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3 Installation and Commissioning
3.2.7
Optical Fibers
3.2.8
Checking Power System Connections
114
Table 3-7
D-subminiature connector assignment of the time synchronization interface
Pin No.
1
2
3
4
5
6
7
8
P_TSYNC
9
1)
assigned, but not used
WARNING!
Warning of Laser rays!
Non–observance of the following measure can result in death, personal injury or sub-
stantial property damage.
Do not look directly into the fibre-optic elements!
Signals transmitted via optical fibers are unaffected by interference. The fibers guar-
antee electrical isolation between the connections. Transmit and receive connections
are shown with the symbols for transmit and for receive.
The normal setting of the character idle state for the fibre optic cable interface is "Light
off". If the character idle state is to be changed, use the operating program DIGSI
described in the SIPROTEC
Before the device is energized for the first time, the device should be in the final oper-
ating environment for at least 2 hours to equalize the temperature, to minimize humid-
ity and avoid condensation. Connections are checked with the device at its final loca-
tion. The plant must first be switched off and grounded.
Designation
P24_TSIG
P5_TSIG
M_TSIG
1)
–
Shield
–
P12_TSIG
1)
SHIELD
®
system description /1/.
Signal Meaning
Input 24 V
Input 5 V
Return Line
1)
–
Shield Potential
–
Input 12 V
1)
Input 24 V
Shield Potential
®
, as
6MD665 Manual
C53000-G1876-C103-3
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