12
11/2012
TCS TürControlSysteme AG
TCS Hotline: +49 (0) 41 94 / 98 81 188
Subject to technical changes.
FAX: +49 (0) 41 94 / 98 81 29
Mail: hotline@tcsag.de
PI_FBI4500-0100.doc 2A
General information on the conduit in TCS video systems
6-wire operation
The 6-wire operation is the standard operation mode. It is video operation with two sepa-
rated ground lines (b and M).
The cable routing is determined by the structural conditions and is only limited by the
length.
Observe when selecting the cable length: the loop resistance a-b and M-P must not ex-
ceed a maximum of
8 Ω (table 1).
If the loop resistance exceeds
8 Ω: use multiple wiring of the strands (double drilled
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, use video distributors (FVY1200, FVY1400).
Up to 64 front-door stations (16 of them video front-door stations) and an unlimited
number of indoor stations can be connected polarity-free (a/b) within a system (polarity-
free only in 6-wire operation). Thus, a suitable power supply and control unit must be
used.
Table 1: Loop resistances
Length of the lines
a-b/ M-P
in m
0B
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
