1756-IF8 | Allen-Bradley ControlLogix Analog Input Module Current/Voltage 8-Points
1756-IF8 | Allen-Bradley ControlLogix Analog Input Module Current/Voltage 8-Points
1756-IF8 | Allen-Bradley ControlLogix Analog Input Module Current/Voltage 8-Points
1756-IF8 | Allen-Bradley ControlLogix Analog Input Module Current/Voltage 8-Points
1756-IF8 | Allen-Bradley ControlLogix Analog Input Module Current/Voltage 8-Points
1756-IF8 | Allen-Bradley ControlLogix Analog Input Module Current/Voltage 8-Points
    1756-IF8 | Allen-Bradley ControlLogix Analog Input Module Current/Voltage 8-Points
    1756-IF8 | Allen-Bradley ControlLogix Analog Input Module Current/Voltage 8-Points
1756-IF8 | Allen-Bradley ControlLogix Analog Input Module Current/Voltage 8-Points
1756-IF8 | Allen-Bradley ControlLogix Analog Input Module Current/Voltage 8-Points

1756-IF8 | Allen-Bradley ControlLogix Analog Input Module Current/Voltage 8-Points

Part #: 1756-IF8 Manufactured by: Allen-Bradley
Regular price
$357.00
Sale price
$357.00
Regular price
3 in Stock
Condition: New – Open box
Shipping calculated at checkout.
Product Overview
The Allen-Bradley 1756-IF8 is a ControlLogix Analog Input Module designed for 8 input points, accommodating both current a...  Read more
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Product Description P/N: 1756-IF8

Description / Specifications

Description 

The Allen-Bradley 1756-IF8 is an analog input module from the ControlLogix family. It provides eight configurable input channels supporting ±10 VDC, 0–10 VDC, 0–5 VDC, and 0–20 mA signal ranges. With up to 16-bit resolution and flexible wiring modes, this module is widely used in industrial automation for connecting transmitters, transducers, and other analog devices.

 

 

Technical Specifications 

Condition New/Never Used Surplus
Brand Allen-Bradley
Category I/O Modules
Part Number 1756-IF8
Subcategory Analog Input Modules
Series ControlLogix
Number of Channels 8
Input Types Voltage / Current
Supported Ranges ±10 V, 0–10 V, 0–5 V, 0–20 mA
Resolution 15–16 bit depending on range
Conversion Method Sigma-Delta
Data Format Integer (2’s complement) / IEEE 32-bit float
Wiring Modes Single-ended, differential, high-speed differential
High-Speed Inputs 2 differential
Terminal Blocks 1756-TBCH or 1756-TBSH (required)
Backplane Current (5V) 150 mA
Backplane Current (24V) 40 mA
Power Dissipation Voltage: 1.73 W / Current: 2.33 W
Overvoltage Protection Up to 30 VDC (voltage mode)
Operating Temperature 0–60 °C
Certifications CE, CSA, KC, Marine, NRTL, RCM, UL
Enclosure Type Open-style
Mounting Chassis
Weight 0.75 lbs

  

 

Information About 1756-IF8

The 1756-IF8 is part of Rockwell Automation’s ControlLogix family, engineered to interface multiple analog signals with advanced precision and configurability. It supports eight inputs that can be wired in single-ended, differential, or high-speed differential modes, letting users balance noise immunity, update rates, or channel count based on application needs. With Sigma-Delta conversion, the module digitizes ±10 VDC signals at 15-bit resolution and delivers 16-bit precision for 0–10 V, 0–5 V, and 0–20 mA inputs, enabling accurate data acquisition for process and machine control. Built with robust diagnostics including wire-off, over/under-range, process alarms, and rate monitoring, it integrates seamlessly into ControlLogix architectures while maintaining stable operation across industrial temperature ranges.

Key Features:

  • Eight Analog Input Channels: Provides flexible connection points for voltage or current signals within a ControlLogix rack.
  • Multiple Input Ranges: Supports ±10 VDC, 0–10 VDC, 0–5 VDC, and 0–20 mA inputs for diverse field instrumentation.
  • High-Precision Conversion: Offers 15–16 bit resolution for accurate monitoring of process variables.
  • Configurable Wiring Modes: Operates in single-ended, differential, and high-speed differential modes for optimized performance.
  • Sigma-Delta Architecture: Ensures stable, noise-resistant digital conversion across all channel types.
  • Advanced Diagnostics: Features wire-off detection, range alarms, and process alerts to enhance system reliability.
  • Flexible Data Formats: Outputs both integer and IEEE floating-point data for ease of integration with PLC logic.
  • Terminal Block Compatibility: Requires 1756-TBCH or 1756-TBSH blocks for safe and organized field wiring.
  • High Noise Immunity: Differential channels offer improved signal stability in electrically harsh environments.
  • Wide Temperature Endurance: Maintains full performance from 0–60 °C for demanding industrial applications.

The 1756-IF8 delivers the reliability and precision required for high-performance analog signal acquisition in ControlLogix automation systems.

