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  1. 06-08-2019 #2
    AndyUK's Avatar
    Lives in Southampton, United Kingdom.
    AndyUK
    Last Activity: 15-12-2024 Has been a member for 7-8 years. Has a total post count of 472. Received thanks 103 times, giving thanks to others 43 times. Referred 1 members to the community.
    Quote Originally Posted by DaveZ View Post
    Hi
    I have a previous thread which I will update shortly

    I have constructed a desktop CNC

    I have a power supply with chinese characters above the 2 terminals
    I need to connect it to the spindle which has 2 wires black and red
    Wires from the power supply has a foil sheath.

    1. Will I do damage if I connect the wrong way around?
    2. How can I check which way to wire spindle. (black and red)
    3. Power supply is connected and has power
    4. Is it a good idea to earth spindle body?

    Many thanks

    DaveZ
    Making the assumption you're talking about a 2 phase DC spindle, in theory, the spindle is just a motor - so which way up you connect it would determine which direction it spins. Without more information, I can't say for certain, but I wouldn't expect there to be a problem if it was connected with the opposite polarity.

    Always a good idea to earth the spindle, but be sure to avoid earth loops.
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