Allen Bradley 1746-NI4 SLC 500 High-Resolution Analog Input Module

Product Overview

The Allen Bradley 1746-NI4 serves as a high-performance analog input interface for the SLC 500 controller platform. This module converts continuous analog signals from field devices—such as pressure transducers and flow meters—into digital values for the PLC processor. By utilizing Sigma-Delta conversion technology, the 1746-NI4 ensures precise data acquisition for demanding industrial environments. We provide this unit as 100% Brand New and original equipment to guarantee maximum uptime for your control system.

Technical Specifications

Engineering Advantages

• Superior Signal Integrity: The 16-bit Sigma-Delta converter filters out high-frequency noise, delivering stable and accurate readings even in electrically "noisy" factory environments.

• Versatile Hardware Configuration: The module supports both voltage and current signals simultaneously across different channels. This flexibility eliminates the need for multiple specialized modules, saving valuable rack space.

• Simplified Troubleshooting: On-board LED indicators provide immediate visual diagnostics. You can quickly identify "Power" status and "Module Faults" without connecting a programming terminal.

• Robust Isolation: The 710V DC backplane isolation protects your sensitive SLC 500 processor from field-side electrical surges and ground loops, preventing catastrophic system failure.

FAQs

• Does the 1746-NI4 require an external power supply?

  The module draws its operating power directly from the SLC 500 backplane (25 mA at 5V and 85 mA at 24V). However, ensure your chassis power supply has sufficient capacity to support these requirements alongside your other I/O modules.

• How do I switch between Voltage and Current modes?

  You must configure the internal DIP switches located on the circuit board before installation. Always ensure the module is powered down before adjusting these settings to prevent hardware damage.

• Can I use this module with an SLC 5/01 processor?

  Yes, the 1746-NI4 maintains compatibility with all SLC 500 processors (5/01 through 5/05) as long as the chassis and power supply meet the electrical specifications.

• Is this unit a refurbished or used component?

  No. We supply this 1746-NI4 as a 100% Brand New, original Allen Bradley product in its factory packaging to ensure it meets all original manufacturer performance standards.