1746-NIO4I | Allen-Bradley SLC 500 Analog Combination Current/Voltage Module

Product Description

The Allen-Bradley 1746-NIO4I is a four-point analog combination module for the SLC 500 series. It provides two analog inputs and two analog outputs, supporting both current and voltage signal ranges. With high resolution, fast update times, and tested isolation, it is designed for precise signal conversion and reliable integration into rack-mounted PLC systems.

Technical Specifications

• Manufacturer Allen-Bradley

• Product Line SLC 500

• Product Type Analog Combination Module

• Part Number 1746-NIO4I

• Weight 1.00 lbs (0.45 kg)

• Inputs 2 analog inputs

• Input Signal Ranges -20 to +20 mA; -10 to +10 VDC

• Outputs 2 analog outputs

• Output Voltage Range -10 to +10 VDC (1 LSB resolution)

• Resolution 16-bit input, 14-bit output

• Bandwidth 10 Hz

• Update Time 512 µs

• Step Response 60 ms input, 2.5 ms output

• Backplane Current Draw 55 mA at 5 VDC; 145 mA at 24 VDC

• Isolation Voltage 500 V tested

• Mounting Rack mountable, 1 slot width

Application Scenarios

• Signal conversion for process control systems requiring both current and voltage inputs

• Industrial automation systems needing precise analog input/output handling

• Applications requiring fast update times and high-resolution data acquisition

• Integration into SLC 500 racks for mixed analog/digital control

FAQ

Q: How many inputs and outputs does the 1746-NIO4I provide?  A: It provides 2 analog inputs and 2 analog outputs.

Q: What is the resolution of the inputs and outputs?  A: Inputs are 16-bit resolution, while outputs are 14-bit resolution.

Q: What isolation voltage is tested for this module?  A: The module is tested to 500 V isolation.

Comparison with Similar Models

• 1746-NI4: Analog input-only module.

• 1746-NO4I: Analog output-only module.

• 1746-NIO4I: Combination module with both inputs and outputs for flexible applications.