Page 212 - Advanced Course

KNX ADVANCED COURSE

Alarms are divided into:

Internal alarm
External alarm
Remote alarm

The internal alarm only triggers the alarm inside the property. No external signalling
devices are activated and no messages are issued outside the building.
The external alarm trips the signalling devices such as strobe lights and/or sirens.
The emergency services are notified with the remote alarm using telecommunication
options.

3.4 Set Mode / Arming Device
If an intruder alarm system is set, an alarm is triggered when an attempted break-in is
detected. If the system is unset, there is no alarm.
The system is set or unset using an arming device.
There are electromechanical, intelligent and proximity arming devices. An
electromechanical arming device consists of a latching mechanism which is linked to a
mechanical lock-out of the access door.
With the intelligent arming device, the system is set e.g. using a combination lock (by
entering a number combination). This arming device must also be linked to a mechanical
lock-out of the access door.
The proximity arming device consists of a sensor unit, an evaluation unit and a distribution
board.
Key-operated transponders, which contain the actual identification, can be read in and
deleted. Used together with the locking element in the door frame as well as a key bolt
switching contact for lock monitoring, the mechanical lock-out of the access door is
guaranteed.
The connection of the arming device and lock-out can be carried out electrically or
mechanically. It must however be ensured that it is not possible to enter the protection
area accidentally when the intruder alarm system is set (positive drive).

Home and Building Management Systems KNX Association
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