OVERVIEW

Official designation: Allen-Bradley 1746-NI16I (SLC 500, Analog Input Module)

The 1746-NI16I is a high-density, single-slot analog input module for the SLC 500 platform, providing 16 current input channels for industrial process control.

KEY SPECS SUMMARY

Power: 5V DC, 150 mA (backplane)

Interfaces / Ports: One 36-pin connector

Indicators: Module status LED

Operating Temp: 0 to 60 degrees C

Platform / Compatibility: SLC 500 modular hardware

Limit: 16 single-ended or 8 differential

Lifecycle: Discontinued

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What are the two primary current input ranges supported by the 16-channel analog module?

A: The module supports 0 to 20 mA and a bipolar range of +/- 20 mA current inputs.

Wiring & Installation:

Q: What is the primary difference between the single-ended and differential wiring options?

A: Single-ended uses a common return for all channels, while differential provides isolation per channel.

Troubleshooting & Compatibility:

Q: What is indicated if the single Module Status LED is flashing red?

A: A flashing red status LED indicates a configuration error or a detected module fault.

Replacement & Upgrades:

Q: What is the modern replacement series for high-density current input modules from the SLC 500 series?

A: Newer platforms such as CompactLogix or ControlLogix offer replacement analog input modules.