Allen-Bradley 1771-IBD 10-30 VDC DC Input Module PLC-5 1771 I/O

Allen-Bradley 1771-IBD 10-30 VDC DC Input Module PLC-5 1771 I/O

The Allen-Bradley 1771-IBD is a discrete DC input module for the Allen-Bradley 1771 I/O system. It accepts field-side input signals in the 10–30 VDC range and communicates that signal state to the PLC processor over the 1771 backplane, drawing 0.25 amps at 5 VDC from the chassis. The module is made in the USA and carries UL listing when used with a listed system.

Specifications & What's Included

• Catalog Number: 1771-IBD
• Type: Discrete DC Input Module
• Input Voltage Range: 10 to 30 VDC
• Backplane Power Requirement: 0.25 Amps at 5 VDC
• Compatible Chassis: Allen-Bradley 1771 I/O backplane
• Compatible Controller: Allen-Bradley PLC-5 series
• Country of Manufacture: United States
• Certifications: UL Listed (when used with a listed system)
• Form Factor: 1771-series I/O card/module
• Wiring: Front-mounted screw terminal strip (field wiring side)
• Backplane Connector: Gold edge connector for 1771 I/O chassis
• Module only — no cables or accessories included

Applications

The Allen-Bradley 1771 I/O system is the modular I/O platform for the Allen-Bradley PLC-5 programmable logic controller family, one of the most widely deployed PLCs in North American industrial automation from the 1980s through the 2000s. Discrete DC input modules like the 1771-IBD are used to bring digital on/off signals from field devices — sensors, limit switches, pushbuttons, proximity switches, and similar 24 VDC field instruments — into the PLC processor for logic execution. The 1771 platform was used extensively in automotive assembly, food and beverage processing, oil and gas, material handling, and general manufacturing. Although the PLC-5 is a mature platform that Rockwell Automation has transitioned to legacy support status, a large installed base of PLC-5 systems remains in service, making spare and replacement 1771 I/O modules like this one in steady demand for maintenance and repair.