Allen Bradley vs Rockwell PLC: Key Differences, Features & Comparison Guide
In the realm of industrial automation, Allen Bradley and Rockwell Automation are two names that frequently come up. Often used interchangeably, understanding the relationship between these two entities is crucial for engineers, technicians, and anyone involved in automation projects. This comprehensive guide delves into the key differences, features, and provides a detailed comparison to help you navigate the world of Allen Bradley and Rockwell PLCs (Programmable Logic Controllers).
Understanding the Relationship Between Allen Bradley and Rockwell Automation
The relationship between Allen Bradley and Rockwell Automation is one of brand and parent company. Allen Bradley is a brand of industrial automation hardware and software products owned by Rockwell Automation. Think of it like Lexus and Toyota – Allen Bradley is the premium brand under the larger Rockwell Automation umbrella.
Rockwell Automation acquired Allen Bradley in 1985. Since then, Rockwell Automation has continued to develop and market products under the Allen Bradley brand, leveraging its strong reputation and market presence. This acquisition allowed Rockwell to significantly expand its footprint in the burgeoning industrial automation market.
Key Differences: Brand vs. Company
The primary difference lies in their identity: Allen Bradley is a product brand, while Rockwell Automation is the corporation that owns and manufactures the Allen Bradley products.
- Allen Bradley: Represents a specific line of products within the industrial automation sector, including PLCs, HMIs (Human Machine Interfaces), drives, and other automation components.
- Rockwell Automation: Is the overarching company responsible for the design, manufacturing, marketing, and support of Allen Bradley products, as well as other automation solutions.
Think of it this way: you buy an "Allen Bradley PLC," but the company behind it is "Rockwell Automation." The brand signifies quality and a specific set of features, while the company provides the infrastructure and innovation.
Features and Capabilities of Allen Bradley PLCs
Allen Bradley PLCs are known for their robust performance, reliability, and extensive feature sets. Here are some key features and capabilities:
- Scalability: Allen Bradley PLCs offer a range of options, from small micro PLCs to large, high-performance controllers, catering to diverse application needs.
- Communication Protocols: They support various industrial communication protocols, including Ethernet/IP, ControlNet, DeviceNet, and Modbus TCP/IP, ensuring seamless integration with other devices and systems.
- Programming Flexibility: Allen Bradley PLCs are typically programmed using ladder logic, function block diagrams, structured text, and sequential function charts, providing flexibility for different programming styles and application requirements.
- Advanced Control Functions: They offer advanced control functions such as PID control, motion control, and safety control, enabling complex automation solutions.
- Diagnostics and Troubleshooting: Allen Bradley PLCs provide comprehensive diagnostic capabilities, facilitating easy troubleshooting and maintenance.
To illustrate the scalability, consider this:
Rockwell Automation's Broader Offerings
Rockwell Automation offers a comprehensive suite of industrial automation solutions that extend beyond Allen Bradley PLCs. These include:
- Software: Rockwell Automation provides software platforms like Studio 5000 for PLC programming, FactoryTalk for HMI and MES (Manufacturing Execution System) applications, and RSLinx for communication and configuration.
- Drives and Motion Control: They offer a wide range of drives and motion control products, including AC drives, DC drives, servo drives, and motion controllers.
- Industrial Control Components: Rockwell Automation provides various industrial control components such as pushbuttons, sensors, relays, and circuit breakers.
- Safety Solutions: They offer safety PLCs, safety relays, safety light curtains, and other safety components to ensure safe operation of industrial equipment.
- Services and Support: Rockwell Automation provides a range of services and support, including training, consulting, engineering services, and technical support.
The integration between these offerings is a key strength. For example, using Studio 5000 to program an Allen Bradley PLC and then connecting it to a FactoryTalk HMI creates a seamless and efficient automation system.
Allen Bradley vs. Rockwell Automation: A Detailed Comparison
| Feature | Allen Bradley | Rockwell Automation |
|---|---|---|
| Type | Product Brand | Company |
| Focus | Specific product lines (PLCs, HMIs, Drives) | Overall automation solutions and services |
| Ownership | Owned by Rockwell Automation | Owns the Allen Bradley Brand |
| Innovation | Product-level innovations within the brand | Drives overall technological advancements and strategic direction |
| Support | Product-specific support resources | Comprehensive services, support, and training |
Performance Metrics Analysis
Understanding performance metrics is crucial for optimizing your PLC systems. Key metrics include scan time, memory usage, and communication speed. Allen Bradley PLCs, backed by Rockwell Automation's engineering, are designed for optimized performance in these areas.
Frequently Asked Questions
Q: Are Allen Bradley and Rockwell Automation the same company?
A: No, Allen Bradley is a brand of industrial automation products owned by Rockwell Automation.
Q: What are some common Allen Bradley PLC series?
A: Common series include Micro800, CompactLogix, and ControlLogix, each designed for different application scales and complexity.
Q: What software is used to program Allen Bradley PLCs?
A: Studio 5000 Logix Designer is the primary software used for programming Allen Bradley PLCs.
Q: Where can I purchase Allen Bradley products?
A: Allen Bradley products are available through authorized Rockwell Automation distributors and resellers.
Q: How do I get technical support for Allen Bradley products?
A: Technical support is provided by Rockwell Automation through their website, knowledge base, and support channels.
Q: What are the benefits of using Allen Bradley PLCs?
A: Benefits include reliability, scalability, comprehensive features, and integration with other Rockwell Automation products.
Q: Are Allen Bradley PLCs suitable for small businesses?
A: Yes, the Micro800 series is specifically designed for smaller applications and budgets, making Allen Bradley PLCs accessible to small businesses.
Conclusion
Understanding the distinction between Allen Bradley and Rockwell Automation is essential for anyone involved in industrial automation. Allen Bradley represents a line of high-quality, reliable products, while Rockwell Automation is the driving force behind the innovation, support, and overall strategy. By choosing Allen Bradley PLCs, you are investing in a solution backed by a global leader in industrial automation.
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