Siemens SIPROTEC 7SJ61 - Page 390

Appendix
A.3 Connection Examples
SIPROTEC, 7SJ61, Manual
C53000-G1140-C210-1, Release date 02.2008
390
Figure A-18 Half-duplex operation with two RTD-Boxes, above: optical design (2 FOs);
below: design with RS 485
1) for 7SJ64 port D
2) for 7SJ64 optionally port C or port D