1746-NI16I | Allen-Bradley SLC 500 Analog Current Input Module 16-Inputs
1746-NI16I | Allen-Bradley SLC 500 Analog Current Input Module 16-Inputs
1746-NI16I | Allen-Bradley SLC 500 Analog Current Input Module 16-Inputs
1746-NI16I | Allen-Bradley SLC 500 Analog Current Input Module 16-Inputs
1746-NI16I | Allen-Bradley SLC 500 Analog Current Input Module 16-Inputs
1746-NI16I | Allen-Bradley SLC 500 Analog Current Input Module 16-Inputs
1746-NI16I | Allen-Bradley SLC 500 Analog Current Input Module 16-Inputs
1746-NI16I | Allen-Bradley SLC 500 Analog Current Input Module 16-Inputs
1746-NI16I | Allen-Bradley SLC 500 Analog Current Input Module 16-Inputs
    1746-NI16I | Allen-Bradley SLC 500 Analog Current Input Module 16-Inputs
    1746-NI16I | Allen-Bradley SLC 500 Analog Current Input Module 16-Inputs
    1746-NI16I | Allen-Bradley SLC 500 Analog Current Input Module 16-Inputs
1746-NI16I | Allen-Bradley SLC 500 Analog Current Input Module 16-Inputs
1746-NI16I | Allen-Bradley SLC 500 Analog Current Input Module 16-Inputs
1746-NI16I | Allen-Bradley SLC 500 Analog Current Input Module 16-Inputs

1746-NI16I | Allen-Bradley SLC 500 Analog Current Input Module 16-Inputs

Part #: 1746-NI16I Manufactured by: Allen-Bradley
Regular price
$1,729.00
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$1,729.00
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Condition: New-Surplus Original Box
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Product Overview
The Allen-Bradley 1746-NI16I is a SLC 500 Analog I/O Module. This Analog I/O Module has 16 Inputs and a Backplane Current ...  Read more
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Product Description P/N: 1746-NI16I

Description / Specifications

Description 

The Allen-Bradley 1746-NI16I is an analog input module designed for SLC 500 systems. It provides 16 isolated analog input channels for precise signal acquisition from sensors and transmitters.

 

 

Technical Specifications 

Brand Allen-Bradley
Series SLC 500
Part Number 1746-NI16I
Manufacturer Rockwell Automation
Module Type Analog I/O Module
Backplane Current (5 Volts) 125 milliamps
Inputs 16
Backplane Current (24 Volts DC) 75 milliamps
Electrical Signal type 0 to 20 mA, 4 to 20 mA, ±20 mA, and 0 to 1 mA
Bandwidth 6-250 Hertz
Chassis location Any I/O module slot except slot 0
Step Response 9-630 milliseconds
Backplane Current (5 Volts) 125 mA;(24 Volts DC)75 mA
Conversion type Sigma - Delta
Thermal Dissipation 2.43 Watts
Input Filtering Low-pass digital filter with programmable filter frequencies
Applications Combination 120 Volts AC I/O
Input Filter Frequencies 6 Hz, 10 Hz, 20 Hz, 40 Hz, 60 Hz, 80 Hz, 100 Hz, 250 Hz
Isolation 500V ac isolation for 1 second
LED Indicators 5 green status indicators one for each group of 4 channels, and one for module status

  

 

Information About 1746-NI16I

The 1746-NI16I is part of the Allen-Bradley SLC 500 I/O family, developed to provide high-density analog signal integration. This module supports 16 individually isolated analog inputs, configurable for current or voltage ranges such as 0–20 mA, 4–20 mA, 0–10V, and ±10V. With 16-bit resolution, it ensures accurate measurement of process variables such as temperature, pressure, flow, and level. The isolated channel design enhances noise immunity, making it suitable for demanding environments. The module communicates with the SLC 500 processor via the backplane, ensuring fast and reliable data exchange. Compact and rack-mounted, the 1746-NI16I simplifies system design while offering robust analog signal handling for industrial applications.

Key Features:

  • Design: High-density analog input module for SLC 500 systems.
  • Channels: 16 isolated analog input channels.
  • Signal Ranges: Supports current and voltage inputs (0–20 mA, 4–20 mA, 0–10V, ±10V).
  • Resolution: 16-bit conversion for precise and accurate measurement.
  • Isolation: Individually isolated channels improve reliability and noise immunity.
  • Compatibility: Works with Allen-Bradley SLC 500 processors and chassis.
  • Diagnostics: Channel and module status indicators simplify troubleshooting.
  • Application Range: Suitable for monitoring process variables in industrial automation.

The 1746-NI16I delivers the accuracy, flexibility, and reliability required for high-density analog signal acquisition in SLC 500 control systems.


 

Manufacturer information

Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.

