ABB RED615 Technical Manual

Also see for RED615 ANSI: Product guide Applications manual Applications manual Point List Manual Operation manual

Contents

ABB RED615 Technical Manual Manual pdf 862 page image

Table 670:2-wire EIA-485 jumper connectorsGroup Jumper connection Description NotesX4 1-2 A+ bias enabled COM22-wire connection2-3 A+ bias disabledX5 1-2 B- bias enabled2-3 B- bias disabledX6 1-2 Bus terminationenabled2-3 Bus terminationdisabledX7 1-2 B- bias enabled COM12-wire connection2-3 B- bias disabledX8 1-2 A+ bias enabled2-3 A+ bias disabledX9 1-2 Bus terminationenabled2-3 Bus terminationdisabledThe bus is to be biased at one end to ensure fail-safe operation, which can be doneusing the pull-up and pull-down resistors on the communication module. In 4-wireconnection the pull-up and pull-down resistors are selected by setting jumpers X4,X5, X7 and X8 to enabled position. The bus termination is selected by settingjumpers X6 and X9 to enabled position.The jumpers have been set to no termination and no biasing as default.Table 671:4-wire EIA-485 jumper connectors for COM2Group Jumper connection Description NotesX41-2 A+ bias enabledCOM24-wire TX channel2-3 A+ bias disabled 1)X51-2 B- bias enabled2-3 B- bias disabled1)X61-2 Bus terminationenabled2-3 Bus terminationdisabled1)Table continues on next pageSection 13 1YHT530004D05 DIED physical connections856 615 seriesTechnical Manual