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Products Description
Allen‑Bradley 1771-IBD PLC‑5 16 Channel 24V DC Digital Input Module Unit
Feature & Principle
Discrete input module for PLC‑5 backplane rack. It receives 24V DC dry contact or sensor signals from field devices such as limit switches, proximity sensors and push buttons. Optocoupler isolation separates field circuit and control side to suppress interference. The module converts field status into backplane data for CPU logic execution.
SpecificationsModel: 1771-IBDBrand: Allen‑Bradley / RockwellSeries: PLC‑5Channel: 16 channelsInput Type: 24V DC sink/sourceIsolation: Optical isolationBackplane: PLC‑5 I/O chassisHot Swap: Supported
Certification: UL, CE
Components & Diagnostics
Optocoupler array, signal conditioning PCB, backplane bus interface, channel status LED and terminal block. Common faults: channel no response, LED abnormal, backplane communication failure, channel burnout caused by overvoltage.
Product Brief1771-IBD input module, Rockwell legacy PLC spare widely used for old production line, packaging equipment and water treatment discrete signal collection.
