Tcs Video Systems; 6-Wire Operation - TCS AMI Series Product Information

Rule for 20 Ohm:
Distance from TCS:BUS
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
10
20
30
40
50
60
70
80
90
100
TCS TürControlSysteme AG, TCS Hotline Germany: hotline@tcsag.de
Fax: +49 (0) 41 94 / 9 88 129  www.tcsag.de
®
power supply to the most
16
Line diameter
0.6 mm
Loop resistance in Ω
1.28
2.55
3.83
5.10
6.38
7.65
01/2013
0.8 mm
0.71
1.43
2.14
2.86
3.57
4.29
5.00
5.71
6.43
7.14
Subject to technical changes.
PI_AMI1xx00_uk