Siemens 7XV5654-0BA00 Manuel page 43

7XV5654-0BA00 English
Synchronizing of maximal 6 SIPROTEC 4 devices via input R2
Input R2 is independent from input R1 and can be used for the same application. For
example R1 is used for an IREG-B telegram and R2 is used for a DCF77-telegram.
At the optical 820 nm input R2 an IRIG-B or DCF77-telegram from the GPS receiver
7XV5664-0AA00, which is designed for SIPROTEC 4 devices, is received. This optical
signal is converted to a corresponding electrical signal. This is switched to an electric
semiconductor output to a 9-pin Sub-D socket X1 to PIN 8 (+24 V) and PIN 4 (-24 V).
This output is for that application not pin-compatible to the IRIG-B input (24 V) of the
SIPROTEC 4 device (Port A). A T-adapter cable 7XV5104-3AA00 is required to
connect PIN 8/4 from X1 with PIN 1/3 of the IRIG-B input (Port A) of the protection
device. By use of the T-adapter together with the Y-bus cables 7XV5104-0AAxx a
further up to 6 SIPROTEC 4 devices can be connected to the electrical output and can
be synchronized with the time telegram from input R2.
Light idle state ´ON´ at the optical input R2 leads to a 24 V electrical signal at the
semiconductor output. The data transfer via R2 is indicated by the yellow „RCV 2"LED
at the front plate.
Synchronizing of maximum 12 SIPROTEC 4 devices via input R1
Should up to 12 SIPROTEC 4 devices be synchronized, each 6 devices must be
connected to the two electrical 24 V semiconductor outputs at X1 (PIN 1/3 for output1
and PIN8/4 for output 2). Between the two electrical buses for the time synchronization
signals and X1 the T-adapter cable 7XV5104-3AA00 is required. Each time
synchronization bus is built up by Y-cables 7XV5104-0AAxx. 6 devices can be
connected to each bus.
The optical time synchronization signal is received for that application only at R1. This
signal is optically to electrically converted and given parallel to both electrical outputs,
when at DIP-switch S1 switch 3 is at position ´ON´ (´OFF´ is the factory setting).
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