24
01/2013
TCS TürControlSysteme AG, TCS Hotline Germany: +49 (0) 41 94/ 9 88 11 88
Subject to technical changes.
FAX: +49 (0) 41 94/ 9 88 129
Mail: [email protected]
PI_K30001-30004_uk 1A
Please observe when selecting the length of the lines: the loop resistance a-b and M-P
must not exceed 8
Ω (table 1).
Loop resistance > 8
Ω: plan multiple 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, plan to use 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 used.
Table 1: loop resistances
Length of the line
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
Principle loop resistance
Measurement loop resistance
None of the devices (AS, IS or FE) should be fur-
ther than 20 Ohm away from the power supply and
control unit (VS).
Rule:
Switch off the 230 V / 50 Hz of the VS.
Install a-b short-circuit at the VS.
All other devices are not disturbing the measure-
ment and can stay connected.
Measure the resistance at the last IS or AS at the
strand on a/b.
8 Ohm:
max. 65 m distance AS-VS by 0.6 mm diameter
max. 115 m distance AS-VS by 0.8 mm diameter
AS
front-door station
VS
power supply and control unit
IS indoor station
FE
extended function
short-circuit
a, b here
