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Other Available Revisions for the 1788-FBJB4R 1788-FBJB4R/A

Common misspellings:
  • l788-FBJB4R
  • 17b8-FBJB4R
  • 178b-FBJB4R
  • 1788-F8JB4R
  • 1788-FBJ84R
  • 1788-FBJBAR
  • 1788FBJB4R

Technical Specifications for 1788-FBJB4R

BrandAllen-Bradley / Rockwell Automation
Series1788 linking devices
Part Number1788-FBJB4R
DescriptionFoundation Fieldbus Redundant Junction Box
Operating Voltage24 Volts DC
Current Rating950 milliamps
Power SourceClass 2/SELV Power Source
ConfigurationDIP Switches
ApplicationLogix 5000
Input/Output PortDual Trunk Input and Output Port
Average Weight0.1 Kilograms
EnclosureOpen Type

The Allen-Bradley 1788-FBJB4R Foundation Fieldbus Redundant Junction Box is a Fieldbus junction box from the Logix 5000 control system family. This Fieldbus junction box provides a simplified and fault-tolerant method of wiring Fieldbus networks. The 1788-FBJB4R Junction Box is designed to connect up to 4 devices to the Fieldbus network, and it comes with a dual trunk input and output port for configuring the Foundation Fieldbus configurations. The 1788-FBJB4R Junction Box constantly monitors each of its drop-line port bus current lines for a fault condition, and if a fault is detected in any of the field device’s ports, the current to the faulted port is limited only to safe current. Even when there is a faulted port, all of the other connected field devices on the bus will continue to communicate.

The Allen-Bradley 1788-FBJB4R Foundation Fieldbus Redundant Junction Box is configured with front-panel DIP switches which allow the operators to enable or disable the built-in bus terminator and to configure a timed auto-reset function and an auto-balance control in a ring topology. Also on the front panel of this module are status and diagnostic LED indicators and a reset button for resetting all trip indications on either the device or trunk ports. The 1788-FBJB4R Junction Box requires an external Class 2 DC power supply for operation. This power source provides 950 milliamps backplane current in the 18 to 32 Volts DC supply voltage range, and it has a maximum current rating of 0.4 Amps at 24 Volts DC. The 1788-FBJB4R Junction Box comes in an open-style design, and it has an operating temperature range of 0 to 60 degrees Celsius.

The Allen-Bradley 1788-FBJB4R Foundation Fieldbus Redundant Junction Box is a Fieldbus junction box from the Logix 5000 control system family. This module has an 18 to 32 Volts DC voltage requirement, 950 milliamps of maximum current draw at 5.0 Volts DC, and an open type of enclosure.

F.A.Q for 1788-FBJB4R

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