Petro Auto Tech Expands Inventory with 1746-OA8 Module
Petro Auto Tech, a trusted industrial automation parts supplier, now stocks the Allen-Bradley 1746-OA8 discrete AC output module. This addition strengthens the company's commitment to providing reliable components for legacy and current SLC 500 systems.
The 1746-OA8 is designed for general-purpose applications where discrete AC output control is required. Engineers and maintenance teams can rely on this module to deliver consistent performance in demanding industrial environments.
Overview of the 1746-OA8 Discrete AC Output Module
Part of the Allen-Bradley SLC 500 family, the 1746-OA8 provides eight output channels organized into two groups of four channels each. It operates with a nominal output voltage of 120/240 VAC and an output voltage range of 85-264 VAC, with a frequency range of 47-63 Hz.
The module draws a backplane current of 185 mA at 5 VDC. Its on-state voltage drop is a maximum of 1.5 V at 1.0 A, and it can handle a surge current per point of 10 A for 25 ms.
Technical Specifications and Performance Analysis
Key specifications include a continuous current per point of 1.00 A at 30 °C (86 °F) and 0.5 A at 60 °C (140 °F). The continuous current per module is 8.0 A at 30 °C and 4.0 A at 60 °C.
Signal response times are critical for precise control. The maximum ON signal delay for a resistive load is 1 ms, while the maximum OFF signal delay is 11 ms. The step response is 60 milliseconds in and 2.5 milliseconds out.
Application Scenarios and Use Cases
The 1746-OA8 is suitable for controlling AC loads such as motor starters, solenoids, and indicator lights in manufacturing and process control systems. Its two-group configuration allows for flexible wiring and isolation of different load types.
In a typical factory automation setup, the module can manage eight discrete outputs from a single SLC 500 chassis, reducing the need for multiple modules. This simplifies system design and lowers overall component costs.
Customer Case Scenario: Improving Production Line Control
Consider a packaging line that requires eight AC-powered actuators to operate in sequence. By integrating the 1746-OA8 into an existing SLC 500 system, a plant engineer can replace older relay-based controls with a single module, reducing wiring complexity and improving response time.
This hypothetical upgrade illustrates how the 1746-OA8 can streamline maintenance and enhance reliability in real-world applications.
Compatibility and Integration with SLC 500 Systems
The 1746-OA8 is designed specifically for the Allen-Bradley SLC 500 programmable logic controller platform. It fits into any standard SLC 500 chassis and communicates via the backplane.
No additional communication protocols are required for basic operation, as the module is directly addressed by the SLC 500 processor. This ensures seamless integration into existing control architectures.
Comparison with Similar Output Modules
When compared to other discrete output modules in the SLC 500 family, the 1746-OA8 offers a unique combination of AC voltage range and channel count. For example, while some modules provide DC outputs, the 1746-OA8 is optimized for AC loads, making it ideal for applications like motor control and lighting.
Its two-group isolation provides additional flexibility for wiring separate power sources or load types, a feature not always available in lower-channel-count modules.
Company Strength and Supply Assurance from Petro Auto Tech
Petro Auto Tech specializes in sourcing and supplying industrial automation components from leading brands like Allen-Bradley. With a focus on quality and availability, the company ensures that customers receive genuine parts for their critical systems.
For the 1746-OA8, Petro Auto Tech offers competitive pricing and fast shipping. Customers can rely on their expertise to find the right solution for their automation needs.
Frequently Asked Questions About the 1746-OA8
What is the output voltage range of the 1746-OA8? The module has an output voltage range of 85-264 VAC and a nominal output voltage of 120/240 VAC, with a frequency range of 47-63 Hz.
How many output channels does the 1746-OA8 have? It has eight output channels arranged in two groups of four channels each, allowing for flexible wiring and isolation.
What is the backplane current consumption of the 1746-OA8? The module consumes 185 mA at 5 VDC from the SLC 500 backplane.
Can the 1746-OA8 handle surge currents? Yes, it can handle a surge current per point of 10 A for 25 ms, providing robust protection for connected loads.
What is the continuous current rating per point at different temperatures? At 30 °C (86 °F), the continuous current per point is 1.00 A, and at 60 °C (140 °F), it is 0.5 A.
Conclusion and Future Outlook
The Allen-Bradley 1746-OA8 remains a reliable choice for discrete AC output control in SLC 500 systems. Petro Auto Tech's availability of this module ensures that industrial facilities can maintain and upgrade their automation infrastructure with confidence.
As industries continue to rely on proven technology, the 1746-OA8 will support efficient operations for years to come.
