4
– Wireless Version
43
In the example above, BM 25AW (unit D) is the only communication link between A,
B, C and E, F, G. If BM 25AW (unit D) had a fault (low battery for instance) or if an
obstacle were to disrupt communication between D and E or D and B, then all BM
25AWs would report a fault failure (steady flashlight according to case No. 2
– see
table of alarms).
IMPORTANT
:
■
Note that the gas detection remains effective and that BM 25AW (unit D) would still
locally alarm in the presence of gas. It is the same for each BM 25AW on the
network. Only the alarm would not be transferred to the whole network.
■
To ensure maximum network reliability, a BM 25AW should always communicate
with at least two neighbors.
Figure 29 : group concept (read details below)
A long press on the « acquit » button
forces the system to a new identification of
the nodes present on the network. BM 25AWs that do no communicate are ignored
without triggering a fault condition. In the example above, the communication between
D and E is down. A long press on the « acquit » button of BM 25AW (unit D) resets the
network. All BM 25AWs communicating with D automatically launch a new
identification in turn. On one side, BM 25AWs A, B, C and D discover each other and
form a first group. On the other side, BM 25AWs E, F and G still report a
communication failure since they do not receive data from the BM 25AWs of the newly
formed group. A long press on the « acquit » button of one BM 25AW (unit E, F or G)
Содержание BM 25A/AW
Страница 1: ...BM 25A AW Area Gas Monitor Part Number NP25AEN Version C 4 User Manual ...
Страница 10: ...10 BM 25A AW Instruction Manual Product Overview Figure 2 Product Overview ...
Страница 18: ...18 BM 25A AW Instruction Manual ...
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Страница 75: ...9 Special Instructions 75 CSA Control Drawing for BM 25A AW Connections ...
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Страница 79: ...10 Declaration of EC Conformity 79 ...