Overview

The Allen-Bradley 1756-IF16 is a versatile ControlLogix analog input module designed for industrial automation systems. This module provides flexibility in wiring configurations and supports multiple input signal types such as voltage (±10V, 0-10V, 0-5V) and current (0-20 mA). With a high level of resolution and varying scan times, the 1756-IF16 is well-suited for applications requiring precise analog signal measurement and fast data updates.

Technical Specifications

• Part Number: 1756-IF16
• Manufacturer: Rockwell Automation
• Product Type: Analog Input Module
• Module Series: ControlLogix
• Input Types: 16 single-ended, 8 differential, or 4 high-speed differential channels
• Signal Input: ±10V, 0-10V, 0-5V, 0-20 mA
• Resolution:
  • 320 µV/count (15 bits + sign bipolar) at ±10.25V
  • 160 µV/count (16 bits) at 0-10.25V
  • 80 µV/count (16 bits) at 0-5.125V
  • 0.32 µA/count (16 bits) at 0-20.5 mA
• Settling Time: <80 ms to 5% of full scale
• Scan Time:
  • 16 points single-ended: 16-488 ms
  • 8 points differential: 8-244 ms
  • 4 points high-speed differential: 5-122 ms
• Backplane Current (5.1V): 150 mA
• Backplane Current (24V): 65 mA
• Total Backplane Power: 2.33 W
• Power Consumption: 2.3 Watts (Voltage), 3.9 Watts (Current)
• Module Conversion Method: Sigma-Delta
• Data Format: Integer mode (left justified, 2’s complement), IEEE 32-bit floating point
• Maximum Input Current (Off-State): 1.5 mA
• Overvoltage Protection: 30V DC (voltage) and 8V DC (current)
• Removable Terminal Blocks: 1756-TBCH, 1756-TBS6H

Wiring Configurations

• Single-Ended: Provides 16 channels and is sensitive to noise; best for applications with a common ground.
• Differential: Offers improved noise immunity and uses 8 channels, ideal for applications without a common ground.
• High-Speed Differential: Uses 4 channels and is designed for applications requiring fast data updates, with one channel used for every four.

Applications

The 1756-IF16 module is ideal for applications requiring precise analog input measurement and fast data processing, such as:

• Process control systems
• Industrial automation monitoring
• Machine health and predictive maintenance systems

Additional Information

• Thermal Dissipation (Voltage): 7.84 BTU/hour
• Thermal Dissipation (Current): 13.3 BTU/hour
• Max Input Voltage (Off-State): 30V DC (voltage), 8V DC (current)
• Compatible Terminal Blocks: 1756-TBCH, 1756-TBS6H