ABB RELION Series - Section 14 Technical data; Dimensions; Power supply

1 2 3
1 2 3
X24
X3
X5
1 2 3
1 2 3
X6 X21
X7
X20
X9
X19
X11
X8
X16
X18
X27
X13
X26
3 2 1
X14
X15
X28
X17
3 2 1
GUID-1E542C3A-F6E9-4F94-BEFD-EA3FEEC65FC8 V1 EN
Figure 418: 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 720: 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
2-3
EIA-485
EIA-232
1MRS758755 A Section 13
Protection relay's physical connections
REC615 and RER615 775
Technical Manual