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IndustryArena Forum > CNC Electronics > Leadshine > MX3660 with SainSmart Relay
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  1. #37

    Re: MX3660 with SainSmart Relay

    Thanks!

    The main thing is that I have four distinct and switchable relays now, which is a huge improvement. I'm close to being functional again should I get the leakage worked out.

    Any guess on what quantity of resistance I would need to control the leakage should I attempt that?

    I can test with the SSR as a shunt this evening as well.

  2. #38
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    Join Date
    Mar 2007
    Posts
    1984

    Re: MX3660 with SainSmart Relay

    whats you mains supply voltage ?

    120 V AC as in NA
    or
    230V AC as in Europe ( in my part of the UK my supply is over 240V AC)

    with a 240V supply you could try 68K ( 68000 ohms) 1 W

    John

  3. #39

    Re: MX3660 with SainSmart Relay

    I’m in the US, so 110/120 AC.

    Edit: fat fingers, lazy proofing

  4. #40
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    Join Date
    Mar 2007
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    1984

    Re: MX3660 with SainSmart Relay

    for a 120 V AC supply you can use a 15 K (15000 ohm ) 1W resistor to test
    for long term use use a 2W resistor

    120/15000 = 8 mA

    120V x 8 mA = 0.96 W



    for 140V supply use a 22 K resistor

    140 / 22000 = 0.006 mA

    140V x 0.006 mA = 0.89 W

    use a 2W resistor

    John

  5. #41

    Re: MX3660 with SainSmart Relay

    14k if my math is right?

  6. #42

    Re: MX3660 with SainSmart Relay

    Okay, 2w it is.

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