Rockwell Automation 1788-FBJB6 Foundation Fieldbus Junction Box Installation Instructions - Manual (Page 13)

FOUNDATION Fieldbus Junction Box 13
Rockwell Automation Publication 1788-IN006A-EN-P - September 2014
Trunk Trip (1788-FBJB4R only)
If a trunk goes into over-current state, it will trip the specific trunk while keeping
the rest of the redundant bus active. The trip will remove the supply from the
over-current trunk and set the trunk LED to red. The fault latch does not
unlatch when the fault has been removed. You must reset the trunk trip by either
pressing the Reset button or setting DIP switches 3 and 4 to enable an auto-reset.
Specifications
Specifications - FOUNDATION Fieldbus Junction Boxes
Specification Value
1788-FBJB4R 1788-FBJB6
Input Voltage 12…32V DC, 0.5 A, Class 2/SELV
Trunk Output Voltage 12…32V DC, 0.36 A,
resistive only 12…32V DC, 0.48A, Resistive
Only
Drop Output Voltage 12…32V DC, 40 mA, resistive only
Power Consumption 40 mA at 24V max
Drop Current 40 mA
Trunk Current 360 mA 480 mA
Trunk Trip Current 490 mA N/A
Isolation Voltage no isolation between communication channels
Temperature, Operating IEC 60068-2-1 (Test Ad, Operating Cold),
IEC 60068-2-2 (Test Bd, Operating Dry Heat),
IEC 60068-2-14 (Test Nb, Operating Thermal Shock):
0…60 ˚C (32…140 ˚F)
Temperature, Surrounding Air, Max 60 ˚C (140 ˚F)
Temperature, Nonoperating IEC 60068-2-1 (Test Ab, Unpackaged Nonoperating Cold),
IEC 60068-2-2 (Test Bb, Unpackaged Nonoperating Dry Heat),
IEC 60068-2-14 (Test Na, Unpackaged Nonoperating Thermal Shock):
0…60 ˚C (32…140 ˚F)
North American Temperature Code T4