Allen-Bradley 1746-IG16 SLC 500 16-Point 5V TTL Input Module

The Allen-Bradley 1746-IG16 is a dedicated 16-point 5V TTL input module engineered for use within the SLC 500 automation platform. Designed for low-voltage digital signaling, it supports both TTL and BCD inputs, making it an effective choice for interfacing with electronic devices that operate at logic-level voltages.

Why It Helps

This module offers fast, dependable input processing with optical isolation to protect the PLC backplane from field-side electrical noise. LED indicators for every channel simplify troubleshooting, while the removable terminal block allows quick installation and replacement without rewiring.

Key Highlights

• Provides sixteen discrete 5V TTL input channels for compact digital signal handling, with inverted logic operation for TTL input compatibility.

• Optical isolation enhances noise immunity and protects the controller from electrical transients during field operations.

• Fast ON/OFF response times support applications requiring quick signal transitions in electronic systems.

• Front-panel LED indicators give real-time input status visibility, aiding maintenance and commissioning.

• Uses the 1746-RT25B removable terminal block, enabling simplified module swap-out and wiring management.

System Compatibility

Works with Allen-Bradley SLC 500 racks and processors, using a single chassis slot and standard SLC 500 wiring hardware.

Applications

Suitable for TTL or BCD signal interfacing, panel electronics, low-voltage digital equipment, industrial automation, and any control system requiring rapid, isolated input monitoring. Its solid design ensures reliable operation in long-term industrial use.