Application - Siemens 7XV5662-0AA00 Directions For Use Manual

7XV5662-0AA00

Application

The communication converter (KU–XG) is a peripheral device connected to the protection
device, which allows serial data exchange between two protection devices. A communicati-
on network is used for this purpose. The digital synchronous interfaces X.21 and G.703–
64 kBit/s (G.703.1) are used as ports.
On the opposite side a second communication converter converts the data back into data
legible for the second protection device (Figure 12). This conversion allows two protection
devices to exchange data with each other. With two communication converters and one
communication connection, it is therefore possible to send data from one protection device
to a second device and to receive data from there.
The connection to the protection device is made noise-proof via a fibre-optic link, the FO5
module. FO5 means that this is an optical 820–nm plug-in module in the protection device,
which carries out a clock recovery from the transmitting clock of the communcation network.
For more details, see SIPROTEC
The data transfer between the protection devices represents a point-to-point connection, it
is bit-transparent and synchronous.
The communication converter supports simple commissioning of the entire communication
path. It has a relay contact to output a "device ready" signal (GOK / DR) and also has an
extended range power supply unit covering the entire normal DC and AC auxiliary voltage
range. In addition, all important operating states are signalled by LEDs.
Communication network
➀
Figure 12 Typical structure of a communication line
C53000-B1174-C134-7
®
device manual.
Communication
device
X.21
G.703.1 electrical
DCE
➀
Permanent line
➁
Copper cable
Short distance
X.21
electrical
G.703.1
DCE
Communication
converter
KU–XG1
X.21
FO
G.703.1
➁
DTE
➂
Fibre-optic cable
max. 1.5 km (1mile)
KU–XG2
X.21
FO
G.703.1
➁
DTE
English
Protection
optical
device 1
FO5
➂
Protection
device 2
optical
FO5
➂
33