Allen-Bradley Block I/O module 1791-IOBB

The 1791-IOBB module is an Allen-Bradley Block I/O module. The module features 10 sinking inputs with 6 sourcing outputs. The 1791-IOBB module is a small and compact remote I/O device that comes complete with a power supply, and it has a programmable controller interface. The module features signal conditioning circuitry and it is compatible with the PLC-2, PLC-3, and the PLC-5 family programmable controllers, and the SLC 500 modular controllers by Allen-Bradley. The 1791-IOBB module features a removable remote I/O connector and an input/output connector. The removable parts aid in ensuring an easy wiring experience. The unit also features the switch assemblies. It has a built-in DIP switch for setting the I/O rack number, the starting I/O group, the unit transmission rate, the last state, and the DH-485 terminator.

Technical specifications for 1791-IOBB

BrandAllen-Bradley / Rockwell Automation

Series1791 Block I/O

Part Number1791-IOBB

Input voltage20.5 to 27.6V DC

Operating Temperature0 to 55 degrees Celsius

Storage Temperature-40 to 85 degrees Celsius

Relative Humidity5% to 95% None Condensing

Power Dissipation12.39 Watts (maximum); 8.73 Watts (typical)

Thermal Dissipation42.4 BTU/hr (maximum); 29.8 BTU/hr (typical)

Number of outputs6

Outputs TypeSource

Rated output voltage10 to 30V DC

Product Lifecycle Status*Discontinued/Obsolete