BS EN 54-21:2006 pdf download – Fire detection and fire alarm systems — Part 21: Alarm transmission and fault warning routing equipment
5.3Indication of signals
The following signals shall be indicated at the routing equipment by separate light-emitting indicators for a)and b). Alternatively, the signals can be indicated at the ClE, in which case it is not necessary to indicate thesignals at the routing equipment.
a) The received acknowledgement signal from fire alarm receiving centre as defined in EN 50136-2-1:1998,5.5.
b) At least one common fault warning shall be used to indicate the following:
1) if the acknowledgement signal is not received at the routing equipment within 100 s for type 1 and240 s for type 2 (see Annex A, Table A.1) of the initiation of the transmitted fire alarm signal, a fault
warning shall be given;
2) a fault warning indicating a failure within the routing equipment (e.g. power supply failure), required to be indicated in accordance with this standard;
3) a fault warning indicating a failure within the alarm transmission network;
4) where the routing equipment is located in a separate enclosure from the CIE, an open circuit or
short circuit of the interconnection between the routing equipment and the CIE shall be indicated atthe CIE and a fault warning signal sent to the alarm receiving centre.
6 Alarm transmission and fault warning systems requirements
The performance requirements of transmission systems shall be as specified in Annex A.The verification of this performance is detailed in Annex B.
7 Design requirements
7.1General requirements and manufacturer’s declarations
The routing equipment shall comply with the design requirements of 7.3 relevant to the technology used.Some requirements can be verified by testing.Others (e.g. long-term reliability of the routing equipment) canonly be verified by inspection of the design and its accompanying documentation (product or systemspecification, reports etc.).
ln order to assist the process of design inspection, the manufacturer shall declare the following in writing:
a) that the design has been carried out in accordance with a factory production control system,which incorporates a set of rules for the design of all elements of the routing equipment;
b) that all the components of the routing equipment have been selected for the intended purpose and are expected to operate within their specification when the environmental conditions outside theenclosure of the routing equipment comply with class 3K5 of EN 60721-3-3:1995.
7.2.1 The manufacturer shall prepare installation and user documentation, which shall be submitted to thetesting authority together with the routing equipment. This shall comprise at least the following:
a) a general description of the equipment, including:
-functions relating to other Parts of EN 54,
-ancillary functions not required by this European Standard,
b) technical specifications of the inputs and the outputs of the routing equipment,sufficient to permit an
assessment of the mechanical, electrical and software compatibility with other components of the system(as described in EN54-1),including where relevant:
-the power requirements for recommended operation,
– the maximum and minimum electrical ratings for each input and output,
– information on the communication parameters employed on each transmission path,
-recommended cable parameters for each transmission path,
– fuse ratings;
c)installation information, including:
the suitability for use in the various environments specified in accordance with Annex A (e.g.the supplier specifies the performance parameters of the routing equipment in a data sheet,and it is these parameters together with the different parameters of the alarm transmissionsystem which have to fulfil the requirements of Annex A),
– instructions for connecting the inputs and outputs;d)configuring and commissioning instructions;
e) operating instructions;
7.2.2 The manufacturer shall also prepare design documentation, which shall be submitted to the testingauthority together with the routing equipment. This documentation shall include drawings, parts lists, blockdiagrams,circuit diagrams and a functional description to such an extent that compliance with this standardmay be checked and that a general assessment of the mechanical and electrical design is made possible.