AB 1771-IB Digital Input Module Item NO.: 2815804

The Allen-Bradley 1771-IB is a reliable digital input module from the 1771 I/O series, designed for use 

in CompactLogix and PLC-5 systems. It converts DC signals provided by user devices to the logic level 

needed by the processor. It controls the state of corresponding bits in the PLC data table. It provides 

modular design with space-saving and pocket-friendly means to add input to a PLC control system. It 

comes with a 1771-WA wiring arm to replace the module, eliminating the need to disconnect the wiring.

The 1771-IB module has 8 red status indicators for field side indication at the front panel. It contains 

opto-electrical isolation to protect the system circuits from electrical transients. It also contains an input 

filtering feature to reduce electrical noise.

Manufacturer: AB

Product Numbers: 1771-IB

Product Type: Digital Input Module

Country of origin: USA

Condition: 100% Original

Warranty: 1 Year

General information:

Module Type: Digital DC Input Module

Number of Inputs: 8 Inputs

Voltage Category: 10-60 Volts DC, Sink (Source Load)

DC Operating Voltage: 10-27 Volts

Backplane Current: 74 Miliamperes

Max DC Off-State Current: 3.0 Miliamperes

Wiring Arm: 1771-WN

Typical AC Signal Delay (Off): 20 (+/- 15) ms

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