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

Description:

The Allen-Bradley 1746-NI8 SLC 500 PLC Analog Input Module is an analog input module used in industrial control systems to expand the analog sensing capabilities of SLC 500 automation platforms. Designed to provide multiple analog channels, this module enables accurate acquisition and processing of voltage and current signals from field devices such as sensors and transducers. Maintenance teams, OEM machine builders, and system integrators use this module for system upgrades, capacity expansion, and replacement of existing analog input modules in factory control architectures.

Applications:

The 1746-NI8 analog input module is commonly applied in industrial automation applications requiring real-time measurement of analog process variables. Typical installations include HVAC control systems, water and wastewater treatment plants, batching and dosing systems, packaging machinery, and production lines requiring precise analog data acquisition from temperature, pressure, and flow sensors. Its compatibility with SLC 500 PLC systems makes it suitable for both standalone machine control panels and large-scale distributed automation networks.

Technical Specifications:

• Manufacturer: Allen-Bradley
• Part Number: 1746-NI8
• Series: SLC 500 I/O
• Number of Channels: 8 analog inputs
• Input Type: Analog voltage and current (model dependent)
• Supported Signals: 0-10 V, 4-20 mA (application dependent)
• Resolution: High-resolution ADC for accurate measurement (per datasheet)
• Mounting Type: Rack-mounted module
• Communication Interface: SLC 500 backplane connection
• Compatible Controllers: Allen-Bradley SLC 500 series
• Operating Temperature: Standard industrial range (typically 0°C to 55°C)

Common Replacements:

• Allen-Bradley 1746-NI4
• Allen-Bradley 1769-IF8
• Siemens 6ES7 331-7KF02-0AB0