Allen-Bradley 1771 Specifications

Specifications

Form factorModular rack / chassis Enums
Max modules per chassis12 Numbers
Logic supply voltage5 V
Typical field input voltage24 V
Supported I/O typesDiscrete inputs; Discrete outputs; Analog inputs; Analog outputs; Thermocouple/RTD Enums
Analog signal ranges4-20 mA; 0-20 mA; ±10 V Enums
BackplaneProprietary parallel backplane Enums
MountingPanel-mount Enums
AddressingRack and slot addressing scheme Enums
The above specifications are based on the 1976 model year.

Allen-Bradley 1771 description

The Allen-Bradley 1771 is a legacy modular I/O system designed for industrial control and machine automation. Built for reliability in harsh environments, it offers broad I/O module variety and simple integration into older PLC installations, making it a common choice for maintenance, retrofit and spare-parts applications.

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