Section 12
1MAC050144-MB C
IED physical connections
686
615 series ANSI
Technical Manual
Table 554: EIA-232 and EIA-485 jumper connectors for COM1
To ensure fail-safe operation, the bus is to be biased at one end using the pull-up and
pull-down resistors on the communication module. In the 4-wire connection, the pull-up
and pull-down resistors are selected by setting jumpers X5, X6, X8, X9 to enabled
position. The bus termination is selected by setting jumpers X7, X11 to enabled position.
The jumpers have been set to no termination and no biasing as default.
Table 555: 2-wire EIA-485 jumper connectors for COM1
Table 556: 4–wire EIA-485 jumper connectors for COM1
COM2 port connection can be either EIA-485 or optical ST. Connection type is selected
by setting jumpers X27 and X28.
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
Group
Jumper connection
Description
Notes
X5
1-2
2-3
A+ bias enabled
A+ bias disabled
1
1. Default setting
COM1
Rear connector X6
2-wire connection
X6
1-2
2-3
B- bias enabled
B- bias disabled
X7
1-2
2-3
Bus termination
enabled
Bus termination
disabled
Group
Jumper connection
Description
Notes
X5
1-2
2-3
A+ bias enabled
A+ bias disabled
1
1. Default setting
COM1
Rear connector X6
4-wire TX channel
X6
1-2
2-3
B- bias enabled
B- bias disabled
X7
1-2
2-3
Bus termination enabled
Bus termination disabled
X9
1-2
2-3
A+ bias enabled
A+ bias disabled
4-wire RX channel
X8
1-2
2-3
B- bias enabled
B- bias disabled
X11
1-2
2-3
Bus termination enabled
Bus termination disabled
Содержание 615 Series ANSI
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Страница 389: ...Section 4 1MAC050144 MB C Protection functions 382 615 series ANSI Technical Manual ...
Страница 485: ...Section 6 1MAC050144 MB C Supervision functions 478 615 series ANSI Technical Manual ...
Страница 635: ...Section 10 1MAC050144 MB C Other functions 628 615 series ANSI Technical Manual ...
Страница 707: ...Section 15 1MAC050144 MB C Applicable standards and regulations 700 615 series ANSI Technical Manual ...
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