07/2013
13
TCS TürControlSysteme AG
Subject to technical changes.
Mail: [email protected]
ISH3030-0140 UK 2A
General information on the conduit in TCS audio systems
The conduit is determined by structural conditions and is only limited by ist length.
Note when selecting the cables: the loop re-
sistance can amount max. 20
Ω (table)
In compliance to the max. permitted loop re-
sistance the wire cross-section can be doubled,
that means, that for one wire two lines can be
used. The lines have to be twisted.
In case of using shielded cables: connect the
shielding with each other and put it one-sided on
mass (b-wire) in the power supply
Optional strand or star formed wiring
table: loop resistances
cable length
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
8.93
5.00
80
10.20
5.71
90
11.48
6.43
100
12.76
7.14
150
19.13
10.71
200
25.51
14.29
250
31.89
17.86
300
38.27
21.43
Principle loop resistance
Resistance measurement
None of these devices (AS, IS or FE) should be
located more than 20 Ohm away from the power
supply and control unit (VS).
Switch off 230 V / 50 Hz of the VS.
Install a-b short-circuit at VS.
Other devices don’t disturb the measurement,
they can be connected.
Measure the resistance at a/b of the last IS or AS.
