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Allen-Bradley 1756-IF8 - ControlLogix Analog Input Module
Allen-Bradley 1756-IF8 - ControlLogix Analog Input Module - Image 2

Allen-Bradley 1756-IF8 – ControlLogix Analog Input Module

Original price was: $3,488.00.Current price is: $3,288.00.

  • Brand: Allen-Bradley
  • Model: 1756-IF8
  • Warranty: One Year
  • Condition: 100% New & Original
  • Product Type: Analog Input Module (ControlLogix Series)
  • Input Channels: 8 analog inputs
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Category: SKU: Allen-Bradley 1756-IF8 Tag:

Description

1. Product Title

Allen-Bradley 1756-IF8 – ControlLogix Analog Input Module

2. Product Overview

The 1756-IF8 is a high-performance analog input module designed for the ControlLogix programmable automation controller (PAC) platform. It provides eight configurable analog input channels, enabling accurate acquisition of process signals such as voltage and current from field instruments.

Engineered for industrial automation environments, the 1756-IF8 supports a wide range of signal types, including ±10V DC, 0–10V DC, 0–5V DC, and 0–20 mA inputs, making it suitable for diverse applications. It utilizes high-resolution sigma-delta conversion to ensure precise signal processing and reliable data acquisition.

This module addresses key challenges such as signal accuracy, noise immunity, and flexible system integration within distributed or local ControlLogix architectures.

 

3. Technical Specifications

  • Brand: Allen-Bradley
  • Model: 1756-IF8
  • Warranty: One Year
  • Condition: 100% New & Original
  • Product Type: Analog Input Module (ControlLogix Series)
  • Input Channels: 8 analog inputs
  • Input Types:
    • Voltage: ±10V, 0–10V, 0–5V
    • Current: 0–20 mA
  • Resolution: 15–16 bits (depending on signal range)
  • Input Configuration:
    • 8 single-ended
    • 4 differential
    • 2 high-speed differential
  • Backplane Power Consumption: Approx. 1.73 W
  • Current Draw:
    • 5.1V DC: ~150 mA
    • 24V DC: ~40 mA
  • Noise Rejection:
    • Common mode: >100 dB
    • Normal mode: >80 dB
  • Isolation: 250V continuous (inputs to backplane)
  • Mounting: ControlLogix chassis (local or remote I/O rack)
  • Dimensions: Approx. 220 × 180 × 54 mm
  • Weight: Approx. 0.35 kg

 

4. Key Features & Benefits

  • Multi-Signal Input Flexibility:
    Supports both voltage and current signals, enabling integration with a wide range of field devices such as transmitters, sensors, and analyzers.
  • High-Resolution Data Acquisition:
    15–16 bit resolution ensures accurate process measurement, improving control loop performance and system reliability.
  • Advanced Noise Immunity:
    High common-mode and normal-mode noise rejection enhances signal integrity in electrically noisy industrial environments.
  • Flexible Wiring Configurations:
    Supports single-ended and differential input modes, allowing adaptation to different installation requirements.
  • Scalable ControlLogix Integration:
    Can be deployed in local or distributed I/O systems, supporting large-scale automation architectures with thousands of I/O points.

 

5. Application Scenarios

  • Process Industries (Oil & Gas, Chemical):
    Used to acquire analog signals such as pressure, flow, and temperature from field transmitters for precise process control.
  • Power Generation Plants:
    Monitors turbine and auxiliary system parameters, ensuring stable and efficient operation.
  • Manufacturing Automation:
    Integrates with sensors and instrumentation in production lines for real-time monitoring and control.

 

6. Frequently Asked Questions (FAQ)

  • Q: What is the primary function of the 1756-IF8?
    A: It is an analog input module that converts field analog signals (voltage/current) into digital data for processing by a ControlLogix PLC.
  • Q: Is 1756-IF8 compatible with legacy systems?
    A: It is designed for ControlLogix platforms. Integration with legacy systems is possible via communication gateways or migration solutions, depending on system architecture.

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