Setup and function
16
Building Technologies
007025_i_en_--
Fire Safety & Security Products
07.05.2010
3.2
Function
3.2.1
Activation levels and sound intensity
The sounder base can be activated for two selectable event categories (e.g. pre-
alarm or alarm). The tone and sound intensity can be configured individually for the
two selectable event categories. Eleven tones are available, each with two sound
intensities.
The base sounder is connected to the connection for the external alarm indicator. It
does not therefore take up an address on the detector line. The control panel
communicates with the point detector via the detector line. The point detector
communicates with the sounder base.
When testing the function with a detector exchanger and tester FDUD292 or an
intelligent detector tester FDUD293, a quiet test sound can be activated.
A function test is only possible if a point detector is inserted in the sounder base
FDSB291.
Base sounders with product version ≥30, which are operated on point detectors
with product version ≥30, are synchronized to alarm sounders (product version ≥30
and higher). Base sounders and alarm sounders must be connected to the same
detector line for this to happen.
As of point detectors and sounder bases with a product version ≥ 30, when
commissioning, the presence of the sounder base is detected automatically with
certain control panels, e.g. with the FS20.
3.2.2
Line separator
All FDnet devices are equipped with a line separator.
The FDnet device is equipped with electronic switches which isolate the defective
part in case of a short-circuit on the detector line. The rest of the detector line
remains serviceable. On a loop line all FDnet devices remain fully functional after a
simple error.
3.2.3
Interface to service devices
A proximity interface (MC link) is available for commissioning and maintenance in
order to communicate with the detector exchanger and tester FDUD292 and the
intelligent detector tester FDUD293.
For details, see Documents 007227 and 009718.
