16
01/2013
TCS TürControlSysteme AG, TCS Hotline Germany: [email protected]
Subject to technical changes.
Fax: +49 (0) 41 94 / 9 88 129
www.tcsag.de
PI_AMI1xx00_uk
Rule for 20 Ohm
:
Distance from TCS:BUS
®
power supply to the most
distant front-door or indoor station:
at
0.6 mm
wire diameter
max. 160 m
,
at 0.8 mm
wire diameter
max. 280 m
TCS video systems
6-wire operation
The 6-wire operation is standard operation mode. Video operation, where two separated
masses (b and M) are used.
The conduit of the lines is determined by structural conditions and is only limited by its
length.
Observe when selecting the cable length:
the loop resistance must not exceed
8 Ω at a-b and M-P (table 1).
In case of loop resistance >
8 Ω: plan mulitple wiring of the strands (double twisted
lines).
Optional strand or star shaped wiring.
Do not use more than 20 video indoor stations per strand. For systems with more video
indoor stations you have to provide video distributors (FVY1200, FVY1400).
Up to 64 front-door stations (16 of them video front-door stations) and almost an unlim-
ited number of indoor stations can be connected within one system polarity-free (a/b |
polarity-free only in 6-wire operation). Thus, a suitable power supply and control unit is
to be selected.
Table 1: loop resistances
Line length
a-b/ M-P
in m
Line diameter
0.6 mm
0.8 mm
Loop resistance
in Ω
10
1.28
0.71
20
2.55
1.43
30
3.83
2.14
40
5.10
2.86
50
6.38
3.57
60
7.65
4.29
70
5.00
80
5.71
90
6.43
100
7.14
