Introduction to the Flex IO High Output Module
The Flex IO High Output Module (1794-OF4I) is a high performance Digital-to-Analog Converter (DAC) module designed for industrial automation applications. With four isolated output channels, the module provides accurate signal conversion and is especially suited for control systems requiring 4-20mA, 0-20mA, and multiple voltage outputs (±10V, 0-10V, ±5V, and 0-5V). Its fast update rate (2.5/5.0 milliseconds per channel) ensures real-time response performance, which is critical for process and motion control applications.
Key Features and Technical Specifications
The 1794-OF4I module offers superior accuracy in signal conversion thanks to its high 15-bit signed resolution. Key technical specifications include:
Output types: 4-20mA, 0-20mA, ±10V, 0-10V, ±5V, 0-5V
Voltage resolution: 0.320 mV/count
Current resolution: 0.656 mA/count
Isolated voltage: 120V continuous (effectively prevents ground loops and noise interference)
Maximum load current for voltage output: 3mA
FlexBus current: 50mA
The module is widely used in PLC control systems, motor drives and test and measurement equipment where high precision and reliability are required.
Comparison with High Speed Input Module (1769-IQ16F)
The 1794-OF4I module excels in analog output control, while the 1769-IQ16F is a 16-point DC High Speed Input Module designed for fast digital signal processing. Key differences include:
Input voltage range: 10-30V DC (up to 60°C ambient temperature)
Built-in digital filtering: configurable delay time from 0ms to 2ms for enhanced noise immunity
Response time: 2ms on to off, 300ms off to on
Power consumption: 110mA at 5.1V DC
The 1769-IQ16F module is especially suited for high-speed counting, encoder interfacing and applications such as fast response sensor inputs, while the 1794-OF4I is more focused on analog control applications.
Applications in Industrial Automation
A. Process Control Systems
4-20mA current loops for pressure, temperature, and flow control
Voltage outputs for servo drives and actuator positioning
B. Test and Measurement Equipment
Precision signal generation for calibrating equipment
Data acquisition systems requiring isolated outputs
C. Motion Control and Robotics
Analog command signals for motor speed and torque control
Closed-loop feedback systems with high resolution outputs
Advantages of Using the 1794-OF4I Module
High resolution (15-bit+): Ensures precise control in sensitive applications
Fast update rate (2.5/5.0ms): Minimizes real-time system latency
Isolated outputs: Effectively protects against electrical noise and ground-loop problems
Wide output range: Supports a wide range of current and voltage configurations
Compact, modular design: Easily integrates into Allen- Bradley Flex I/O systems. Bradley Flex I/O System
Conclusion
The Flex IO High Output Module (1794-OF4I) is a versatile and reliable solution for industrial automation, providing high-speed, high-precision analog outputs for a variety of applications. Whether used in process control, test and measurement, or motion systems, the module ensures accurate signal conversion and robust isolation.
The 1794-OF4I is an excellent choice for engineers looking for a high-performance analog output module, while the 1769-IQ16F remains ideal for fast digital input processing applications.
sales7@amikon.cn 
86-18965423501
AMKPLC 
Disclaimer
Plcnew sells new and surplus products and develops channels to purchase such products.
This site is not approved or endorsed by any of the listed manufacturers or trademarks.
Plcnew is not an authorized distributor, dealer or representative of the products displayed on this site.
All product names, trademarks, brands and logos used on this site are the property of their respective owners.
The description, illustration or sale of products under these names, trademarks, brands and logos is
for identification purposes only and is not intended to indicate any affiliation with or authorization
by any rights holder.
