Allen Bradley 1746-OA16 SLC 500 AC Digital Input Module

Overview

The 1746-OA16 is an AC digital input module for the SLC 500 programmable logic controller (PLC) series. It converts AC field signals into discrete logic inputs for the controller, providing reliable detection and fast response for industrial automation applications.

General Information

Part Number: 1746-OA16

Manufacturer: Allen Bradley / USA

Series: SLC 500

Module Type: AC Digital Input Module

Mounting: DIN rail or chassis slot installation within SLC 500 system

Technology: 16-channel AC input with opto-isolation and LED diagnostics

Power Specifications

Supply Voltage: AC field voltage (typically 120/240 V AC)

Power Consumption: 3 W typical

Input Protection: Overvoltage and surge protection per channel

Indicators: Individual channel LEDs and module status LED

Communication & Interface

Backplane Communication: SLC 500 bus interface for seamless controller integration

I/O Channels: 16 AC digital inputs

Input Type: AC voltage signals, opto-isolated

Diagnostics: LED monitoring for input activity and module health

Operator Interface: Visual feedback for channel status and faults

Reset Features: Supports controller-initiated reset

Environmental

Operating Temperature: 0 to 60 °C

Storage Temperature: −20 to +85 °C

Humidity: 5% to 95% RH, non-condensing

Vibration Resistance: Meets industrial standard requirements

Protection Rating: IP20, suitable for enclosed industrial cabinets

Dimensions & Weight

Dimensions (L × W × H): 144.5 × 34.6 × 130.18 mm

Weight: 0.272 kg

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