Allen-Bradley 1756-IB16IF ControlLogix Fast Digital DC Isolated Input Module

The 1756-IB16IF is a high-speed digital I/O module designed for use with the Allen-Bradley ControlLogix system. It provides 16 individually isolated digital inputs, enabling precise monitoring and control of digital signals in industrial automation. This module is ideal for applications that require fast response times and high isolation to protect against electrical noise and signal interference. It supports CIP synchronization for consistent timing across the system and can detect pulses as short as 10 µs.

Technical Specifications

• Manufacturer: Rockwell Automation
• Brand: Allen-Bradley
• Part Number: 1756-IB16IF
• Series: ControlLogix
• Module Type: Fast Digital DC Isolated Input
• Inputs: 16 Individually Isolated
• Input Voltage: 12-24 Volts DC
• Operating Voltage Range: 10-30 Volts DC
• Weight: 0.95 lbs

Performance Specifications

• Input Delay Time: 14 microseconds plus the selected filter time
• Current Draw (5.1 Volts): 275 milliamps
• Current Draw (24 Volts): 3 milliamps
• Power Dissipation: 3.8 Watts
• Thermal Dissipation: 12.97 BTU per hour
• Backplane Current: 1.47 Watts

Event and Pulse Detection

• Pulse Duration Detection: Minimum 10 µs at 4 kHz frequency within 250 µs
• Event Task Initiation: Supports four user-defined input patterns to trigger tasks

Tagging and Filter Function

• Tags: Configuration, event, and input tags are used for communication between the controller and the I/O module
• Input Filter: The input delay time is 14 µs for ‘off’ to ‘on’ and 23 µs for ‘on’ to ‘off’, plus the user-configurable filter time (0 to 30,000 µs)

Electrical and Power Specifications

• Operating Voltage: 10 to 30 V DC
• Voltage Category: 12/24 V DC sink/source
• Current in Off-State: Maximum 5 V and 1.5 mA
• Current in On-State: Ranges from 2 mA at 10V DC to 5 mA at 30V DC