Fire Detection System Planning Guide

Remote transmission
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Siemens Building Technologies 007836_a_en_--.doc
Fire & Security Products 03.2004
20 Remote transmission
Most fire detection systems are linked to a remote transmission system. Therefore
in case of alarm (alarm stage 2) the fire detection system must initiate the remote
transmission device (RT-device).
Remote transmission device
– Located in cabinet of control unit
– Required space depends on the type of remote transmission device
– Powered by 24VDC of the fire control unit
– Single channel (alarm + fault) or multi channel (several alarm channels)
– Disabling/enabling via B3Q700 (FC/FT)
Interfacing
– Via output contacts and special control in-/outputs of the E3G070
E3G070
B3Q700 (CPU)
I-Bus
Interfacing via E3G070
K2
24V
RT-device
FC700A
alarm fault