Allen-Bradley 1746-NI8 SLC 500 Analog Input Module 1746NI8

Description:

The Allen-Bradley 1746-NI8 is an 8-channel analog input module used in SLC 500 programmable controller systems for monitoring voltage and current field signals. It provides high-resolution analog signal acquisition for integration of transmitters, sensors, and process instruments into PLC-based control platforms. Commonly installed in manufacturing lines, process control systems, water treatment facilities, and industrial machinery, this module enables accurate measurement of process variables. Maintenance teams and system integrators use this module for system expansion, replacement of failed analog cards, retrofit projects, and maintaining legacy SLC 500 automation systems.

Applications:

The 1746-NI8 analog input module is used to interface analog field devices such as pressure transmitters, flow meters, temperature sensors, and level instruments with SLC 500 controllers. It is widely applied in chemical processing, food and beverage production, water and wastewater treatment plants, and general industrial automation systems where continuous monitoring and precise analog signal processing are required.

Technical Specifications:

• Manufacturer Part Number (MPN): 1746-NI8
• Brand: Allen-Bradley
• Product Type: Analog Input Module
• Controller Platform: SLC 500
• Number of Inputs: 8 single-ended channels
• Input Signal Types: Voltage and Current
• Voltage Ranges: ±10V, 0–10V, 1–5V
• Current Ranges: 0–20 mA, 4–20 mA
• Resolution: 16-bit
• Backplane Current Draw: 0.085 A at 5V DC (approx.)
• Mounting: Chassis-based (SLC 500 rack)
• Operating Temperature: 0 to 60°C (32 to 140°F)

Common Replacements:

• Allen-Bradley 1746-NI4
• Allen-Bradley 1746-NIO4V
• Allen-Bradley 1769-IF8