System overview
Responsibility of the operator
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Building Technologies
A6V10211094_f_en_--
Fire Safety
2015-12-15
C-NET detector line
The C-NET is a monitored bus line using 2-wire technology, to which up to 252
devices per loop or 32 devices per stub can be connected. C-NET line devices are
automatic fire detectors, manual call points, I/O components, transponders, and
indication and operating devices such as floor repeater terminals. With the
exception of the FDCIO223 transponder, which requires its own power supply, all
C-NET line devices are also supplied with operating voltage via the C-NET. There
is a line separator integrated in each line device. In the event of a C-NET fault
(short-circuit/wire break), the defective line segment is isolated by two neighboring
line separators. When using a loop, the connected devices remain ready to detect.
With a stub, the faulty line segment is isolated after the line separator. The fault is
displayed on the station.
C-WEB/SAFEDLINK
Up to 32 Cerberus PRO stations can be networked via the C-WEB to form a
system. Redundant operations are guaranteed by the network's ring topology.
Thanks to the C-WEB, system-wide alarming and access to individual fire detection
system devices is possible. There may be a distance of up to 1000 m in the C-
WEB between two stations. At greater distances, special repeaters or even optical
waveguide connections can be used. A second network card can also be fitted for
stricter fail-safe requirements (EN54).
The network connection can also be realized by the Ethernet with limitations.
However this does not satisfy the requirements of EN54.
More details of networking can be found in the system documentation.