Frequently Asked Questions about 1756-IF8
Question: What types of analog signals can the 1756-IF8 module handle?
Date Update:23/05/2025
Answer:

The 1756-IF8 module supports multiple analog input signal types, including:

  • Voltage: ±10V, 0–10V, 0–5V
  • Current: 0–20 mA
Question: How many channels does the 1756-IF8 module have, and what are their configurations?
Date Update:23/05/2025
Answer:

The module provides 8 analog input channels, which can be configured as:

  • Single-ended
  • Differential
  • High-speed differential
Question: What is the resolution and accuracy of the 1756-IF8 module?
Date Update:23/05/2025
Answer:

The module offers high-resolution analog-to-digital conversion:

  • ±10.25V: 320 µV/count (15 bits plus sign)
  • 0–10.25V: 160 µV/count (16 bits)
  • 0–5.125V: 80 µV/count (16 bits)
  • 0–20.5 mA: 0.32 µA/count (16 bits)
Question: Does the 1756-IF8 module provide channel-to-channel isolation?
Date Update:23/05/2025
Answer:

No, the 1756-IF8 module does not offer isolation between individual channels. However, it provides 250V continuous isolation between the input channels and the backplane, ensuring protection for the controller and other modules in the system.

Question: What are the power requirements and environmental specifications for the 1756-IF8 module?
Date Update:23/05/2025
Answer:

1. Power Requirements:

  • Backplane Current (5V): 150 mA
  • Backplane Current (24V): 40 mA
  • Power Dissipation: 1.73 W (voltage mode), 2.33 W (current mode)rexelusa.com+12NexAuto Technology Limited+12plc-hub.com+12

2. Environmental Specifications:

  • Operating Temperature: 0°C to 60°C (32°F to 140°F)
  • Storage Temperature: -40°C to 85°C (-40°F to 185°F)
  • Relative Humidity: 5% to 95% non-condensing
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Description / Specifications

Description 

The Allen-Bradley 1756-IF8 is an analog input module from the ControlLogix family. It provides eight configurable input channels supporting ±10 VDC, 0–10 VDC, 0–5 VDC, and 0–20 mA signal ranges. With up to 16-bit resolution and flexible wiring modes, this module is widely used in industrial automation for connecting transmitters, transducers, and other analog devices.

 

 

Technical Specifications 

Condition New/Never Used Surplus
Brand Allen-Bradley
Category I/O Modules
Part Number 1756-IF8
Subcategory Analog Input Modules
Series ControlLogix
Number of Channels 8
Input Types Voltage / Current
Supported Ranges ±10 V, 0–10 V, 0–5 V, 0–20 mA
Resolution 15–16 bit depending on range
Conversion Method Sigma-Delta
Data Format Integer (2’s complement) / IEEE 32-bit float
Wiring Modes Single-ended, differential, high-speed differential
High-Speed Inputs 2 differential
Terminal Blocks 1756-TBCH or 1756-TBSH (required)
Backplane Current (5V) 150 mA
Backplane Current (24V) 40 mA
Power Dissipation Voltage: 1.73 W / Current: 2.33 W
Overvoltage Protection Up to 30 VDC (voltage mode)
Operating Temperature 0–60 °C
Certifications CE, CSA, KC, Marine, NRTL, RCM, UL
Enclosure Type Open-style
Mounting Chassis
Weight 0.75 lbs

  

 

Information About 1756-IF8

The 1756-IF8 is part of Rockwell Automation’s ControlLogix family, engineered to interface multiple analog signals with advanced precision and configurability. It supports eight inputs that can be wired in single-ended, differential, or high-speed differential modes, letting users balance noise immunity, update rates, or channel count based on application needs. With Sigma-Delta conversion, the module digitizes ±10 VDC signals at 15-bit resolution and delivers 16-bit precision for 0–10 V, 0–5 V, and 0–20 mA inputs, enabling accurate data acquisition for process and machine control. Built with robust diagnostics including wire-off, over/under-range, process alarms, and rate monitoring, it integrates seamlessly into ControlLogix architectures while maintaining stable operation across industrial temperature ranges.

Key Features:

  • Eight Analog Input Channels: Provides flexible connection points for voltage or current signals within a ControlLogix rack.
  • Multiple Input Ranges: Supports ±10 VDC, 0–10 VDC, 0–5 VDC, and 0–20 mA inputs for diverse field instrumentation.
  • High-Precision Conversion: Offers 15–16 bit resolution for accurate monitoring of process variables.
  • Configurable Wiring Modes: Operates in single-ended, differential, and high-speed differential modes for optimized performance.
  • Sigma-Delta Architecture: Ensures stable, noise-resistant digital conversion across all channel types.
  • Advanced Diagnostics: Features wire-off detection, range alarms, and process alerts to enhance system reliability.
  • Flexible Data Formats: Outputs both integer and IEEE floating-point data for ease of integration with PLC logic.
  • Terminal Block Compatibility: Requires 1756-TBCH or 1756-TBSH blocks for safe and organized field wiring.
  • High Noise Immunity: Differential channels offer improved signal stability in electrically harsh environments.
  • Wide Temperature Endurance: Maintains full performance from 0–60 °C for demanding industrial applications.

The 1756-IF8 delivers the reliability and precision required for high-performance analog signal acquisition in ControlLogix automation systems.

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