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  1. Quote Originally Posted by boldford View Post
    They are 1K.

    Ok, so 5mA collector current on 5v, 24mA on 24v.. so it wont fry :)

    EL817 optos are rated 35v, 50mA so should be ok.

    However, as I recall the diode has a 330R series resistor so forward current is about 10mA and those devices have a transfer ratio of about 1.1. So with 10mA in the diode the collector current is going to struggle to be more than 11-12mA which means the output volts wont drop below about 12 - 13v, so though it won't fry its not going to work. No good on 24v :(

  2. #22
    Help me out here a bit folks.

    After trawling through 300-odd pages of servo amplifier manual which seems to have every bit of information you could possibly want for the Mitsubishi drive - I can't for the life of me get the faintest idea how it could be connected to accept step & direction commands from Mach 3. What is the usual command process for controlling servos?

  3. #23
    m_c's Avatar
    Lives in East Lothian, United Kingdom. Last Activity: 6 Hours Ago Has been a member for 9-10 years. Has a total post count of 1,834. Received thanks 192 times, giving thanks to others 5 times.
    Not all servo drives can handle step/dir. Analogue control is far more common in industrial drives, so you need a suitable interface to take the step/dir and convert them.

    Search/ask on the Mach forum (www.machsupport.com/forum), as there are a couple people on there who know about servos.

  4. #24
    Quote Originally Posted by Peter. View Post
    Help me out here a bit folks.

    After trawling through 300-odd pages of servo amplifier manual which seems to have every bit of information you could possibly want for the Mitsubishi drive - I can't for the life of me get the faintest idea how it could be connected to accept step & direction commands from Mach 3. What is the usual command process for controlling servos?
    Give us some model numbers etc and I'll have look for you.

  5. #25
    Thanks Jazz

    Lexium LXM05CD10M2
    and
    Mitsubishi MR-J2s-10A
    Attached Thumbnails Attached Thumbnails Lexium_05_LXM05CD10M2.pdf  

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