1794-IF-41

Overview of Allen-Bradley 1794-IF4I FLEX I/O Isolated Analog Input Module

The Allen-Bradley 1794-IF4I is a Flex I/O analog input module with four isolated analog input channels. It can accept voltage and current inputs, including 4-20 mA, 0-20 mA, ±20 mA, ±10 V, 0-10 V, ±5 V, and 0-5 V signals. The module offers high accuracy and resolution with 16-bit sigma-delta conversion and supports open-style mounting on DIN rails or panels.

Key Features of 1794-IF4I

• Four isolated analog input channels supporting voltage and current signals.
• Input ranges are user-configurable: 4-20 mA, 0-20 mA, ±20 mA, ±10 V, 0-10 V, ±5 V, and 0-5 V.
• 16-bit sigma-delta analog-to-digital converter with high accuracy (0.1% full scale at 25 °C).
• Fast conversion times with selectable update rates (2.5, 5.0, or 7.5 milliseconds per channel).
• Isolated inputs with continuous isolation voltage up to 120 V (250 V with certain terminal bases).
• Open-style enclosure with DIN rail or panel mounting options.
• Power supply: 24 V DC nominal with a current draw of approximately 80 mA.
• Operating temperature range: -20 to 55 °C (-4 to 131 °F).
• Complies with multiple certifications including CE, UL, CSA, and others.

Technical Specifications

Applications / Use Cases

The 1794-IF4I analog input module is ideal for distributed I/O applications requiring precise and isolated analog signal measurement. It is widely used in industrial automation for monitoring sensors such as thermocouples, RTDs, and industrial transducers in process control, machine automation, and environmental monitoring.