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Allen-Bradley 1746-IO8 SLC 500 Combination Input/Output Module

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Allen-Bradley 1746-IO8

by Allen-Bradley

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OverviewThe Allen-Bradley 1746-IO8 is a dependable combination input/output module engineered for seamless integration with SLC 500 programmable logic controllers (PLCs). This versatile unit provides a compact yet powerful solution for both monitoring inputs and controlling outputs within a single device. It effectively streamlines industrial processes and reduces wiring complexity, making it an ideal choice for applications demanding reliable data acquisition and precise actuation. Designed to withstand demanding industrial settings, the 1746-IO8 enhances a PLC system's capabilities by offering flexible and consistent control over various industrial operations. Its blend of AC inputs and relay outputs presents a cost-effective and space-saving alternative to separate input and output modules, simplifying system design and maintenance.Key Features Integrated 8-Channel I/O: Combines 4 digital AC inputs and 4 reliable relay outputs in one compact module, optimizing control panel space. 120V AC Digital Inputs: Delivers precise monitoring with 4 points per common, supporting an operating voltage range of 85-132V AC for robust signal detection. Versatile Relay Outputs: Equipped with 4 normally open (NO) relay contacts, capable of handling a broad spectrum of loads from 5-265V AC or 5-125V DC. High Continuous Output Current: Boasts an 8A continuous output current rating, suitable for powering a diverse range of industrial devices and loads. Seamless SLC 500 Compatibility: Guarantees effortless integration and superior performance within existing Allen-Bradley SLC 500 PLC systems. Durable & Space-Saving Design: Features a compact, panel-mountable form factor, built for durability and engineered to conserve valuable control cabinet space. Enhanced System Reliability: Provides stable and consistent performance for critical automation tasks, contributing to overall operational efficiency. Technical Specifications Model: 1746-IO8 Platform: SLC 500 Number of Inputs: 4 (Digital AC, 120V) Input Operating Voltage: 85-132V AC Number of Outputs: 4 (Relay, Normally Open Contacts) Output Operating Voltage: 5-265V AC or 5-125V DC Continuous Output Current Rating: 8A Mounting: SLC 500 I/O Chassis Applications Factory Automation & Process Control: Essential for precise monitoring and control of machinery, assembly lines, and various manufacturing processes, ensuring operational continuity and efficiency. Material Handling & Packaging Systems: Provides reliable switching capabilities for conveyors, robotic pick-and-place systems, sorting equipment, and other automated packaging machinery, optimizing throughput. SCADA & Distributed I/O Systems: Facilitates remote data acquisition and control in supervisory control and data acquisition (SCADA) networks, enhancing centralized monitoring and management of geographically dispersed assets. Building & Energy Management Systems: Utilized for intelligent control of lighting systems, HVAC units, motor starters, and other building infrastructure, contributing to energy efficiency and operational comfort. Water Treatment & Municipal Utilities: Deploys robust control over pumps, valves, and monitoring equipment in water purification plants and municipal utility networks for safe and efficient operation. Automotive Manufacturing: Integral for controlling various stages of vehicle assembly, including robotic welding, painting, and quality control processes. Why Choose This Model?This module offers optimized space utilization and simplified wiring due to its integrated AC inputs and relay outputs, reducing the need for multiple discrete components and streamlining panel layouts.Order NowContact Palm Parts Solution today for pricing and availability of the Allen-Bradley 1746-IO8 module.FAQWhat is the primary function of the Allen-Bradley 1746-IO8?The 1746-IO8 is a combination input/output module designed for SLC 500 PLCs, offering both digital AC inputs and relay outputs in a single unit for industrial automation tasks.How many inputs and outputs does the 1746-IO8 have?This module features 4 digital AC inputs and 4 normally open (NO) relay outputs.Is this module compatible with all Allen-Bradley PLCs?The 1746-IO8 is specifically designed for seamless compatibility and optimal performance within Allen-Bradley SLC 500 PLC systems.

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PRODUCT DETAILS

Allen-Bradley 1746-IO8

Overview

This is a genuine Allen-Bradley component from the SLC 500 Platform (Legacy) family. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.

Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.

Key Features

  • Genuine Allen-Bradley catalog part
  • Tested before shipment
  • Backed by PalmPartsSolution warranty
  • Cross-reference and revision assistance available
  • Compatible with the broader Allen-Bradley automation ecosystem
  • Engineered to integrate inside SLC 500 Platform (Legacy) installations

Compatibility

When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Allen-Bradley equipment. Where applicable, confirm:

  • Input/output voltage and current rating
  • Communication protocol and network role
  • Mounting form factor and footprint
  • Operating temperature, humidity, and IP rating
  • Required certifications (UL, CE, ATEX, marine, etc.)

Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.

Replacement Information

Three ways to source this part through PalmPartsSolution:

  1. Exact replacement — same Allen-Bradley catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. Engineered migration — current-generation Allen-Bradley platform with documented conversion notes for the SLC 500 Platform (Legacy) family

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

  • Model: 1746-IO8
  • Platform: SLC 500
  • Number of Inputs: 4 (Digital AC, 120V)
  • Input Operating Voltage: 85-132V AC
  • Number of Outputs: 4 (Relay, Normally Open Contacts)
  • Output Operating Voltage: 5-265V AC or 5-125V DC
  • Continuous Output Current Rating: 8A
  • Mounting: SLC 500 I/O Chassis

Applications

  • Factory Automation & Process Control: Essential for precise monitoring and control of machinery, assembly lines, and various manufacturing processes, ensuring operational continuity and efficiency.
  • Material Handling & Packaging Systems: Provides reliable switching capabilities for conveyors, robotic pick-and-place systems, sorting equipment, and other automated packaging machinery, optimizing throughput.
  • SCADA & Distributed I/O Systems: Facilitates remote data acquisition and control in supervisory control and data acquisition (SCADA) networks, enhancing centralized monitoring and management of geographically dispersed assets.
  • Building & Energy Management Systems: Utilized for intelligent control of lighting systems, HVAC units, motor starters, and other building infrastructure, contributing to energy efficiency and operational comfort.
  • Water Treatment & Municipal Utilities: Deploys robust control over pumps, valves, and monitoring equipment in water purification plants and municipal utility networks for safe and efficient operation.
  • Automotive Manufacturing: Integral for controlling various stages of vehicle assembly, including robotic welding, painting, and quality control processes.

Why Choose the 1746-IO8?

This module offers optimized space utilization and simplified wiring due to its integrated AC inputs and relay outputs, reducing the need for multiple discrete components and streamlining panel layouts.

Availability & Shipping

  • In stock: 1746-IO8 ready for immediate dispatch from our Florida warehouse.
  • Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
  • Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
  • Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
  • Buy with confidence: Every 1746-IO8 ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Allen-Bradley

The 1746-IO8 is a combination input/output module designed for SLC 500 PLCs, offering both digital AC inputs and relay outputs in a single unit for industrial automation tasks.

Machine down? We ship parts the same day.

New, surplus, and refurbished Allen-Bradley inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.

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Independent Supplier Notice

PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.

Product Condition & Firmware

All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.

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