Allen-Bradley 1746-IA16 16-Point 120V AC Input Module, Series B

The Allen-Bradley 1746-IA16 Series B is a 16-point 120V AC digital input module designed for dependable signal processing within the SLC 500 control platform. It provides stable, real-time input monitoring for industrial automation applications while offering diagnostic visibility and simplified wiring through its removable terminal block.

Why It Helps

This module ensures accurate input detection for PLC scan cycles, allowing the controller to respond reliably to field devices. Its optical isolation and input filtering enhance noise immunity, while LED indicators streamline troubleshooting and maintenance in demanding environments.

Key Highlights

• Sixteen discrete AC inputs support a wide range of industrial signaling devices, providing flexible integration into SLC 500 systems.

• Built-in optical isolation and filtering help protect the controller and improve reliability in high-noise installations.

• Removable terminal block allows module replacement without rewiring, reducing maintenance downtime.

• Compatible with fixed and modular SLC 500 racks, enabling use in both local and expansion configurations.

• Designed for standard 120V AC control circuits with defined input thresholds for dependable logic-state detection.

System Compatibility

Fully compatible with all Allen-Bradley SLC 500 chassis and supports AC field devices rated 85–132V AC. Recommended modern alternative for new applications is the 1769-IA16.

Applications

Ideal for manufacturing, machinery control, and facility automation requiring multiple AC input points. Its rugged design and proven reliability make it suitable for long-term use in industrial control systems.