Fire Alarm Door Release Relay

To prevent transient voltage spikes from burning out the control relay contacts an auxiliary relay with big contacts should be installed between the fire alarm control relay and the door holders.

Fire alarm door release relay.

Developed to be compliant with the bs 7273 4 2015 code of practice for the fail safe operation of door release mechanisms and door holders. Today open area smoke detectors are most often used. The door release module is an interface designed to enable eaton s addressable fire alarm systems to work in tandem with door holders retainers. The module is compatible with fike s cyber cat and cheetah xi intelligent control panels.

According to section 5 14 6 3 when smoke alarm units are used to release doors they must be listed for smoke control. Then the auxiliary relay takes the voltage spike and the fire alarm control relay only has to turn off the auxiliary relay. The door access control reader and the electric lock can be wired to the fire alarm in a number of different ways. It ensures that in the event of a fire or a fault on the fire alarm system any doors that are.

These contacts can be used to control external appliances such as dampers fans door holders etc. Schematic diagram showing how to land the wires when using an auxiliary. Relay module 55 043 provides two sets of form c dry relay contacts that switch together one dpdt relay. We can use a relay to drop power to the electric lock or use an ip device that drops power using the network connection or add a power control box that drops power when the fire.

In this next section you will learn why.