TELEDYNE OLDHAM SIMTRONICS Everywhereyoulook BM 25A, User Manual

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BM 25A/AW
AREA GAS MONITOR
USER MANUAL
26 NPB25AEN
Revision D.0
Figure 24 :
In the example above, BM 25AWs E and F are the last links between the controller and the rest of the
network. If communication between BM 25AW F and MX 40 fails, then BM 25AW E continues to provide
communication between the BM 25AW network and the controller. If BM 25AW A goes into gas alarm or
fault condition, then MX 40 receives information and passes the gas alarm on all others BM 25AWs.
The alarm sequence differs depending on whether a BM 25AW sends information (gas alarm
or fault) or receives information (alarm transfer). This allows for quick identification of the BM
25AW that is in alarm so that appropriate action can be taken.
Main
BM 25AW
Secondary BM
25AW
Controller
Case Cause Flash Siren Flash Siren Channel status
1. Fault (no
communication at all,
sensor fault, low
battery, etc.) Steady Yes No No Fault
2. Alarm 1 1 Hz 1 Hz 0.5 Hz 0.5 Hz Alarm 1
3. Alarm 2 2 Hz 2 Hz 0.5 Hz 0.5 Hz Alarm 2
Tableau 2 :
Controller
Mode – Table of events
Two-way communication