Delta AS218PX-A High-density 18-point Sourcing Input Module

The Delta AS218PX-A is a high-density, 18-point sourcing input module designed for robust industrial automation. This module is engineered by Delta Electronics, a recognized leader in power and thermal management solutions, to deliver exceptional performance, reliability, and versatility. Its core advantages lie in its high-performance processing capabilities, extensive I/O options, and robust communication protocols. With a powerful 32-bit SoC CPU, the AS218PX-A ensures swift and precise execution of complex control algorithms, making it ideal for demanding applications. The module features an integrated 18-point I/O configuration, comprising 8 digital inputs (DI), 6 digital outputs (DO), 2 analog inputs (AI), and 2 analog outputs (AO). This comprehensive I/O set, combined with a program capacity of 64K steps, allows for sophisticated automation tasks and precise data acquisition. Technical parameters include a 24 VDC power supply and compatibility with various communication protocols such as Modbus, Modbus TCP, EtherNet/IP, and CANopen. Its compact dimensions and DIN-rail mounting capability simplify installation in various industrial environments.

Product Specifications

| Feature                     | Specification                                                                                                                                     |

| :-------------------------- | :------------------------------------------------------------------------------------------------------------------------------------------------ |

| Product Number              | AS218PX-A                                                                                                                                         |

| Series                      | AS Series (AS200 CPU)                                                                                                                             |

| Digital Inputs (DI)         | 8 (PNP Sourcing)                                                                                                                                  |

| Digital Outputs (DO)        | 6 (Transistor PNP)                                                                                                                                |

| Analog Inputs (AI)          | 2                                                                                                                                                 |

| Analog Outputs (AO)         | 2                                                                                                                                                 |

| Total I/O                   | 18 points                                                                                                                                         |

| Program Capacity            | 64K steps                                                                                                                                         |

| Data Memory                 | 64K words                                                                                                                                         |

| CPU Type                    | 32-bit SoC CPU                                                                                                                                    |

| Execution Speed (Basic Inst)| 25 ns (approx.); 40K steps/ms                                                                                                             |

| Communication Ports         | 1x Ethernet, 2x RS-485, 1x USB, 1x Micro SD, CANopen                                                                                |

| Communication Protocols     | Modbus, Modbus TCP, EtherNet/IP, CANopen                                                                                                   |

| Power Supply                | 24 VDC                                                                                                                                     |

| Max. Extension Modules      | 32 modules                                                                                                                                        |

| Max. Input/Output (Total)   | 1024 points                                                                                                                                       |

| Operating Temperature       | -20°C to +60°C                                                                                                                                |

| Dimensions (H x D)          | 88 mm x 95.5 mm (approx. H x D)                                                                                                               |

| Mounting                    | DIN Rail                                                                                                                                          |

Core Features & Market Positioning

The Delta AS218PX-A distinguishes itself in the industrial automation market through its high-performance processing and extensive connectivity options. Its self-developed 32-bit SoC CPU provides enhanced execution speed, enabling rapid processing of complex control logic and contributing to overall operational efficiency. This makes it a competitive choice for applications demanding quick response times and precise control. The module's robust communication capabilities, including built-in Ethernet, RS-485, USB, and CANopen interfaces, facilitate seamless integration with a wide array of industrial devices and higher-level systems, such as SCADA and IIoT platforms. Compared to other PLCs, the AS218PX-A offers a balance of advanced features and cost-effectiveness, positioning it as a valuable solution for mid-range automation projects. Its rackless, modular design further enhances its market appeal by offering flexibility and scalability without the need for complex backplane structures. The module's ability to support up to 32 extension modules allows for system expansion to a total of 1024 I/O points, catering to growing application requirements.

Key Application Scenarios

The Delta AS218PX-A PLC is exceptionally versatile and finds application across numerous industrial sectors. Its high-density I/O and processing power make it suitable for intricate control tasks in manufacturing environments, including automated assembly lines, packaging machinery, and material handling systems. In the automotive industry, it can be employed for precise robotic control, quality inspection systems, and powertrain testing. The energy sector benefits from its reliability in control applications for power generation and distribution. Furthermore, its advanced capabilities are well-suited for the pharmaceutical and food & beverage industries, where stringent control, data logging, and compliance are paramount. Common user search needs related to this product often revolve around precise control, data acquisition, and seamless integration, all of which the AS218PX-A addresses effectively. Examples include controlling intricate motion sequences, monitoring sensor inputs for process optimization, and facilitating communication between disparate industrial equipment.

