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Table 728:
EIA-485 connections for COM0022 and COM0023 (X6)
Pin
2-wire mode
4-wire mode
1
-
Rx/+
6
-
Rx/-
7
B/-
Tx/-
8
A/+
Tx/+
Table 729:
EIA-485 connections for COM0023 (X5)
Pin
2-wire mode
4-wire mode
9
-
Rx/+
8
-
Rx/-
7
A/+
Tx/+
6
B/-
Tx/-
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.
Section 13
1MRS758755 A
Protection relay's physical connections
778
REC615 and RER615
Technical Manual
Summary of Contents for RELION Series
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