Allen Bradley 1771-ASB/E Remote I/O Adapter Module

Overview

The Allen Bradley 1771-ASB/E is a Remote I/O adapter module designed for PLC-5 and 1771 series systems. It provides communication between a PLC processor and remote I/O chassis, enabling distributed control and expanded system architecture across industrial automation networks. It is commonly used in large-scale legacy control systems requiring reliable remote I/O integration.

General Information

Part Number: 1771-ASB/E

Manufacturer: Allen-Bradley (Rockwell Automation)

Brand: Allen-Bradley

Country of Origin: USA

Series: 1771 I/O System / PLC-5

Product Type: Remote I/O Adapter Module

Mounting Type: Installed within 1771 I/O chassis

Function: Provides communication interface between PLC processor and remote I/O racks

Design: Industrial-grade remote communication adapter module

Power Specifications

Input Power: Supplied via 1771 backplane

Operating Voltage: System-dependent PLC-5 architecture

Power Consumption: Low-power electronic module

Protection: Electrical isolation and industrial noise immunity

Start-Up: Automatic synchronization with PLC system on initialization

Communication & Interface

Interface Type: Remote I/O communication network (RIO)

System Role: Adapter for distributed I/O network communication

Data Transfer: Cyclic high-speed data exchange between PLC and remote racks

Diagnostics: LED indicators for module status, network health, and faults

System Integration: Compatible with PLC-5 remote I/O architecture

Environmental

Operating Temperature: 0 to 60 °C

Storage Temperature: -40 to 85 °C

Humidity: 5% to 95% non-condensing

Vibration Resistance: Industrial cabinet installation standard

Protection Rating: IP20 when installed in enclosure

Installation Environment: Industrial control cabinet required

Dimensions & Weight

Dimensions (H × W × D): 165 × 51 × 89 mm

Weight: 0.7 kg

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