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1746-OA8

Allen-Bradley SLC 500 8-Point AC Output Module 1746-OA8

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  • Manufacturer: Allen-Bradley

  • Product No.: 1746-OA8

  • Product Type: AC Output Module

  • Product Origin: USA

  • Payment:T/T, Western Union

  • Weight: 350g

  • Shipping port: Xiamen

  • Warranty: 12 months

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Düşündiriş

Product Overview

The Allen-Bradley 1746-OA8 is an 8-point discrete AC output module engineered for the SLC 500 modular control system by Rockwell Automation. Designed for controlling AC-powered loads such as solenoids, motor starters, relays, and indicator lamps, this module operates across a nominal 120/240 V AC supply voltage with a broad operating range of 85 to 264 V AC (47–63 Hz).

Organized into two (2) individually isolated groups of four (4) output channels each, the 1746-OA8 delivers reliable signal isolation and surge protection for industrial automation systems. Weighing approximately 0.35 kg (0.77 lbs), it installs into any single slot of an SLC 500 chassis, drawing a low 185 mA at 5 V DC from the backplane power supply.

Core Technical Advantages

  • Dual Grouped Channel Architecture: Features 8 AC output channels divided into two isolated groups of 4 points, enabling independent voltage source control per bank.
  • High Current Output Performance: Provides up to 1.0 A per point at 30°C, offering higher power output per channel compared to high-density modules.
  • Robust Surge Capability: Supports inrush surge currents up to 10 A per point for 25 ms, allowing safe switching of heavy inductive loads.
  • Optical Noise Isolation & Status LEDs: Integrates optical coupling between backplane logic and field circuitry, complete with front-panel status LEDs for real-time channel diagnostics.

Technical Specifications

Parameter Specification Details
Brand / Manufacturer Allen-Bradley / Rockwell Automation
Catalog Part Number 1746-OA8
Product Series SLC 500 Modular I/O Series
Module Type Discrete AC Output Module
Number of Outputs 8 AC outputs (2 groups of 4 channels)
Nominal Output Voltage 120 / 240 V AC (47 to 63 Hz)
Operating Voltage Range 85 to 264 V AC
Continuous Current per Point 1.00 A @ 30°C (86°F) | 0.50 A @ 60°C (140°F)
Continuous Current per Module 8.0 A max @ 30°C (86°F) | 4.0 A max @ 60°C (140°F)
Surge Current per Point 10.0 A maximum for 25 ms
On-State Voltage Drop 1.5 V AC max @ 1.0 A load current
Signal Delay Times OFF-to-ON: 1 ms | ON-to-OFF: 11.0 ms
Backplane Current Consumption 185 mA @ 5 V DC
Slot Width & Mounting Single slot / SLC 500 Chassis Mount
Estimated Shipping Weight Approx. 0.35 kg (0.77 lbs)

Installation & Handling Guidelines

  • Chassis Power Isolation: Always turn off power to the SLC 500 rack prior to inserting or removing the 1746-OA8 module to avoid damaging backplane connections.
  • Thermal Considerations: Observe temperature derating rules, limiting individual point currents to 0.50 A if operating temperatures reach 60°C (140°F).
  • Wiring Isolation: Route AC output field wiring separately from low-voltage DC signals and sensor wiring to minimize noise coupling within control enclosures.

Technical FAQs

Q1: What is the continuous current rating per point for the Allen-Bradley 1746-OA8 module?
A1: It supports 1.0 A per point at 30°C, derating to 0.5 A per point at 60°C.

Q2: How much backplane current does the 1746-OA8 module consume?
A2: The module consumes 185 mA at 5 V DC from the chassis backplane power supply.

Q3: How are the output points grouped on the 1746-OA8 module?
A3: The 8 output channels are organized into two isolated groups of 4 channels each.

Product Resources

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🏷️ Tags: AC Output Module

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