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  1. #2
    Does the other outputs work as expected ?

    Assuming the output transtor is open drain and grounds the relay coil terminal to switch the relay on

    With the power off you can use a multimeter to check the resistance between the negative supply terminal and each isolated output

    in the manual
    http://www.cncdrive.com/downloads/AXBB_E_manual.pdf
    see diagram 9.1.2 .Connecting a solid state relay (SSR)

    test between 24V0 and Ox

    You should find they are all open circuit unless the transistor controlling the relay is short circuited

    John
    Last edited by john swift; 11-08-2019 at 08:22 PM. Reason: correct typo

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