ABB RER620

Section 12 1MAC309294-MB F
Relay physical connections
558 RER620
Technical Manual
Table 432: Configuration options of the two independent communication ports
Figure 315: Jumper connections on communication module COMB022/023A
COM1 port connection type can be either EIA-232 or EIA-485. Type is selected by setting
jumpers X19, X20, X21, X26.
The jumpers are set to EIA-232 by default.
COM1 connector X6 COM2 connector X5 or X12
EIA-232 Optical ST (X12)
EIA-485 2-wire EIA-485 2-wire (X5)
EIA-485 4-wire EIA-485 4-wire (X5)
6
X26
X
8
X11 X
1
9
X9
X5
X7
X
2
1
X6
X
2
0
1
2
3
1 2
3
X
1
7
X1
8
X16
X15
X14
X13
1 2 3
X24
1 2 3
X3
X25
1
2
3
5
4
3
2 1
X
27
X28
3 2 1