TELEDYNE OLDHAM SIMTRONICS Everywhereyoulook BM 25A, User Manual

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BM 25A/AW
AREA GAS MONITOR
USER MANUAL
NPB25AEN
Revision D.0
31
IMPORTANT :
•
The two groups run independently and alarm or failure events from one group cannot
be transferred to the other group.
•
When the obstacle (the truck in our example) is gone, the communication between E
and D resumes automatically without the need to restart identification. The two groups
merge together to form only one group.
To start a new identification, keep pressing the « acquit » button for 3 seconds. The display
successively shows 3, 2, 1 then « confirm ». Release the « acquit » button and press again.
Figure 30 : reset sequence of a group of BM 25AWs
NOTE :
•
When a new identification has started, communication errors are inhibited for one
minute.
•
Once the network healing is completed, it is possible that one or several BM 25AWs
remain isolated and stay in fault mode (case No. 1 – Table of alarms). To acknowledge
this failure, turn the unit off or disable the radio communication from the maintenance
menu.
Adding a new BM 25AW to the network at a smart location overcomes the obstacle and
restores the communication between the two groups which then merge together. This healing is
automatic as long as BM 25AW (unit H) belongs to the same network (same 'Channel' ID).
Figure 31 : bypassing an obstacle by adding a new BM 25AW (H)