I am trying to utilize a 12vdc to dry contact relay from a smart PSU output but no matter what I still get a closed contact energised or de-energised. any ideas?

Does the relay work if you put a straight neg and pos on it from the Aux supply? If so, how is it connected and how are you testing the output?

What do you want to triggers the relay?

Does the relay work if you put a straight neg and pos on it from the Aux supply? If so, how is it connected and how are you testing the output?

Thamks for reply, I can get the led to go on and off with the test toggle on the keypad and the relay clicks but still get a closed circuit on my meter.

It sounds like the relay is shot then or wired wrong. Use a meter on the output and are if its changing as required. Also try 12 dc on the relay and are if It's working.

How are you wiring the relay trigger?

Thamks for reply, I can get the led to go on and off with the test toggle on the keypad and the relay clicks but still get a closed circuit on my meter.

I have the pos strait from the 12v and the neg from o/p 1 on the smart rio. then a pair in c & n/c

Have you metered out the voltage from the Aux 12vdc and the output when triggered?

Also the other side of your n-nc is that clean, could be a short on there.

Have you metered out the voltage from the Aux 12vdc and the output when triggered?

Also the other side of your n-nc is that clean, could be a short on there.

Normally open stays open all the time too. there are 2 realays and both are the same either they are both shot or more likely wired wrong. dont really know where to go with it maybe I am missing something?

You have to check the voltage is changing when testing the output.

What relays are they? As you say are they correctly wired?