The Allen-Bradley 1794-IF4I is a high-performance analog input module designed for the FLEX I/O system. This module provides four isolated analog input channels, offering 16-bit resolution for precise signal monitoring in industrial automation environments. It is engineered to support various voltage and current input configurations, ensuring reliable data acquisition across diverse control applications.
Features
Four isolated analog input channels for enhanced noise immunity and signal integrity.
High-resolution 16-bit data conversion.
Compatible with the Allen-Bradley FLEX I/O platform for flexible distributed I/O architecture.
Supports a nominal 24V DC external power supply.
Robust construction suitable for demanding industrial environments.
Technical Specifications
Module Type
Isolated Analog Input Module
Input Channels
4 Isolated
Resolution
16 bits
Input Voltage Range
+/- 10V
External DC Supply
24V DC nominal
FlexBus Current
50mA
Isolation Voltage
120V continuous
Power Dissipation
2.0 W max @ 31.2V DC
Thermal Dissipation
6.8 BTU/hr max @ 31.2V DC
Operating Temperature
0 to 55 degC (32 to 131 degF)
Storage Temperature
-40 to 85 degC (-40 to 185 degF)
Vibration
5g @ 10 to 500 Hz
Operating Shock
30 g
Installation Guidelines
Ensure the system power is disconnected before installing or removing the module from the terminal base.
Mount the module on a compatible FLEX I/O terminal base in a clean, dry, and vibration-controlled enclosure.
Maintain proper grounding practices to minimize electrical interference and ensure signal accuracy.
Use shielded cables for analog signal wiring to reduce EMI/RFI impact.
Verify that the module is securely seated in the terminal base to ensure proper FlexBus connectivity.
Maintain adequate clearance around the module to allow for proper heat dissipation and airflow.
FAQ
What is the primary function of the 1794-IF4I?
The 1794-IF4I is an isolated analog input module used within the Allen-Bradley FLEX I/O system to convert analog signals from field devices into digital data for processing by a PLC or controller.
Does this module require an external power supply?
Yes, the module requires a nominal 24V DC external power supply to operate the analog input circuitry.
Are the input channels isolated?
Yes, the 1794-IF4I features four isolated input channels, which help prevent ground loops and protect the module from voltage spikes in the field wiring.
