Allen-Bradley 1746-IN16 24V AC/DC Digital Input Module

Description

The Allen-Bradley 1746-IN16 is a 16-point digital input module designed for use with the SLC 500 programmable logic controller (PLC) system. This module provides 16 discrete inputs, allowing the SLC 500 processor to monitor the status of field devices operating at 24V AC/DC. It serves as a reliable interface between industrial sensors, switches, and the control system, facilitating high-speed data acquisition in automated environments.

Features

• 16-point digital input configuration.
• Compatible with 24V AC/DC signal levels.
• Designed specifically for integration with the Allen-Bradley SLC 500 platform.
• Compact modular design for efficient rack mounting.
• Status indicators for real-time monitoring of each input channel.

Applications

This module is widely used in industrial automation applications requiring the monitoring of discrete signals, such as limit switches, pushbuttons, proximity sensors, and relay contacts. It is suitable for manufacturing, material handling, and process control systems that utilize the SLC 500 architecture.

Technical Specifications

Installation Guidelines

• Ensure the SLC 500 chassis power is disconnected before installing or removing the module to prevent electrical damage.
• Slide the module into the designated slot in the SLC 500 chassis, ensuring the backplane connector is properly seated.
• Secure the module using the top and bottom retaining screws to ensure a stable connection and proper grounding.
• Use appropriate shielded cabling for input signals to minimize electromagnetic interference (EMI) in high-noise environments.
• Verify that the input voltage levels do not exceed the specified 24V AC/DC rating to prevent hardware failure.
• Maintain adequate ventilation around the chassis to prevent overheating during continuous operation.

FAQ

Is the 1746-IN16 still being manufactured?

No, the 1746-IN16 was officially discontinued by Allen-Bradley on August 31, 2018. It is now typically sourced through secondary market channels or as refurbished equipment.

Can this module be used with other PLC systems?

The 1746-IN16 is specifically engineered for the Allen-Bradley SLC 500 series backplane and is not compatible with other PLC families like ControlLogix or CompactLogix.