Com Loop - Panasonic EBL128 Planning Instructions

Panasonic Eco Solutions Nordic AB
MEW01622 Rev: -
4.1
The FBP is used by the fire brigade personnel to see which alarm
point / zone having activated the fire alarm(s), silence alarm devices,
reset alarms, etc. In the display (LCD, 2x40 alphanumeric characters),
the information displayed on the first row is depending on how many
alarm points / zones having activated fire alarm, convention and
language.
On the second row is, for the activated alarm point / zone, an alarm
text shown, if programmed. For more detailed information regarding
the display information, see the EBL128 Operating instructions.
Required fire brigade personnel manoeuvres are performed via the
FBP in EBL128 or via an external FBP 1826 / 1828.
Instead of external FBPs 1826 / 1828, German Fire Brigade Control
Panels (Feuerwehr-Bedienfeld) FBF 2003 and/or German Fire
Brigade Indicator Panels (Feuerwehr-Anzeigetableau) FAT 2002 can
be used.
The CP is used by the EBL128 owner, service personnel, etc. to
"communicate" with EBL128, e.g. for monthly tests, disablements
commissioning, maintenance and service. A User name and Password
for different access levels are required. A keypad is used to get access
to the menu tree, i.e. main and sub menus for data input / output,
manoeuvres, etc. The CP also holds several system status LEDs.

COM loop

EBL128 has one COM loop (0), to which the loop units are connected.
Connections to "J1:1-4" according to drawing 128-21. On the COM
loop can theoretically 255 COM loop units be connected (i.e. address
1-255). The exact number of units that can be used and the cable
length are depending on the cable type (cable resistance) and the total
COM loop unit current consumption (i.e. the type and number of loop
units). See chapter "Current consumption", page 162 and drawing
128-11. Each COM loop unit has a technical address (1-255) and
each alarm point and zone line input has a presentation number (Zone-
Address). See the EBL128 Operating Instructions for more
information.
If one or more addressable Short Circuit Isolators
will be divided into "segments", i.e. the part between two isolators or
between EBL128 and one isolator. In case of short-circuit on the
COM loop only the affected segment will be isolated, which will
minimise the number of units "disabled" to max. 32. See Figure 9,
page 50.
Break (cut-off) or short circuit on the COM loop
Normally EBL128 communicates with the units in the A-direction
only and is in the B-direction checking the COM loop voltage only,
4
4313 (4370) and also units with built-in isolator, i.e. 4433, 4439 and 4477.
EBL128 Planning Instructions V2.0.x
17
4
are used, the loop