Overview
The Allen-Bradley 1746-IV16 is a discrete input module for SLC 500 PLC systems that provides 16 input points interfacing with field devices supplying 24V DC signals. This module has sixteen channels that accepts a nominal input voltage of 24VDC with operating voltage range of 10-30VDC, making it ideal for sensors, switches, and auxiliary contacts in general-purpose industrial automation.
Key Features
- 16 sourcing input channels for interfacing switches, auxiliary contacts, sensors and binary ON/OFF signal devices
- Removable terminal blocks eliminate the need to disconnect wires during module replacement
- Filter circuitry and optical coupling for signal noise reduction
- LED indicators show input status ratings for easy troubleshooting
- Single-slot chassis mounting maximizes available expansion slots
- Supports both expansion rack and remote I/O racks
Technical Specifications
The 1746-IV16 delivers consistent performance across standard industrial environments. Fast response times and low power consumption make it suitable for high-density control applications.
Typical Applications
- Discrete sensor and switch interface (proximity, limit, pressure sensors)
- Auxiliary contact monitoring in motor control circuits
- Binary signal monitoring in packaging and material handling systems
- General-purpose digital input in SLC 500 fixed and modular configurations
- Local or remote I/O rack installations
Compatibility & Replacements
The input module receives data converted to digital format and stores it in its data image table, allowing access to all fixed and modular SLC 500 processors using Ladder Programming Logic. Input values can be easily accessed by SLC 500 processors that use Ladder Logic programming. Direct replacement for existing 1746-IV16 installations; compatible with all SLC 500 chassis configurations. The 1746-IV32 (32-channel) and 1746-ITV16 (fast response) are available for applications requiring higher point density or faster response times.
