The Allen-Bradley 1746-INT4 is an isolated analog input module designed for the SLC 500 programmable logic controller system. This module provides high-precision signal conditioning for thermocouple and millivolt inputs, ensuring reliable data acquisition in industrial environments where electrical isolation is required to minimize noise and ground loop interference.
Features
Supports direct connection of various thermocouple types and millivolt signals.
Provides isolated analog inputs to protect sensitive controller circuitry from common-mode noise.
Compatible with SLC 500 chassis-based I/O configurations.
Designed for robust performance in demanding industrial automation applications.
Technical Specifications
Manufacturer
Allen-Bradley
Model Number
1746-INT4
Module Type
Isolated Thermocouple / Millivolt Analog Input
Input Ranges
-50 to 50 mVDC, -100 to 100 mVDC
Current Consumption
110 mA @ 5 VDC / 85 mA @ 24 VDC
System Compatibility
SLC 500
Weight
0.4 kg
Installation Guidelines
Ensure the SLC 500 system power is disconnected before installing or removing the module from the chassis.
Use shielded twisted-pair cabling for all thermocouple and millivolt inputs to minimize electromagnetic interference.
Maintain proper grounding practices for the chassis and signal shields to ensure accurate measurement performance.
Verify that the module is fully seated in the backplane connector before securing it with the chassis retaining screws.
Avoid routing signal cables in close proximity to high-voltage power lines or heavy motor control wiring.
FAQ
Is the 1746-INT4 still in production? No, this module has been discontinued by the manufacturer. We provide high-quality surplus units suitable for legacy system maintenance and replacement.
What are the compatible spare models for the 1746-INT4? The 1746-INT4 is often interchangeable with revision versions such as 1746-INT4/B and 1746-INT4/C, depending on your specific system requirements.
