Introduction to Addressable Fire Alarm Systems
Addressable fire alarm systems have traditionally been associated with the larger, more complicated applications. However with downward price trends, they have become feasible for smaller systems that would have historically been designed with conventional fire alarm equipment.
- Each detector communicates directly with the control panel, so it knows the exact location of any alarm reported.
- Each detector can be assigned a courtesy label to help identify the device.
- The detector reports a smoke value to the panel. The Panel decides if this is an alarm. This allows some panels to make detectors more or less sensitive according to current conditions, or time of day.
- Detectors, sounders, Manual Call Points and interfaces are all connected to the same loop of wire.
- Detectors are assigned to zones by the panel, which allows for easier zone changes if the building layout is altered at a future date.
- Addressable panels usually have an event log to recall past system events.
- Some addressable panels allow for complicated Cause & Effect Programming, where outputs are only triggered by certain detectors.
Basic Schematic of Addressable Systems