Discuss Fire alarm sounder connected to door entry system help please in the Security Alarms, Door Entry and CCTV (Public) area at ElectriciansForums.net

Welcome to ElectriciansForums.net - The American Electrical Advice Forum
Head straight to the main forums to chat by click here:   American Electrical Advice Forum

R

Ross Harvey

Hi All

I have door entry system that i installed at a care home. it is a fail safe system but they didnt ask me to coonect to fire alarm system unitl after i had second fixed it all.

Long story short i have connected it (through a relay) to a local fire alarm sounder that gives out 24v on alarm conditions.
This works correctly but the fire panel shows a fault on the sounder system. Is there an easy fix? Maybe connecting a resistor? any help would be appreciated.

Thanks
 
I'm no expert on fire alarms systems by any means, but there are usually outputs on the panel PCB to connect to for things like this.
Someone will be able to set you right soon I reckon.
 
Thanks for your reply.
The reason i have connected to a local sounder is that the fire panel is the other side of the building and not easily wired back from.
 
maybe a blocking diode would get you out of trouble. however, it's not recommended to modify any fire alarm system without thoroughly considering the implications of failure to operate in case of a fire.
 
where's tazz when he's wanted.

Fire alarm sounder connected to door entry system help please 51OpAgmoRUL._AA160_ - EletriciansForums.net
 
yep. it conducts d.c. one way with a 0.6 volt drop, but blocks the other way. the diode used is selected according to the current requirement. not sure if it will cure your problem though.
 
yep. it conducts d.c. one way with a 0.6 volt drop, but blocks the other way. the diode used is selected according to the current requirement. not sure if it will cure your problem though.

Thanks for your reply.

How would i connect that diode? across the positive and neg going to my relay or just on the positive out in series? and would it also stop the relay from operating?
 
personally i wouldnt be messing around with a fire alarm in an old folks home
well risky if something goes wrong
lnstall a stand alone sounder
 
As tel mentioned a diode will do the job, however it isn't the right way and will need to be a very temporary fix, Tazz where are you ??
 
Connecting any release or shutdown to the sounder circuit, is a breach of regs......reason being, the doors will relock when system is silenced....and must only relock when the system is fully reset. All release, shutdowns must be off panel fire relay, or addressable output unit.
Example, fire alarm activates in nursing home, doors release, then staff member silences system while evacuating...doors relock trapping residence in building
 

Reply to Fire alarm sounder connected to door entry system help please in the Security Alarms, Door Entry and CCTV (Public) area at ElectriciansForums.net

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

YOUR Unread Posts

This website was designed, optimised and is hosted by Untold Media. Operating under the name Untold Media since 2001.
Back
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock