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  • Users: cha1n
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  1. cha1n

    Link 0V from different PSUs

    Hi, I'm in a situation where i have 45 machines, each with their own 24VDC power supply. I'm taking a +24VDC output from a limit switch and a start button on the machine and feeding them into a digital input card for a siemens PLC. The PLC card uses one common 0V for each +24VDC input to it...
  2. cha1n

    BS, IEC colour codes

    Hi, I'm trying to work out cable colours for a control panel. The colours for AC wiring seems quite well documented, but does anyone know any details for 24VDC wiring? I've been searching and i'm having trouble trying to find any convention. I think i read that there is a BS for machine colour...
  3. cha1n

    Selecting the correct circuit breaker

    Hi, I am a trainee control systems engineer and i'm currently designing a panel and i would like to know how to select the correct circuit breaker for my project. I spoke with a colleague in work and was horrified to find out that they guess the correct size and expect me to do the same. The...

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