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Panasonic Electric Works Nordic AB
MEW01349
28.4
Action
Text in display
"Menu"
"↵ "
A1 Calibration of supervised outputs
A2 Sensitive fault detection mode
A3 Service mode for COM-loop
A4 Display current consumption in unit
A5 Display current consumption on COM-loop
A6 Display statistics for communication
A7 Activate address setting mode for DU
Scroll to menu A3
A3 Service mode for COM-loop
"↵ "
Service mode for COM-loop:
Rev: -
Operating Instructions Fire alarm system EBL512 G3, V1.1.x
Service mode for COM-loop (H5/A3)
This mode can be used when commissioning an installation and by
maintenance. The COM loop communication (polling) will be turned
off but there is still voltage (24 V DC) on the loop in the A-direction
only, in the B-direction only or in both directions at the same time.
A volt meter can be used, e.g. to check the voltage / voltage drop on
different places on the loop or to find a single break on the loop.
It is recommended to do this check also when EBL512 G3 is power
supplied via the backup battery only, since the voltage can be up to 3
V lower (compared with the rectifier voltage) due to the battery
condition, backup duration, etc.
The "Service mode for COM-loop" is indicated by LED Fault /
Disablements "General disablements" (L10).
If you log off this menu, the "Service mode for COM-loop" will be
terminated automatically.
NOTE! If short-circuit is detected when a COM loop is in service
mode, the loop will be disabled and a fault message will be displayed:
FAULT: Short-circuit SCI A <-> SCI B,
loop x, control unit xx
...independent of where the loop short-circuit is situated.
0
CU: 00
A Direction
B Direction
Both
119
Comments
According to chapter
"Access code for service /
maintenance (H5 and
H8)", see page 116.
Write COM-loop number
and control unit number,
then select "A-direction",
"B-direction" or "Both".
"↵ ".
Press
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