they only go up to about 5.6A might be getting a bit close!!

    I have purchase three of these:-

    https://www.ebay.co.uk/itm/2DM860H-2...7453%7Ciid%3A1

    But not tested yet.
    Hi Clive S,

    I am unsure what using 4 out of 5.5 amps will do to the drives life time.
    25% headroom sounds ok.


    I do like the idea of having an alarm ouput also.

    Do you have any idea on when you have the drives up and running?


    Grtz. Bert.



    Verstuurd vanaf mijn SM-A320FL met Tapatalk

  5. #135
    Quote Originally Posted by driftspin View Post
    Hi Clive S,
    I am unsure what using 4 out of 5.5 amps will do to the drives life time.
    25% headroom sounds ok.
    I do like the idea of having an alarm ouput also.
    Do you have any idea on when you have the drives up and running?
    Grtz. Bert.
    Verstuurd vanaf mijn SM-A320FL met Tapatalk
    No sorry the control box is built but the mill it is going on will take some time. I purchased the above because am882's are getting hard to find.
    ..Clive
    The more you know, The better you know, How little you know

  6. The Following User Says Thank You to Clive S For This Useful Post:


  7. #136
    Quote Originally Posted by Clive S View Post
    No sorry the control box is built but the mill it is going on will take some time. I purchased the above because am882's are getting hard to find.
    Hi Clive S,


    I have been researching some more.

    Do the spec of stepper memtion rms or peak amps? Looks like the 2dm856 driver is rated 4 amp rms ...... 5.5 peak.

    https://cnc4you.co.uk/resources/Step...1-03%204Nm.pdf

    Are those rms values?
    Ill send an email to cnc4you and find out.

    Grtz. Bert.

    Verstuurd vanaf mijn SM-A320FL met Tapatalk

  8. #137
    Quote Originally Posted by driftspin View Post

    Are those rms values?
    Ill send an email to cnc4you and find out.
    They are Peak ratings, most motor ratings if data sheet doesn't show both will be the peak rating.

    Also, I have some of the 2DM860H but only tested on the bench at the minute. however, they seem nice smooth with low motor heating even after being stood for hours. This is always a good sign because lose motor sat on bench is open to resonance and the drive is obviously handling any resonance because nice smooth operation.
    Will tell better when put on a machine but so far I wouldn't tell the difference between these and AM882.

  9. The Following 2 Users Say Thank You to JAZZCNC For This Useful Post:


  10. #138
    Quote Originally Posted by JAZZCNC View Post
    They are Peak ratings, most motor ratings if data sheet doesn't show both will be the peak rating.

    Also, I have some of the 2DM860H but only tested on the bench at the minute. however, they seem nice smooth with low motor heating even after being stood for hours. This is always a good sign because lose motor sat on bench is open to resonance and the drive is obviously handling any resonance because nice smooth operation.
    Will tell better when put on a machine but so far I wouldn't tell the difference between these and AM882.
    Awesome! Awaiting your final judgement since I have those drivers :)
    Have you altered any settings via software or only dip switches?

    Skickat från min SM-G955F via Tapatalk

  11. #139
    Quote Originally Posted by driftspin View Post
    Hi Clive S,


    I have been researching some more.

    Do the spec of stepper memtion rms or peak amps? Looks like the 2dm856 driver is rated 4 amp rms ...... 5.5 peak.

    https://cnc4you.co.uk/resources/Step...1-03%204Nm.pdf

    Are those rms values?
    Ill send an email to cnc4you and find out.

    Grtz. Bert.

    Verstuurd vanaf mijn SM-A320FL met Tapatalk
    Ok so answer of CNC4YOU... it is peak.. 3 amps RMS.

    I guess ill order the leadshine dm856 then.

    Save a few bucks to spend on some other things.

    Grtz Bert.


    Now i have to find some other way to hook up a big flashing red alarm light.



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  12. #140
    Hi JAZZCNC,

    Peak it is... so... i can save a few bucks.

    Thanks Bert.

    Quote Originally Posted by JAZZCNC View Post
    They are Peak ratings, most motor ratings if data sheet doesn't show both will be the peak rating.

    Also, I have some of the 2DM860H but only tested on the bench at the minute. however, they seem nice smooth with low motor heating even after being stood for hours. This is always a good sign because lose motor sat on bench is open to resonance and the drive is obviously handling any resonance because nice smooth operation.
    Will tell better when put on a machine but so far I wouldn't tell the difference between these and AM882.
    Verstuurd vanaf mijn SM-A320FL met Tapatalk

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