12v Relay

[uksparks]

Let me look in the instructions for the alarm... ill be back

 

[uksparks]

Ok, its a Castle Enforced alarm, see photos from the instructions.

It says, the IO board says it has a max current output of 70mA, but then below it says the PGM/SAB outputs are 250mA continuous?

Any thoughts as im a little stumped now...

 

[uksparks]

right way up

 

[tazz]

Presume the system is using wireless bells....so the bell output should be 250mA, which should be fine for your relay.....test first with meter, set alarm off, you should get 12v across bell and +12v terminals. and no voltage when rest.....
If all ok...connect bell to terminal 7 on relay, and +12v to terminal 2 on relay.

 

[gnuuser]

Ok, its a Castle Enforced alarm, see photos from the instructions.

It says, the IO board says it has a max current output of 70mA, but then below it says the PGM/SAB outputs are 250mA continuous?

Any thoughts as im a little stumped now...

View attachment 26801View attachment 26802

i would suggest first using a solid state relay to switch the load to the coil relay or contactor
solid state relays draw very little current

but tazz is right test out the circuits before making a decision

 

[tazz]

The bell sab outputs are designed to switch strobes and sirens direct, should be fine with a relay.

 

[uksparks]

Thank you very much for the pointers here, yes its wireless at present.

Ill give it a try tomorrow probably.

Which are the SAB outputs on the picture? Im not too sure.is it the D1 D2 etc..?

The solid state relay, do you feel I should put it in, presumably you take the 12v feed from the alarm, to the solid state relay, then that output to the other relay?

So im looking for a DC to DC 12v solid state relay yes?

 

[tazz]

forget about solid state relays, output is terminals Bell and +12v as in my previous post.
If you are still unsure confirm with Pyronics

 

[Guest77]

Thank you for the mild abuse, I appreciate that there is a drawing on the back, it would have been more helpful if labelled thats all.

I was presuming that 2 and 7 were the 12v feed and the others were the NO or NC contacts, just wanted some clarification.

Ill stick with this.

2 coil +
7 coil -
1 com 1
3 NO 1
4 NC 1
8 com 2
6 NO 2
5 NC 2

No worries your welcome, we like you thats why it was mild :biggrin:

 

[tazz]

Always here to help.....its my job...!!!

 

[uksparks]

Thanks lol. I'll probably give it a try tomorrow and see what happens, I'll put my ear defenders on this time as last time I took the cover off i was shut in the cupboard with it going off full whack!

My my idea is for the new house I'm moving in to next week, I'm starting a fresh with the security as there's none. Im going to be putting down lights all round the soffits and 100w led floods at the back so although on separate switches etc, I'll be able to have all security lighting come on in one shot should the alarm go off. Just means my HD CCTV will have a. Better chance of seing what's going on.

 

[UKMeterman]

One comment, be sure to keep the wiring for the selv (12V) coil at least 6mm (1/4) inch away from the mains wiring, or sleeve one or both of them. You need this distance to ensure the SELV stays as SELV, due to creepage and clearance issues. I know some may argue that a smaller gap is required but I am trying to keep it simple.

 

[tazz]

This is why the relays mounted on alarm circuit boards cannot be used for mains voltage, as my previous post, using external boxed relay....6mm or a physical barrier ensure clearance. The relay or contactor also offers clearance, aslong as low voltage and extra low voltage cables enter enclosure at separate points.

 

[Paul P]

Don't forget you diode connected across the coil to stop the back emf. Reverse polarity connected.

Or you could go for one of the handy little relays.

Just google handy little relay.

 

[davesparks]

Don't forget you diode connected across the coil to stop the back emf. Reverse polarity connected.

Or you could go for one of the handy little relays.

Just google handy little relay.

Look at the picture he's posted, the diode is already built in to the relay he has bought!