Siemens S7-200 SMART 6ES7288-1SR20-0AA1 Digital Output Module 8-way Relay Output

The Siemens S7-200 SMART 6ES7288-1SR20-0AA1 is a robust digital output module designed for demanding industrial automation tasks. This relay output module offers a reliable solution for controlling various electrical loads, integrating seamlessly into Siemens' SIMATIC S7-200 SMART family of PLCs. It provides eight high-capacity relay outputs, capable of handling significant current loads, making it suitable for a wide range of applications where reliable switching is paramount.

The core advantage of the 6ES7288-1SR20-0AA1 lies in its inherent Siemens quality and its design for cost-effective automation solutions in developing markets. It offers an excellent performance-to-price ratio, especially when combined with other SMART drive products from Siemens, creating efficient and economical automation systems. Its compact design, DIN rail mounting capability, and straightforward programming interface contribute to its ease of integration and operational efficiency.

Product Specifications

| Feature                 | Specification                                                                         |

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

| Product Name            | SIMATIC S7-200 SMART CPU SR20                                                         |

| Model Number            | 6ES7288-1SR20-0AA1                                                                    |

| Brand                   | Siemens                                                                               |

| Power Supply            | 220V AC (AC 85-264V AC at 47-63 Hz, 77 to 138 V DC)                                    |

| Digital Inputs          | 12 (24 V DC)                                                                          |

| Digital Outputs         | 8 (Relay Outputs, 2A per channel)                                                     |

| Program/Data Memory     | 20 KB                                                                                 |

| Ethernet Interface      | Integrated PROFINET                                                                   |

| Additional Interfaces   | May support RS485/RS232 via optional communication signal boards                      |

| Processor               | Capable of handling real-time control tasks                                           |

| High-Speed Counters     | Included                                                                              |

| Pulse Outputs (PTO/PWM) | Included                                                                              |

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

| Mounting Type           | Standard DIN rail                                                                     |

| Net Weight              | 0.370 Kg                                                                              |

| Dimensions (W x H x D)  | 90 x 100 x 81 mm                                                                      |

| Programming Software    | STEP 7-Micro/WIN SMART                                                                |

| Protection Rating       | IP20                                                                                  |

Core Features & Market Positioning

The Siemens S7-200 SMART CPU SR20 6ES7288-1SR20-0AA1 distinguishes itself through its integrated PROFINET interface, facilitating straightforward communication and data exchange within industrial networks. This feature is crucial for modern IIoT and Industry 4.0 initiatives, enabling seamless connectivity with other devices and systems. The module's onboard I/O capabilities, comprising 12 digital inputs and 8 relay outputs, provide substantial control capabilities within a compact form factor, reducing the need for additional expansion modules in many applications. Its market positioning leverages Siemens' reputation for reliability and industrial robustness, offering a cost-effective yet high-performance solution for small to medium-sized automation projects, particularly in markets with price sensitivity. The inclusion of features like high-speed counters and pulse outputs further enhances its value proposition for applications requiring precise control.

Key Application Scenarios

The Siemens 6ES7288-1SR20-0AA1 finds extensive use in various automation scenarios due to its versatility and reliability. It is commonly deployed in the control of machinery within the packaging industry, operating robots, and managing handling equipment. Its robust relay outputs make it ideal for controlling motors, pumps, compressors, and generators where robust switching capabilities are essential. Furthermore, its application extends to building automation systems and general manufacturing process control, where its compact size and integrated communication features streamline system design and implementation.

Practical System Integration Guidance

Integrating the Siemens 6ES7288-1SR20-0AA1 into an existing system is streamlined through its standard DIN rail mounting and straightforward wiring practices. The module is programmed using Siemens STEP 7-Micro/WIN SMART software, which supports both graphical and textual programming methods, simplifying the development and debugging of PLC logic. The integrated PROFINET port simplifies network integration, allowing for direct connection to Ethernet-based industrial networks. For wiring, ensure proper adherence to the voltage and current ratings of the relay outputs to prevent damage. Connecting the 220V AC power supply should be done with caution, following all safety protocols.

Operation and Risk Mitigation

Operating the Siemens 6ES7288-1SR20-0AA1 requires adherence to industrial safety standards. The module's IP20 protection rating indicates it is protected against solid objects larger than 12.5mm but is not rated for water ingress, necessitating installation in protected enclosures. The operating temperature range of -20 to +60 °C allows for deployment in many typical industrial environments. For troubleshooting, common issues might involve incorrect wiring or programming logic errors. Referencing the STEP 7-Micro/WIN SMART software's diagnostic tools and error codes is critical for efficient problem resolution. Always ensure that power is disconnected before performing any maintenance or wiring changes.

Scalability & Long-Term Value

The S7-200 SMART series, including the 6ES7288-1SR20-0AA1, is designed with scalability in mind. It supports the addition of various expansion modules, such as digital and analog I/O, and communication modules, allowing systems to grow with evolving operational demands. The integrated PROFINET interface ensures compatibility with modern industrial communication standards, positioning it favorably for integration into IIoT architectures and digital manufacturing solutions. This inherent expandability and compatibility with current and future Siemens automation platforms provide significant long-term value for businesses looking to invest in robust and adaptable control systems.

