Allen-Bradley | 1746-NI4 | SLC 500

Product Description: Allen-Bradley 1746-NI4

The Allen-Bradley 1746-NI4 is a 4-channel analog input module built for use within the SLC 500 controller platform. It supports both voltage and current input signals and delivers accurate, isolated analog measurements for mid- sized industrial automation systems. With flexible configuration options and dependable performance, this module is ideal for acquiring signals from various analog field devices.

Key Features

• 4 configurable analog input channels
• Accepts both voltage (±10V, 0–10V) and current (4–20 mA, 0–20 mA) inputs
• 16-bit resolution ensures high signal fidelity
• Individually isolated inputs enhance signal integrity
• LED indicators for easy module diagnostics
• Seamless compatibility with SLC 500 chassis and processors
• Front access terminal block simplifies wiring

Technical Specifications

• Number of Channels: 4 Analog Inputs
• Input Signal Ranges:
  • Voltage: ±10V, 0–10V
• Resolution: 16 bits (1 part in 65,536)
• Accuracy: ±0.1% of full scale
• Input Impedance:
  • Voltage: ≥1 MΩ
• Backplane Current Draw: 100 mA at 5V DC, 120 mA at 24V DC
• Isolation: 1500V RMS (channel-to-backplane)
• Operating Temperature: 0°C to 60°C
• Module Width: 1 slot

Application Areas

• Analog sensor monitoring (temperature, pressure, flow, level)
• Machine and process control systems
• Water treatment and environmental monitoring
• Industrial automation and SCADA systems
• Medium-scale data acquisition setups

Advantages

• Versatile signal compatibility supports wide sensor range
• High-resolution input for precision monitoring
• Fewer channels per module for cost-efficient small systems
• Reliable isolation protects PLC and enhances signal stability
• Simple integration and configuration within SLC 500 systems