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7XV5662-0AB00
Interface
R
X.21
G703.1
T
Figure 28 Test mode
Settings in the protection device
In protection devices 7SD52, 7SD610, 7SA52 or 7SA6, the active interface enables the
communication with the opposite protection device must be configured to "enabled". The
transmission rate must be set in both devices with 128 kBit/s. The difference of the transmis-
sion time in the transmit and receive direction can be set to 0.
Closing the cover of the CC–S
After changing the jumper setting, perform the above steps in reverse order to re-assemble
the device. Secure the cover of the converter with 6 screws and apply the auxiliary voltage
again.
Display and operation
There are four display and control elements on the CC–S
and one green LED and one push button located on the top side of the housing.
q
LED1, Error
The red LED "Error" directly signals the way in which the DR relay functions. For the LED
goes out, certain conditions must be fulfilled for X.21 and G703.1 (see Page 11).
q
LED2, TxD
The yellow LED "TxD" signals the transmission data that comes from the mains interfaces
and are transmitted to the protection device as an optical fibre –T.
C53000-B1174-C151-1
KU–XG
−
R
Logic1
−
T
Logic1
0
−
T
Optical fibre
Logic2
−
R
Optical fibre
Logic2
. These are one red, two yellow
0
English
−
T
−
R
51
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