Up to 10 voice alarm devices can be connected into one network using the synchronization function.
It is not recommended to connect the signaling devices into large, extensive networks because damage to the cable / signaling device during a fire can damage all fire signaling (in the best case only synchronization is lost).
Fire alarm announcements should be adapted to facility specificity, the contents of announcements depend on the way the SAP system is installed in a building. The contents of an announcement should be arranged by the designer of the SAP installation or a person in charge of fire protection in a given building.
It is advisable to use a speech synthesizer to create recordings, an example of such a synthesizer is the IVONA synthesizer available on the website www.ivo.pl . After registering you can create and download your own announcements. A user can replace a text with an acoustic signal – file*.wav. a received acoustic file can be uploaded in an alarm device as a sound by means of the UN-3 device or copy a file in a digital form to the SG-Wgw device.
Synchronization is required when sounding corridors, rooms in which two or more alarm devices may work at the same time, for example, sounding of hotel corridors. Alarm devices should be synchronized within one level whereas levels do not need to be synchronized. In case of lack of synchronization of alarm devices, an emitted announcement may be incomprehensible as a result of different starting times of emission of announcements by alarm devices.
The SG-Wgw alarm device has a working mode of an alarm device with a trigger (an announcement alarm device). In this working mode the alarm device needs a voltage supply and additionally a trigger signal. Upon providing voltage supply the alarm device is in the stand-by state waiting for a trigger impulse. As soon as the alarm device receives an impulse it emits an announcement, then is back in the stand-by state waiting for another trigger impulse. However, it is not possible to emit a single…
In SG-Pgw2 and alarm devices there is no option to assign a different siren for individual messages. The choice of an alarm signal is made for all messages.
To trigger 1 message it is only needed to connect 2 wires. If there is a need to synchronize several signaling devices, connect the system according to the scheme available in the product description.
In the up to 3 messages mode – each message can have max. 30 seconds. In the up to 10 messages mode – the size of files with messages must not exceed 2MB in total. A single message cannot last longer than 30 seconds.
The SG-Pgw2 sounder meets the requirements of EN 54-3:2001+A1:2002+A2:2006 Fire alarm systems – Part 3: Fire alarm devices – Sounders with change 2, which specifies the requirements for sounders with voice announcements. The scope of tests provided for sounder devices in accordance with the abovementioned standard does not provide for measuring speech intelligibility. It is worth remembering that voice alarms are not a substitute for voice alarm systems, for which such measurement is required.
Accordingly, the requirements for voice alarms are those that are contained in EN 54-3:2001+A1:2002+A2:2006. When placing sounders, you can additionally use the Technical Specification CEN/TS 54-14:2004 and the American standard NFPA 72: National Fire Alarm and Signaling Code. However, the main requirement remains to provide the required volume of generated sound.
It is recommended to connect up to 3 SG-Wgws devices. With a larger amount, sound distortion may occur.