Panasonic Eco Solutions Nordic AB
MEW01622
Rev: -
EBL128 Planning Instructions V2.0.x
156
21
Cable types
A fire alarm installation is a safety installation and it is important that
the cables used are correct types and according to national regulations.
Fire alarm cables should, when possible be installed away from other
cables, in order to avoid disturbances caused by these.
21.1
COM loop cables
Loop topology is used for highest safety, i.e. the cable connected in
EBL128, returns back to EBL128. See drawing 128-21. In case of a
single break on the loop the communication starts in both directions
and a fault is generated (and a message is displayed).
The cable length is depending on the number of and type of loop units,
the type of cable, etc. See chapter "COM loop cable length", page 159
and drawing 128-11.
ELQYB 2 x 1 mm (0.75 mm
2
) or equivalent (twisted pair).
ELQYB 10 x 2 x 1 mm or equivalent when feeder line is required.
NOTE!
If screened cable is used, the screen shall be connected as
close as possible to each loop unit and only incoming (or outgoing)
cable screen to the EBL128 earth point, see drawing 128-01.
21.2
Ext. FBP / EPU / AAU cables
RS-485. See drawing 128-23. Cable length < 1200 m to the furthest
situated ext. FBP / EPU / AAU.
LIHCH-TP 2 x 2 x 0.75 mm
2
or equivalent (twisted pairs).
21.3
Conventional zone line cables
See drawings 128-26 & -30.
Multipurpose I/O unit 3361 and expansion board 4580 respectively.
ELQRB 2 x 0.6 mm (0.3 mm
2
) or equivalent. Max. 50 ohm cable
resistance. For the 4580 zone line inputs with end-of-line capacitor
470 nF, max. 50 nF cable capacitance.
21.4
Alarm device cables
See drawings 128-22 and -28.
ELQRB 2 x 0.6 mm (0.3 mm
2
) or equivalent.
ELQRB 10 x 2 x 1 mm (0.75 mm
2
) or equivalent when feeder line is
required.
NOTE!
Addressable Alarm devices (sounders, etc.) are connected
directly on the COM loop.
21.5
Other equipment cables
Ex equipment (
I
ntrinsically
S
afe) for hazardous areas, see drawing
128-32.
External indicator (LED), door release magnets, etc.:
ELQRB 2 x 0.6 mm (0.3 mm
2
) or ELQRB 10 x 2 x 1 mm (0.75 mm
2
)
or equivalent.