Analog Input/Output Module | Allen-Bradley 1746-NIO4I

Overview

The Allen-Bradley 1746-NIO4I is a precision analog input/output module designed for SLC 500 control systems. It combines two high-resolution analog inputs and two analog outputs in a single module, providing accurate signal processing for industrial automation applications. The module is engineered for fast update rates, reliable backplane performance, and robust isolation for safe operation.

Technical Specifications

Module Details

• Model: 1746-NIO4I

• Manufacturer: Allen-Bradley

• Product Type: Combination Analog Input/Output Module

• I/O Configuration: 2 analog inputs / 2 analog outputs

Input & Output Ranges

• Input Ranges: ±20 mA, ±10 V DC

• Output Range: ±10 V DC - 1 LSB

• Resolution: 16 bits (input), 14 bits (output)

• Update Time: 512 µs per channel

• Bandwidth: 10 Hz

• Step Response: 60 ms input, 2.5 ms output

Electrical & Backplane

• Backplane Current (5 V): 55 mA

• Backplane Current (24 V): 145 mA

• Tested Isolation Voltage: 500 V

Physical & Environmental

• Weight: 1.00 lb (0.45 kg)

• Mounting: Standard SLC 500 chassis slot

Applications

The 1746-NIO4I is ideal for systems requiring precise analog monitoring and control, including process control loops, sensor signal processing, and actuator control in manufacturing automation. Its combination I/O configuration allows flexible integration in compact system designs.

FAQ

Q: How many analog channels does the module provide?
A: 2 analog inputs and 2 analog outputs.

Q: What is the input signal range?
A: ±20 mA and ±10 V DC.

Q: How fast is the module update time?
A: 512 microseconds per channel.

Q: Is the module isolated for safety?
A: Yes, it has tested isolation voltage of 500 V.