ABB 615 Series - Page 1164

Group Jumper connection Description Notes
X9 1-2
2-3
A+ bias enabled
A+ bias disabled
1)
4-wire RX channel
X8 1-2
2-3
B- bias enabled
B- bias disabled
1)
X11 1-2
2-3
Bus termination enabled
Bus termination
disabled
1)
1) Default setting
COM2 port connection can be either EIA-485 or optical ST. Connection type is selected
by setting jumpers X27 and X28.
Table 964: COM2 serial connection X5 EIA-485/ X12 Optical ST
Group Jumper connection Description
X27 1-2
2-3
EIA-485
Optical ST
X28 1-2
2-3
EIA-485
Optical ST
Table 965: 2-wire EIA-485 jumper connectors for COM2
Group
Jumper connection Description
X13 1-2
2-3
A+ bias enabled
A+ bias disabled
X14 1-2
2-3
B- bias enabled
B- bias disabled
X15 1-2
2-3
Bus termination enabled
Bus termination disabled
Table 966: 4-wire EIA-485 jumper connectors for COM2
Group
Jumper connection Description Notes
X13 1-2
2-3
A+ bias enabled
A+ bias disabled
COM2
4-wire TX channel
X14 1-2
2-3
B- bias enabled
B- bias disabled
X15 1-2
2-3
Bus termination enabled
Bus termination disabled
X16 1-2
2-3
Bus termination enabled
Bus termination disabled
4-wire RX channel
X17 1-2
2-3
A+ bias enabled
A+ bias disabled
X18 1-2
2-3
B- bias enabled
B- bias disabled
Section 13 1MAC059074-MB A
Protection relay's physical connections
1158 615 series ANSI
Technical Manual