Practical System Integration Guidance

Integrating the Delta AS218PX-A into an industrial control system is streamlined due to its user-friendly design and comprehensive communication options. Installation typically involves DIN rail mounting, with patented clip-type terminals for secure and efficient wiring. The module supports various programming languages, including Ladder Diagram (LD), Structured Text (ST), Continuous Function Chart (CFC), and Sequential Function Chart (SFC), via Delta's DIA Studio software suite. For system communication, the Ethernet port can be configured for protocols like EtherNet/IP, Modbus TCP, or Modbus RTU/ASCII via RS-485. When connecting sensors and actuators, users must adhere to the specified voltage and current ratings for the digital and analog I/O points. The PNP sourcing output configuration requires careful consideration during wiring to ensure correct signal flow. Detailed wiring diagrams and configuration examples can be found in the AS Series Hardware Manual and the AS218PX-A Instruction Sheet. For advanced integration, such as with SCADA systems, understanding EtherNet/IP communication parameters, including CIP classes and attributes, is crucial.

Operation and Risk Mitigation

Operating the Delta AS218PX-A requires adherence to standard industrial automation safety protocols. As an "open-type" module, it must be installed within an enclosure that protects it from dust, humidity, electrical shock, and vibration. Access to the enclosure should be restricted to trained maintenance personnel to prevent accidental damage or operational hazards. The module operates on a 24 VDC power supply, and proper grounding is essential for system stability and safety. When troubleshooting, common issues may relate to I/O configuration, communication setup, or program logic errors. For instance, if a digital input is not registering, verifying the PNP sourcing configuration and checking the wiring for shorts or breaks is recommended. Similarly, communication problems might stem from incorrect IP address settings or protocol mismatches. Consulting the AS218PX-A programming manual and hardware manual is vital for detailed troubleshooting guidance, including understanding error codes and diagnostic indicators.

Scalability & Long-Term Value

The Delta AS218PX-A offers significant long-term value through its inherent scalability and compatibility with broader industrial trends. Its modular design allows for the addition of up to 32 extension modules, enabling the system to grow from its base 18 I/O points to a maximum of 1024 I/O points. This expandability ensures that the automation system can adapt to evolving production demands and technological advancements without requiring a complete hardware overhaul. Furthermore, the AS218PX-A is designed to integrate seamlessly with Delta's other automation products, such as servo drives and HMIs, creating a cohesive control ecosystem. The module's support for communication protocols like EtherNet/IP and CANopen also positions it favorably for integration into Industrial Internet of Things (IIoT) architectures, enabling remote monitoring, data analytics, and cloud connectivity for predictive maintenance and operational optimization. This forward-looking design ensures sustained relevance and value in increasingly connected industrial environments.

Frequently Asked Questions (FAQs)

Q1: What are the primary advantages of the Delta AS218PX-A module?

The AS218PX-A offers high-density I/O, combining 8 digital inputs, 6 digital outputs, 2 analog inputs, and 2 analog outputs in a compact unit. Its advanced 32-bit SoC CPU ensures fast processing speeds for complex automation tasks.

It supports robust communication protocols like Ethernet, EtherNet/IP, Modbus TCP, and CANopen, facilitating easy integration with other devices and systems. The modular design allows for significant scalability, supporting up to 32 extension modules for a total of 1024 I/O points.

This combination of high performance, extensive connectivity, and scalability makes the AS218PX-A a versatile and cost-effective solution for a wide range of industrial automation applications.

Q2: What is the I/O configuration of the Delta AS218PX-A?

The Delta AS218PX-A features a high-density configuration with a total of 18 integrated I/O points. This includes 8 digital inputs (DI) and 6 digital outputs (DO).

Additionally, it is equipped with 2 analog inputs (AI) for sensing continuous variables and 2 analog outputs (AO) for controlling analog devices. The digital outputs are transistor PNP sourcing type.

