Com Loop Cable Length - Panasonic EBL128 Planning Instructions
Fire alarm system
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Also See for EBL128:
- Operating instructions manual (152 pages) ,
- Planning instructions (150 pages) ,
- User manual (42 pages)
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Panasonic Eco Solutions Nordic AB
MEW01622
Rev: -
22
COM loop cable length
On the COM loop can theoretically up to 255 COM loop units be
connected (i.e. address 1-255). The cable length and max. COM loop
current, are depending on the number and type of loop units and the
cable type, see Figure 30 and Figure 31, page 160 and 161
respectively.
One of the graphs in each figure has to be used depending on which
type of units that are connected to the COM loop. Start checking the
terms below for Graph 1, Graph 2 and finally Graph 3.
Graph with square dots (when "old" conventional smoke
1.
detectors requiring > 15 V are used).
Has to be used when at least one of the following units are used:
136
2335 / 3361
+ (2316, 2317, 2318 or 2321 plugged in a 2324)
2330 + (2316, 2317, 2318 or 2321 plugged in 2330 or plugged
in a 2324 connected on the external line)
2. Graph with circular dots (when no "old" conventional smoke
detectors requiring > 15 V, are used)
Has to be used when at least one of the following units are used:
2300 / 2304
2226 / 2821
2330 + (4318, 4350, 4352, 4452 and all other conventional
types
except 2316, 2317, 2318 or 2321 plugged in base 2330 / 2324)
136
2335 / 3361
conventional types except 2316, 2317, 2318 or 2321 plugged
in base 2324.)
2333
2340 / 2341
3. Graph with no dots
Shall normally be used, i.e. if Graph 1 or Graph 2 above not has to be
used.
The following two figures are showing graphs for maximum
conductor (wire) resistance and maximum cable length respectively.
Valid for the cable type ELQYB 2 x 1 mm (0.75 mm
Excel sheet
An Excel sheet is also available for an easy check of the current
consumption, cable length, etc.
EBLWin
In the COM loop pop-up menu select "Properties..." to open a window
showing the quiescent and max. current consumption for the COM
loop units connected on that COM loop.
136
The monitored input used as a zone line input (Z).
157
EBL128 Planning Instructions V2.0.x
+ (4318, 4350, 4352, 4452 and all other
2
) or equivalent.
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