Panasonic EBL512 G3 5000, Руководство по планированию

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Panasonic Electric Works Nordic AB
MEW01351 Rev: - Planning Instructions Fire alarm system EBL512 G3, V1.1.x
151
The following table is a help when calculating the cable length and/or
the number of units. The table is based on the current consumption at
the lowest power supply voltage allowed i.e. 21 V DC by battery
back-up (no mains).
Recommended cable type is LIHCH-TP 2 x 2 x 0.75 mm
2
.
Wire resistance for this cable is approx. 25 ohm / 1000 m.
Up to sixteen units can be connected but it is depending on the type of
units and the cable (type and length).
Number
of units
Allowed cable resistance (ohm) / length (m)
Units
1735, 1736
Units
1728, 1735, 1736,
1826
138
, 1828
138
&
no printers 1835
Units
1728, 1735, 1736,
1826, 1828 &
one
139
printer 1835
8 8 / 160 3 / 60 -
7 11 / 220 4 / 80 -
6 17 / 340 10 / 200 -
5 20 / 400 16 / 320 -
4 25 / 500 21 / 420 4 / 80
3 34 / 680 28 / 560 10 / 200
2 50 / 1000 42 / 840 16 / 320
1 100 / max. 1200 84 / max. 1200 18 / 360
Explanation: 8 (ohm) ÷ 25 (ohm wire resistance per 1000 m) = 320 m
but the wire goes from the c.i.e. to the last unit and back to the c.i.e.
again, i.e. the cable length = 320 (m) ÷ 2 = 160 m.
NOTE!
The table is based on the recommended cable type. If a cable with
greater area is used the wire resistance (ohm per 1000 m) will be
lower and the possible cable length will be longer.
It is also possible to use an external power supply, e.g. 3366, when a
greater number of units are required or if a longer cable length is
required.
138
Max. six 1826 / 1828 units.
139
Printing will only be performed if and when the door in the ext. FBP is
being opened. If the door is not opened until after all the alarms are reset,
there will be no printing.