Allen Bradley 1756-IF6I | ControlLogix 6-Channel Isolated Analog Input Module

Product Description

The Allen Bradley 1756-IF6I is a ControlLogix analog input module designed to provide six individually isolated input channels. Using sigma-delta conversion technology, it delivers high-resolution signal processing with multiple input ranges for both voltage and current signals. The module supports flexible data formats, including integer and IEEE 32-bit floating point, making it suitable for precision measurement applications. Although now discontinued, it remains widely referenced in legacy ControlLogix installations.

Technical Specifications

• Manufacturer Allen Bradley

• Product Line ControlLogix 1756 Series

• Product Type Analog Input Module

• Part Number 1756-IF6I

• Weight 1.00 lbs (0.45 kg)

• Inputs 6 isolated analog channels

• Conversion Method Sigma-Delta

• Data Formats

• Integer mode (left justified, 2’s complement)

• IEEE 32-bit floating point

• Input Signal Ranges

• ±10.5 V

• 0–10.5 V

• 0–5.25 V

• 0–21 mA

• Resolution 16-bit

• ±10.5 V: 343 µV/bit

• 0–10.5 V: 171 µV/bit

• 0–5.25 V: 86 µV/bit

• 0–21 mA: 0.34 µA/bit

• Backplane Current Load

• 250 mA @ 5 V DC

• 100 mA @ 24 V DC

• Power Dissipation (Max)

• Voltage mode: 3.7 W

• Current mode: 4.3 W

• Terminal Blocks Supported 1756-TBNH, 1756-TBSH

• UNSPSC 32151705

• Lifecycle Status Discontinued / Obsolete

Application Scenarios

• Precision analog measurement in ControlLogix systems

• Monitoring voltage and current signals in industrial automation

• Legacy installations requiring isolated analog input channels

FAQ

Q: How many input channels does the 1756-IF6I provide?  A: Six isolated analog input channels.

Q: What input ranges are supported?  A: ±10.5 V, 0–10.5 V, 0–5.25 V, and 0–21 mA.

Q: Is the 1756-IF6I still in production?  A: No, it is discontinued but still used in legacy systems.

Comparable Models

• 1756-IF6I: 6 isolated analog inputs (this model)

• 1756-IF8: 8-channel analog input module

• 1756-IF16: 16-channel analog input module