Frequently Asked Questions about 1746-NI16I
Question: What is the 1746-NI16I and what is it used for?
Date Update:29/05/2025
Answer:

The 1746-NI16I is a 16-channel analog input module from the Allen-Bradley SLC 500 series. It is designed to receive analog signals in current format and convert them to digital values for processing by the SLC processor. This module supports signal types such as 0–20 mA, 4–20 mA, ±20 mA, and 0–1 mA, making it ideal for connecting sensors and transmitters in process automation systems. It is commonly used for measuring variables such as temperature, pressure, and flow, especially in applications requiring high-resolution analog feedback for control purposes.

Question: What are the electrical requirements of the module?
Date Update:29/05/2025
Answer:
  • Backplane Current: 125 mA @ 5V DC; 75 mA @ 24V DC
  • Thermal Dissipation: 2.43 W
  • Input Impedance: 249 ohms
  • Voltage Isolation: 500V AC for 1 second between input terminals and backplane

The module is installed in a single I/O slot (except slot 0) and connects to the processor through the chassis backplane, with no need for external power supply wiring.

Question: How fast is the module’s response time?
Date Update:29/05/2025
Answer:

The step response time of the module ranges from 9 to 630 milliseconds, depending on the selected filter setting. This makes the module suitable for moderately fast control loops such as temperature regulation, level monitoring, and flow control systems. The time to first scan update upon power-up is typically less than 5 seconds.

Question: Can the 1746-NI16I detect input faults?
Date Update:29/05/2025
Answer:

Yes, the module features open-circuit detection capabilities, which are useful for identifying sensor disconnections or wiring faults. It also provides visual feedback via five green status LEDs—four for the channel groups (each LED covers four channels) and one for module status. These indicators assist maintenance teams in quickly diagnosing module and channel issues.

Question: Is the 1746-NI16I still in production?
Date Update:29/05/2025
Answer:

No, the 1746-NI16I has been officially discontinued by Rockwell Automation. The discontinuation is effective as of September 30, 2024, after which the module will no longer be available for sale. Users are encouraged to plan migration strategies and reference engineering replacement solutions for future system upgrades.

IQElectro is not an authorized distributor.
IQElectro LLC (IQElectro) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens, or any other Manufacturers. IQElectro is NOT an Authorized Dealer of this product. The product may be of older version, date codes, or design than that available from authorized dealers. As IQElectro is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. IQElectro sells SURPLUS only and DOES NOT SELL SOFTWARE or FIRMWARE licenses For more detailed information, please refer to the full version of our disclaimer policy Disclaimer Policy.
Description / Specifications

Description 

The Allen-Bradley 1746-NI16I is an analog input module designed for SLC 500 systems. It provides 16 isolated analog input channels for precise signal acquisition from sensors and transmitters.

 

 

Technical Specifications 

Brand Allen-Bradley
Series SLC 500
Part Number 1746-NI16I
Manufacturer Rockwell Automation
Module Type Analog I/O Module
Backplane Current (5 Volts) 125 milliamps
Inputs 16
Backplane Current (24 Volts DC) 75 milliamps
Electrical Signal type 0 to 20 mA, 4 to 20 mA, ±20 mA, and 0 to 1 mA
Bandwidth 6-250 Hertz
Chassis location Any I/O module slot except slot 0
Step Response 9-630 milliseconds
Backplane Current (5 Volts) 125 mA;(24 Volts DC)75 mA
Conversion type Sigma - Delta
Thermal Dissipation 2.43 Watts
Input Filtering Low-pass digital filter with programmable filter frequencies
Applications Combination 120 Volts AC I/O
Input Filter Frequencies 6 Hz, 10 Hz, 20 Hz, 40 Hz, 60 Hz, 80 Hz, 100 Hz, 250 Hz
Isolation 500V ac isolation for 1 second
LED Indicators 5 green status indicators one for each group of 4 channels, and one for module status

  

 

Information About 1746-NI16I

The 1746-NI16I is part of the Allen-Bradley SLC 500 I/O family, developed to provide high-density analog signal integration. This module supports 16 individually isolated analog inputs, configurable for current or voltage ranges such as 0–20 mA, 4–20 mA, 0–10V, and ±10V. With 16-bit resolution, it ensures accurate measurement of process variables such as temperature, pressure, flow, and level. The isolated channel design enhances noise immunity, making it suitable for demanding environments. The module communicates with the SLC 500 processor via the backplane, ensuring fast and reliable data exchange. Compact and rack-mounted, the 1746-NI16I simplifies system design while offering robust analog signal handling for industrial applications.

Key Features:

  • Design: High-density analog input module for SLC 500 systems.
  • Channels: 16 isolated analog input channels.
  • Signal Ranges: Supports current and voltage inputs (0–20 mA, 4–20 mA, 0–10V, ±10V).
  • Resolution: 16-bit conversion for precise and accurate measurement.
  • Isolation: Individually isolated channels improve reliability and noise immunity.
  • Compatibility: Works with Allen-Bradley SLC 500 processors and chassis.
  • Diagnostics: Channel and module status indicators simplify troubleshooting.
  • Application Range: Suitable for monitoring process variables in industrial automation.

The 1746-NI16I delivers the accuracy, flexibility, and reliability required for high-density analog signal acquisition in SLC 500 control systems.


 

Manufacturer information

Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.

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