28
07/2012
TCS TürControlSysteme AG
Subject to technical changes.
E-
Mail: [email protected] • www.tcsag.de
PI_IVW3012_0x10_uk.doc
Table 1: loop resistances
cable 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
Principle loop resistance
Measurement loop resistance
None of the devices (AS, IS or FE) is to be installed
each further than 20 Ohm away from the power
supply control unit (VS).
Rule:
Switch off 230 V / 50 Hz of the VS.
Install a-b short-circuit at the VS.
All other devices do not disturb the measurement
and can stay connected.
Measure the resistance at a/b of the strand of the
last IS or AS.
8 Ohm:
max. 65 m distance AS-VS at 0.6 mm diameter
max. 115 m distance AS-VS at 0.8 mm diameter
AS front-door station
VS power supply and control unit
IS
indoor station
FE
extended function
Max. number of IVW3012 in 6-wire operation
small and medium-
sized systems
max. number of
IVW3012
AS front-door station
VS power supply and control unit
IS indoor station
TÖ door opener
VBVS05
6
larger systems
max. number of
IVW3012
BVS20 + NGV1011
30
Note: The number of the front-door stations that can be
connected is limited and is described in their product infor-
mation!
short-circuit a, b
here
