Allen Bradley 10VDC 20A SLC500 Analog Input Module 1746-NI4 /A

Allen-Bradley 1746-NI4 Analog Input Module

The Allen-Bradley 1746-NI4 is a 4-channel analog input module designed for the SLC 500 series programmable logic controllers (PLCs). This module facilitates precise monitoring and control of analog signals within industrial automation systems.

Key Features

• Input Channels: Four differential, individually configurable for voltage or current inputs.
• Input Signal Ranges: Voltage: ±10V DC; Current: ±20 mA.
• Resolution: 16-bit analog-to-digital conversion for accurate signal processing.
• Update Time: 512 microseconds for all channels, ensuring timely data acquisition.
• Isolation Voltage: 500V DC between field wiring and backplane, enhancing system safety.
• Operating Temperature: 0°C to 60°C (32°F to 140°F), suitable for various industrial environments.
• Compatibility: Seamlessly integrates with SLC 500 chassis and processors.

Technical Specifications

• Backplane Current: 25 mA at 5V DC; 85 mA at 24V DC.
• Input Impedance: Voltage: 1 MΩ; Current: 250 Ω.
• Accuracy: ±0.1% of full scale.
• Common Mode Voltage Range: -20 to +20 volts.
• Bandwidth: 10 Hz.
• Storage Temperature: -40°C to 85°C (-40°F to 185°F).
• Relative Humidity: 5% to 95% non-condensing.
• Certifications: UL, CSA, CE.

Applications

The 1746-NI4 module is ideal for applications requiring precise analog signal measurement, such as:

• Process control systems.
• Temperature and pressure monitoring.
• Flow measurement in utilities.
• Food and beverage processing.
• Pharmaceutical manufacturing.

Installation and Maintenance

• Install in a clean, dry panel or cabinet.
• Ensure proper alignment in the chassis slot.
• Configure each channel for voltage or current input using DIP switches.
• Periodically inspect for dust or electrical wear.
• Use RSLogix 500 for diagnostics and setup.
• Power down before removing or inserting the module.

The Allen-Bradley 1746-NI4 analog input module offers reliable and accurate analog signal processing, making it a valuable component in various industrial automation applications.