ABB Relion REC615 - Page 849

Pin 2-wire mode 4-wire mode
5 AGND (isolated ground)
4 IRIG-B +
3 IRIG-B -
2 -
1 GND (case)
13.4.7.2 COM0032 jumper locations and connections
The optional communication modules include support for optical ST serial
communication (X9 connector). The fibre-optic ST connection uses the COM1 port.
X15 X24
3
2
1
3
2
1
Figure 457: Jumper connections on communication module COM0032
1MRS758755 C
Protection relay's physical connections
REC615 & RER615
Technical Manual
849