Array ( [name] => FASCAEP [title] => Fire Alarm Systems - Cause and Effect Programming [content] =>
One of the advanced features available in modern fire alarm systems is Cause and Effect Programming. This allows an engineer, at any time in the system's life, to create complex behaviour which matches the fire strategy of the premises and can help to reduce unnecessary evacuations or fire service call-outs. Cause and effect programming requires a trigger condition (the "cause"), one or more devices the configuration applies to, and the behaviour you want those devices to exhibit (the "effect").
Below is an example of a possible cause and effect configuration taken from the Advanced MxPro 5 installation manual showing how phased evacuation might be implemented in a multi-storey building. In the example, the fire alarm panel has been told that when a fire occurs anywhere on Floor 7 all alarm sounders on that floor should be activated immediately. However, Floor 6 and Floor 8 behave differently: the alarm is completely delayed for 30 seconds after which the alarm tone is pulsed, which occupants should have been trained to recognise as a fire occuring on an adjacent floor. 2 minutes later the panel changes the alarm tone on Floors 6 and 8 to the building's standard alarm tone, indicating that full evacuation must take place.
Cause | Effect | |
---|---|---|
Sounder Group | Behaviour | |
Any Fire on Floor 7 | Sounders on Floor 6 |
Delay 30s Start pulsing Delay 120s Turn on |
Sounders on Floor 7 | Turn on | |
Sounders on Floor 8 |
Delay 30s Start pulsing Delay 120s Turn on |