Siemens SIPROTEC 7UT613 series Manual page 376

3 Mounting and Commissioning
Fibre-optic Cables
RTD box
376
Table 3-22 D-subminiature connector assignment of the time synchronisation interface
Pin No.
1
2
3
4
5
6
7
8
9
1)
assigned, but not used
WARNING!
Laser rays!
Do not look directly into the fiber-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 represented by symbols.
The character idle state for the optical fibre interface is „Light off". If the character idle
state is to be changed, use the operating program DIGSI, as described in the
SIPROTEC 4 System Description.
If one or two RTD-boxes 7XV5662-xAD are connected for considering the coolant
temperature when using overload protection with hot-spot calculation, check their con-
nection at the service interface (Port C) or the auxiliary interface (Port D).
Also verify the termination. The terminating resistors must be connected to the device
(see margin heading „Termination").
For further information refer to the operating manual of 7XV5662-xAD. Check the
transmission settings at the temperature meter. Besides the baud rate and the parity,
the bus number is also important.
For connection of RTD-box(es) proceed as follows:
• For connection of 1 RTD-box 7XV5662-xAD:
Bus number = 0 with Simplex transmission (to be set at 7XV5662-xAD),
Bus number = 1 with Duplex transmission (to be set at 7XV5662-xAD).
• For connection of 2 RTD-boxes 7XV5662-xAD:
Bus number = 1 for the 1st RTD-box (to be set at 7XV5662-xAD for RTD 1 to 6),
Bus number = 2 for the 2nd RTD-box (to be set at 7XV5662-AD for RTD 7 to 12).
Designation
P24_TSIG
P5_TSIG
M_TSIG
1)
M_TYNC
SCREEN
–
P12_TSIG
1)
P_TSYNC
SCREEN
Signal significance
Input 24 V
Input 5 V
Return line
1)
Return line
Screen potential
–
Input 12 V
1)
Input 24 V
Screen potential
7UT613/63x Manual
C53000-G1176-C160-2