Frequently Asked Questions (FAQs)

Q1: What is the primary function of the Siemens 6ES7288-1SR20-0AA1?

The Siemens 6ES7288-1SR20-0AA1 is a CPU module for the SIMATIC S7-200 SMART series. It functions as the central processing unit, executing logic programs and managing input/output operations.

Its design incorporates onboard digital inputs and relay outputs, enabling direct control of various industrial processes and machinery. The module is engineered for reliability and cost-effectiveness in automation solutions.

This CPU module facilitates communication over PROFINET, allowing seamless integration into networked industrial environments and supporting modern automation architectures.

Q2: What are the key technical specifications of the 6ES7288-1SR20-0AA1?

This model features 12 digital inputs and 8 relay digital outputs, each rated for 2A. It operates on a 220V AC power supply and has 20 KB of program/data memory.

The CPU includes an integrated PROFINET interface for efficient networking and supports high-speed counters and pulse outputs for advanced control functions. Its operating temperature ranges from -20 to +60°C and it mounts on a standard DIN rail.

The module dimensions are 90 x 100 x 81 mm, with a net weight of 0.370 kg, making it a compact solution for control cabinets.

Q3: What type of applications is the Siemens 6ES7288-1SR20-0AA1 best suited for?

This PLC is ideal for small to medium-sized automation tasks in industries like packaging, material handling, and general manufacturing. Its robust relay outputs are well-suited for controlling motors, pumps, and other electrical loads.

The module's cost-effectiveness and performance make it a strong choice for developing markets and price-sensitive automation projects. Its integrated features reduce the need for extensive external components.

It can be applied in robotics, compressor control, generator management, and building automation, offering a reliable and versatile solution for diverse industrial control needs.

Q4: How is the Siemens 6ES7288-1SR20-0AA1 programmed?

Programming is performed using Siemens' dedicated STEP 7-Micro/WIN SMART software. This software supports both graphical (Ladder Logic, Function Block Diagram) and textual programming languages.

The software provides a user-friendly interface with features like wizards for quick setup of complex functions, debugging tools, and status monitoring. This simplifies the development and maintenance of PLC programs.

Users can also leverage features like parameter cloning via an SD card for efficient program deployment across multiple units. The software facilitates easy program updates and diagnostics.

Q5: Can the 6ES7288-1SR20-0AA1 be expanded with additional I/O modules?

Yes, the 6ES7288-1SR20-0AA1 is a standard CPU within the S7-200 SMART series, which supports expansion modules. It can be fitted with additional digital and analog I/O modules.

It also supports signal boards, allowing for further customization of communication interfaces or additional I/O. This modularity allows systems to scale as requirements grow.

This expandability ensures that the PLC can adapt to increasingly complex automation needs, providing a long-term solution for evolving industrial processes.

Q6: What are the communication capabilities of this module?

The 6ES7288-1SR20-0AA1 features an integrated PROFINET interface for seamless Ethernet-based communication. This allows it to connect with other PLCs, HMIs, and industrial network components.

It also supports communication via RS485 and potentially RS232 through optional communication signal boards. This enables interaction with third-party devices like inverters and older control systems.

Protocols such as Modbus RTU and PPI are supported, offering flexibility in integrating with a wide range of industrial equipment and supervisory systems.

Q7: What is the power supply requirement for the Siemens 6ES7288-1SR20-0AA1?

The primary power supply for this module is 220V AC. However, it also accepts a DC input range of 77 to 138 V DC.

The AC power supply range is quite broad, from 85V AC to 264V AC at frequencies between 47 Hz and 63 Hz. This wide range ensures adaptability to different power grids.

It is crucial to connect the correct voltage to avoid damaging the module. Always refer to the user manual for precise wiring instructions.

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

The Siemens 6ES7288-1SR20-0AA1 is designed to operate reliably within an industrial temperature range of -20°C to +60°C. This wide range allows for deployment in various environmental conditions.

This specification is critical for ensuring consistent performance and longevity in demanding factory floors, control cabinets, or other industrial settings.

Users should ensure the module is installed within this specified temperature range to prevent overheating or performance degradation.

Q9: What are the dimensions and mounting type of the 6ES7288-1SR20-0AA1?

The module has compact dimensions of 90mm (width) x 100mm (height) x 81mm (depth). Its net weight is approximately 0.370 kg.

It is designed for standard DIN rail mounting, which is a common and efficient method for installing components within industrial control cabinets. This ensures easy and secure installation.

The compact size and DIN rail mounting facilitate space-saving solutions in control panel design and integration.

Q10: Where can I find more detailed documentation or support for the Siemens 6ES7288-1SR20-0AA1?

Detailed technical documentation, including datasheets and user manuals, can typically be found on the official Siemens Industry Mall or SiePortal websites. Search using the model number 6ES7288-1SR20-0AA1.

Siemens also provides extensive online support resources, including FAQs, application notes, and software downloads for the STEP 7-Micro/WIN SMART programming environment.

For specific technical assistance, contacting Siemens support or a certified Siemens automation partner is recommended for expert guidance.