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  1. Chin45

    MSR38-D/DP safety relay circuit

    I'm trying to understand MSR38-D/DP. The safety relays I am familiar with has redundant chains; a (+) channel and (-) channel. Looking at the diagram, MSR38-D/DP seems to have S11 & S12 as one chain, and S21 & S22 as the other chain. So, as the picture below shows, since the chain circuits...

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