ALLEN BRADLEY 1756-IF16 ANALOG INPUT OUTPUT MODULE

Allen-Bradley 1756-IF16 – 16-Channel Analog Input Module

The 1756-IF16 is a high-density analog input module designed for the Allen-Bradley ControlLogix system. This module provides 16 single-ended inputs, 8 differential inputs, or 4 high-speed differential inputs, making it a flexible solution for industrial process monitoring and control applications.

The module supports a variety of analog signal types, including ±10V, 0-10V, 0-5V, and 0-20mA, allowing integration with various industrial sensors, transmitters, and control devices. It utilizes the Sigma-Delta conversion method for high-precision data acquisition and supports IEEE 32-bit floating point or integer mode data representation.

Detailed Technical Specifications

1. General Information

• Manufacturer: Rockwell Automation
• Brand: Allen-Bradley
• Part Number: 1756-IF16
• Series: ControlLogix
• Module Type: Analog Input Module
• Number of Inputs: 16 single-ended, 8 differential, or 4 high-speed differential
• Input Type: Voltage & Current
• Mounting: Installed in a 1756 chassis

2. Electrical Characteristics

Analog Signal Input Ranges

• Voltage Input Ranges:
  • ±10V
  • 0-10V
  • 0-5V
• Current Input Range:
  • 0-20mA

Input Resolution

• ±10.25V Range: 16-bit resolution
• 0-10.25V Range: 16-bit resolution
• 0-5.125V Range: 16-bit resolution

Input Settling Time

• Less than 80ms to 5% of full-scale value

Backplane Power Requirements

• Backplane Current at 5.1V DC: 150mA
• Backplane Current at 24V DC: 65mA
• Total Backplane Power Consumption: 2.33 Watts

Power Dissipation

• Voltage Mode: 2.3W max
• Current Mode: 3.9W max

3. Data Handling & Conversion

• Module Conversion Method: Sigma-Delta (ensures high accuracy and noise reduction)
• Data Format:
  • Integer Mode (Left-Justified, 2’s Complement)
  • IEEE 32-bit Floating Point Mode
• Maximum Input Current (Off-State Leakage): 1.5mA

4. Physical & Environmental Specifications

• Module Width: Single-slot module
• Weight: Approx. 300g (0.66 lbs)
• Operating Temperature Range: 0°C to 60°C (32°F to 140°F)
• Storage Temperature Range: -40°C to 85°C (-40°F to 185°F)
• Humidity Tolerance: 5% to 95% non-condensing
• Vibration Resistance: Tested at 2g @ 10-500 Hz
• Shock Resistance: Tested at 30g operational, 50g non-operational

6. Application Use Cases

The 1756-IF16 is widely used in industrial automation applications where high-resolution analog signal acquisition is required. Some common applications include:

✅ Process Control Systems – Monitors temperature, pressure, level, and flow sensors.
✅ Industrial Automation – Interfaces with analog transducers, load cells, and strain gauges.
✅ Manufacturing & Assembly Lines – Used for closed-loop control in machinery.
✅ Power & Energy Monitoring – Acquires analog voltage and current measurements.
✅ Water Treatment & Utility Plants – Controls pH, turbidity, and chemical dosing systems.
✅ Oil & Gas – Used for pipeline monitoring and pressure control.