1 2
3
1 2
3
X24
X3
X
5
1 2
3
1 2 3
X
6
X
21 X7 X2
0
X
9
X
19
X
11
X
8
X
16 X1
8
X
27
X
13
X
26
3 2
1
X
14
X
15
X
28
X
17
3 2
1
Figure 456: Jumper connections on communication module COM0023 revision G
COM1 port connection type can be either EIA-232 or EIA-485. The type is selected by
setting jumpers X19, X20, X21 and X26. The jumpers are set to EIA-232 by default.
Table 740: EIA-232 and EIA-485 jumper connectors for COM1
Group
Jumper connection
Description
X19
1-2
2-3
EIA-485
EIA-232
X20
1-2
2-3
EIA-485
EIA-232
X21
1-2
2-3
EIA-485
EIA-232
X26
1-2
EIA-485
1MRS758755 C
Protection relay's physical connections
REC615 & RER615
Technical Manual
845
Содержание Relion REC615
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