Binary Signal Transmission Via Two-Wire Copper Cable With Blocking - Siemens 7XV5673 Device Manual

5.2.2

Binary Signal Transmission via Two-Wire Copper Cable with Blocking

I/O Mirror
7XV5673
BI1
BI6
BO 1
BO 6
Figure 5-7
The application shows the optical connection of an I/O mirror to a communication converter 7XV5662-0AC01
(KU-KU) for transmission via copper cable, which establishes a connection to a two-wire copper cable (for
example telephone cable). 5-kV blocking is integrated in KU-KU. An additional blocking transformer makes
20 kV possible.
Transmission between the binary signal transmission and KU-KU takes place interference-free via 62.5 μm/
125 μm multimode fiber optic cables. The fiber-optic cables are prepared with ST plugs.
KU-KU has a wide-range power supply unit of DC 24 V up to 250 V and AC 115 V/AC 230 V.
The asynchronous baud rate of max. 38.4 kbit/s of the binary signal transmission depends on the available syn-
chronous bandwidth of the transmission route which is 128 kbit/s. For larger distances, 2 KU-KU distances can
be cascaded.
Further information can be found in the manual for the device 7XV5662-0AC01. A maximum of 6 binary single
signals can be transmitted bidirectionally.
A typical application is the directional comparison of a directional overcurrent protection via economical pilot
wires, where the definite time-overcurrent protection is connected to the binary signal transmission via con-
tact and binary
SICAM I/O Unit, 7XV5673, Device Manual
E50417-H1040-C484-A3, Edition 05.2012
5 kV isolation voltage
in converter
KU-KU
E
FO
max.
O
38.4
Pilot wire (2-wire) up to 8 km
kbit/s
depending on the consistence of the pilot wire
2 KU-KU distances can be cascaded
FO: 2 multimode FO 62.5 μm/125 μm
with ST plug, max. 1.5 km
KU-KU: Communication converter - copper 7XV5662-0AC01
Binary Signal Transmission of 6 Signals via Two-Wire Copper Cable with Blocking
input.
5.2 Applications for Remote Transmission of Binary Signals
20 kV with
isolation transformer
7XR9516
KU-KU
E
5 Applications
I/O Mirror
BO6
BO1
FO
BI6
max.
O
38.4
kbit/s
BI1
7XV5673
45