Overview
The Allen-Bradley 1746-IV8 is a high-performance discrete DC input module engineered for the SLC 500 programmable controller series. This module provides eight (8) current-sourcing input channels, designed to interface seamlessly with sinking (NPN) field devices such as proximity sensors, limit switches, and pushbuttons. The module serves as a critical component in distributed control architectures where field device signals must reach the PLC processor reliably.
Key Features
- Eight (8) independent current-sourcing input channels
- Nominal operating voltage of 24V DC, compatible with a wide 10-30V DC range
- Single-slot installation in SLC 500 chassis
- Fast, reliable discrete signal acquisition from industrial field devices
- Backplane current draw rated for Class 1 and Class 3 SLC configurations
Technical Specifications
- Input Voltage: 10-30 Vdc
- Number of Input Channels: 8
- Sourcing Logic: DC Current-Sourcing (PNP)
- Nominal Voltage: 24V DC
- Backplane Connector: Standard SLC 500 I/O module slot
- Series: SLC 500
- Mounting: Single-slot chassis module
Typical Applications
The 1746-IV8 is widely utilized in factory automation, process control, and machine monitoring systems. It is ideal for applications requiring the integration of multiple DC-powered field devices into a centralized control architecture, including conveyor control, assembly line monitoring, and safety-interlocked machine operation.
Compatibility & Replacements
Compatible With
- SLC 500 modular and fixed chassis
- SLC 500 programmable controller family
- Rockwell Automation control systems using discrete I/O
- Systems requiring NPN/sinking field device interfaces
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. Other discrete input modules in the 1746 series (such as 1746-IV16, 1746-IB16) may be alternatives depending on your channel count and logic requirements.
Works With
- SLC 500 Series processors
- Rockwell Automation Studio 5000 programming environment
- Allen-Bradley Industrial Automation platforms
- Proximity sensors, pushbuttons, limit switches, and sinking field devices
