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- Allen Bradley
- 1797-OB4D
- Flex Ex I/O Source Digital Output Module
- USA
- 94 x 46 x 75 mm
- 0.2 kg
- Xiamen, China
- New & In Stock
- T/T, PayPal, Western Union
- 1 Year
- 1-3 Working Days
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We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
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Product Overview
In industrial automation, reliable digital output control is essential for driving actuators, indicators, and other field devices. The Allen Bradley 1797-OB4D Flex Ex I/O Source Digital Output Module provides a compact and robust solution for controlling devices in hazardous and standard industrial environments.
This module ensures accurate and safe signal transmission to field devices, supporting scalable and distributed Flex Ex I/O networks while maintaining system integrity and operational safety.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Allen Bradley |
| Model | 1797-OB4D |
| Product Type | Flex Ex I/O Source Digital Output Module |
| Function | Source digital output control |
| Number of Channels | 4 digital outputs |
| Output Type | Sourcing (positive voltage) |
| Communication Protocol | Flex Ex I/O |
| Dimensions | 94 × 46 × 75 mm |
| Weight | 0.2 kg |
| Mounting Type | Panel / DIN Rail Mountable |
| Isolation | Electrical isolation for safe operation |
| Operating Temperature | 0°C to 60°C |
| Environment | Industrial-grade, hazardous area compatible |
| Application | Controlling actuators, indicators, and other field devices |
Function and Working Principle
The 1797-OB4D module operates by providing sourcing digital outputs to field devices. Key functions include:
- Supplies positive voltage digital outputs to drive connected devices
- Provides electrical isolation to protect controllers and network devices
- Supports reliable operation in hazardous and distributed environments
- Includes diagnostic indicators for monitoring output status
By delivering precise digital output control, this module ensures safe and efficient operation of industrial equipment.
Role in Industrial Control Systems
This Flex Ex Source Digital Output module is critical for industrial automation systems by:
- Controlling actuators, relays, lights, and other field devices
- Ensuring reliable digital signal transmission across hazardous area networks
- Supporting modular I/O expansion with safe electrical isolation
- Maintaining continuous operation and communication integrity
It acts as the interface between the controller and field devices, ensuring secure and efficient digital control.
Industrial Applications
The Allen Bradley 1797-OB4D is commonly applied in:
- Industrial control of motors, solenoids, and relays
- Hazardous area Flex Ex I/O networks in chemical and petrochemical plants
- Distributed control systems requiring safe and reliable digital outputs
- Process automation for actuators, indicators, and alarms
- Safety-critical operations needing electrically isolated outputs
Its compact and rugged design allows easy installation in panels or DIN rails, suitable for hazardous industrial environments.
Installation and System Integration
Proper installation ensures optimal performance:
- Mounted on panels or DIN rails following manufacturer guidelines
- Connected to field devices according to wiring standards
- Integrated into Flex Ex I/O networks for distributed and hazardous area control
- Ensure proper grounding, isolation, and adherence to safety standards
- Follow industrial safety and environmental requirements
Correct installation guarantees safe, accurate, and continuous digital output operation.
Compatible System Components
The 1797-OB4D typically integrates with:
- Allen Bradley Flex Ex controllers
- Flex Ex I/O input and output modules, including analog and digital types
- Field devices such as solenoids, relays, actuators, and indicator lights
- Bus isolators and connectors for hazardous area networks
Together, these components form a secure, scalable, and reliable industrial automation system.
Recommended Alternative Models
| Model | Type | Key Feature | Application |
|---|---|---|---|
| 1797-OB4D | Source Digital Output Module | 4-channel sourcing output | Standard digital control |
| 1797-OB8D | Source Digital Output Module | 8-channel output | High-density digital control |
| 1797-OB4R | Relay Digital Output Module | Relay-driven output | Hazardous area and high-current applications |
| 1797-BIC | Bus Isolator Module | Electrical isolation for I/O bus | Hazardous area networks |
Key Advantages
- Provides reliable sourcing digital outputs for industrial field devices
- Electrical isolation ensures safe operation in hazardous environments
- Compact and rugged construction suitable for panel or DIN rail installation
- Supports scalable Flex Ex I/O network architectures
- Reliable and continuous operation for industrial automation
- Compatible with a wide range of actuators, relays, and indicators
- Enhances system performance, safety, and communication integrity
Technical FAQs
What is the main function of the 1797-OB4D?
It provides sourcing digital outputs to control actuators, relays, and other field devices in industrial automation systems.
Where is it typically used?
It is used in hazardous and industrial environments for controlling digital output devices safely.
Does it provide electrical isolation?
Yes, built-in isolation protects the module and connected devices from electrical faults.
Can it drive multiple devices simultaneously?
Yes, it supports 4 digital output channels for standard industrial applications.
Conclusion
The Allen Bradley 1797-OB4D Flex Ex I/O Source Digital Output Module is a reliable and compact solution for controlling industrial field devices safely and efficiently.
For engineers and system integrators, this module ensures accurate, isolated, and continuous digital output control, supporting efficient and safe operation in hazardous or distributed industrial environments.