Allen Bradley 1794-OF4I Flex I/O Isolated Analog Output Module
Allen Bradley 1794-OF4I Flex I/O Isolated Analog Output Module
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Brand:Allen Bradley PLC Item No.:1794-OF4I Product Origin:USA Product Dimensions:97 x 46 x 53 mm Product Weight:0.11 kg Payment:T/T, Western Union, Credit Card Goods_stock:15 Shipping Port:Xiamen, China Lead Time:1-3 Days Condition:Brand New And Original Warranty:1 Year Certificate:COO
The Allen-Bradley 1794-OF4I is a high-performance isolated analog output module designed for precise process control in distributed automation systems. As part of the Flex I/O family, it enables modular and scalable analog signal output capability for PLC-based control architectures.
With 4 independently isolated analog output channels, the module ensures stable and accurate signal transmission even in electrically noisy industrial environments. Each channel can be configured for voltage or current output depending on application requirements, making it suitable for a wide range of process control devices.
Its isolated design improves reliability by eliminating ground loop issues and reducing signal distortion, making it ideal for critical industrial automation applications.
Technical Specifications
Parameter
Specification
Product Model
1794-OF4I
Product Type
Isolated Analog Output Module
System
Allen-Bradley Flex I/O
Output Channels
4 isolated analog outputs
Output Types
Voltage / Current configurable
Common Ranges
4–20 mA, 0–20 mA, ±10 V
Resolution
16-bit class
Channel Isolation
Yes
Mounting Type
Flex I/O terminal base system
Communication Compatibility
Rockwell Automation PLC systems
Application
Process control and analog actuation
Dimensions
97 × 46 × 53 mm
Weight
0.11 kg (0.24 lb)
Industrial Applications
The Allen-Bradley 1794-OF4I Flex I/O Isolated Analog Output Module is designed for distributed process control systems requiring precise, electrically isolated analog signal outputs. It is commonly used in Flex I/O architectures where each output channel must be isolated to prevent ground loops and improve signal stability in noisy industrial environments.
Typical applications include:
Process control loop output systems
Control of proportional valves in chemical and oil & gas plants
Variable frequency drive (VFD) speed reference signals
Actuator and damper positioning control
Distributed control system (DCS) analog output expansion
Flow, pressure, and temperature control loops
Skid-mounted OEM process equipment
Industrial automation with high electrical noise environments
Product Advantages
4-channel fully isolated analog outputs
High-resolution (16-bit class) signal generation
Supports both current and voltage output types
Excellent resistance to ground loop interference
Modular Flex I/O design for distributed systems
Stable and accurate process control signal output
Compatible with Rockwell Automation PLC ecosystems
Suitable for harsh industrial electrical environments
Technical FAQs
1. What is the main function of this module?
It provides 4 isolated analog output channels for industrial process control.
2. What does “isolated” mean here?
Each channel is electrically isolated, reducing noise and preventing ground loop issues.
3. What types of signals does it output?
It supports configurable analog outputs such as:
4–20 mA / 0–20 mA
±10 V / 0–10 V (depending on configuration)
4. How many channels does it have?
It has 4 independent isolated analog output channels.
5. What is it used to control?
It controls devices like VFDs, control valves, actuators, and proportional devices.
6. Is it suitable for process industries?
Yes, it is widely used in oil & gas, chemical, water treatment, and power systems.
7. Why is isolation important?
It prevents electrical noise, ground loops, and signal instability in industrial environments.
8. Does it require a Flex I/O base?
Yes, it must be installed on a compatible Flex I/O terminal base (e.g., TB series).
9. Is it a digital or analog module?
It is a fully analog output module, not digital.
10. What is its typical performance level?
It typically offers 16-bit class resolution and fast update cycles suitable for control loops.