This comprehensive I/O set allows for sophisticated control and monitoring within a single module, minimizing the need for additional expansion modules for basic applications.

Q3: What communication protocols does the AS218PX-A support?

The AS218PX-A supports a range of essential industrial communication protocols. It features built-in Ethernet for network connectivity.

Key protocols include Modbus, Modbus TCP, EtherNet/IP, and CANopen, enabling versatile data exchange with PLCs, HMIs, SCADA systems, and other industrial devices.

This broad protocol support ensures seamless integration into existing automation architectures and facilitates communication across different vendor equipment.

Q4: How can the AS218PX-A be integrated into an existing system?

Integration is facilitated by its standard DIN rail mounting and plug-in, screwless terminal blocks for simplified wiring. The module supports common programming languages like Ladder Diagram (LD) and Structured Text (ST) via Delta's DIA Studio software.

Configuration for Ethernet typically involves setting IP addresses and selecting the desired protocol (e.g., EtherNet/IP). For RS-485, Modbus RTU/ASCII configurations are common.

Careful adherence to wiring diagrams in the hardware manual and understanding of communication parameters are essential for successful integration.

Q5: What are the power requirements for the Delta AS218PX-A?

The AS218PX-A operates on a standard 24 VDC power supply. This is a common voltage level in industrial control systems, simplifying power distribution.

Proper grounding of the unit is crucial for stable operation and electrical safety. It's recommended to use a regulated and filtered DC power source to ensure optimal performance.

Ensure that the power supply capacity is sufficient for the PLC and any connected modules or peripherals to avoid voltage drops or operational instability.

Q6: Can the AS218PX-A be expanded to accommodate more I/O points?

Yes, the Delta AS218PX-A is part of a modular system designed for scalability. It supports the addition of up to 32 extension modules.

This expandability allows the system's I/O capacity to grow significantly, from its base 18 points to a maximum of 1024 I/O points. This feature is vital for applications that may evolve or require increased complexity over time.

The ability to scale the I/O configuration ensures a longer lifespan for the automation investment and flexibility in system design.

Q7: What programming software is used for the AS218PX-A?

The Delta AS218PX-A is programmed using Delta's integrated software suite, typically DIA Studio, which includes DIA Designer. This software provides a comprehensive environment for configuration, programming, and diagnostics.

DIA Designer supports multiple programming languages, including Ladder Diagram (LD), Structured Text (ST), Continuous Function Chart (CFC), and Sequential Function Chart (SFC). This flexibility allows engineers to choose the most suitable language for their application.

The software also offers features like hardware configuration, network setup, and built-in function blocks, streamlining the development process.

Q8: What is the typical operating temperature range for this module?

The Delta AS218PX-A is designed for industrial environments and has an operating temperature range of -20°C to +60°C. This wide range makes it suitable for many challenging operational settings.

Ensuring adequate ventilation within the enclosure where the module is installed is important to maintain performance within this temperature range. Extreme temperatures outside this range can affect reliability and lifespan.

Always refer to the product datasheet for precise operating conditions and environmental considerations to ensure optimal performance and longevity.

Q9: How does the AS218PX-A handle high-speed counting or pulse outputs?

While the AS218PX-A is a CPU module with integrated I/O, Delta's AS series also offers dedicated modules for enhanced high-speed counting (HSC) and pulse train output (PTO). The AS218PX-A itself supports HSC up to 200kHz for 3 axes and 6 axes for PTO.

For more advanced high-speed applications, additional specialized modules can be integrated into the AS Series rackless system, expanding these capabilities.

This allows for precise motion control and high-frequency data acquisition in demanding applications such as servo motor control and complex positioning tasks.

Q10: Is the Delta AS218PX-A suitable for IIoT applications?

Yes, the Delta AS218PX-A is well-suited for IIoT applications due to its built-in communication capabilities. Protocols like EtherNet/IP and CANopen are standard for industrial networking and data exchange.

The module can be integrated with IIoT platforms via Ethernet. This allows for remote data access, connectivity to SCADA systems using protocols like OPC-UA, and cloud connectivity via MQTT.

Its support for industrial networks and data integration ensures it can be a key component in building smart, connected industrial systems for enhanced efficiency and data-driven decision-making.