Hi,

I'd just like to quickly double check that my proposed Leadshine AM882 driver alarm circuit for is ok.

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I looked at the manual last night and I've worried myself that I'm misunderstood it. The typical configuration diagram in the Leadshine manual shows a 2k ohm resistor on the ALM+ feed:

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I think this resistor is simply there as a current limiter - if it was absent when the alarm went off you'd have a short to ground. Since I have the relay coil in the circuit I think this will have the same effect but I'm not 100% sure (as you can probably tell I'm new to electronics).

Reading the Wikipedia page on open collectors it looks like I have the coil in an unusual place. I think you would normally place the coil before the alarms (e.g. in the positive leg of the circuit) is that right?

Cheers