Siemens 6ED1055-1MB00-0BA2 16DO Multi-channel Digital Output Module

Siemens 6ED1055-1MB00-0BA2 16DO Multi-channel Digital Output Module: Precision Control for Industrial Automation

The Siemens 6ED1055-1MB00-0BA2 is a highly reliable expansion module designed to enhance the capabilities of Siemens LOGO! 8 systems. This module offers 4 digital inputs and 4 digital relay outputs, providing essential I/O expansion for a wide range of automation tasks. Its compact design, robust construction, and straightforward integration make it a valuable component for industrial control applications. The 6ED1055-1MB00-0BA2 boasts key advantages such as easy DIN rail mounting, an IP20 protection rating for safe operation in industrial environments, and compatibility with the versatile LOGO! platform, enabling scalable and efficient automation solutions.

Product Specifications

| Feature                   | Specification                                                                     |

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

| Product Number            | 6ED1055-1MB00-0BA2                                                                |

| Product Series            | SIMATIC LOGO!                                                                     |

| Module Type               | Expansion I/O Module (DM8 12/24R)                                                 |

| Digital Inputs            | 4 x Digital Inputs (DC, 12/24V)                                                   |

| Digital Outputs           | 4 x Relay Outputs (NO contact type, 5A resistive load)                            |

| Supply Voltage            | 12/24 V AC/DC (20.4 Vdc - 28.8 Vdc nominal)                                       |

| Mounting                  | 35 mm DIN rail                                                                    |

| Dimensions (H x W x D)    | 90 mm x 35.5 mm x 58 mm                                                           |

| Protection Rating         | IP20                                                                              |

| Operating Temperature     | 0 °C to +55 °C                                                                    |

| Connection Type           | Screw/spring clamp terminals                                                      |

| Approvals                 | CE, CSA, UL, FM, Marine, IEC61131, VDE0631, EN55011                               |

| Program Capacity (Base)   | Supports LOGO! 8 Base Modules                                                     |

| Max. Digital Inputs (Sys) | Up to 24 with LOGO! 8 base unit                                                   |

| Max. Digital Outputs (Sys)| Up to 20 with LOGO! 8 base unit                                                   |

Core Features & Market Positioning

The Siemens 6ED1055-1MB00-0BA2 stands out in the industrial automation market due to its seamless integration with the Siemens LOGO! ecosystem. This expansion module is engineered for users seeking to extend the input/output (I/O) capacity of their existing LOGO! 8 controllers without a complete system overhaul. Its core strength lies in providing reliable digital input and output capabilities using robust relay contacts, suitable for switching various loads. The module’s market positioning is that of an accessible, cost-effective solution for expanding the functionality of compact automation systems, particularly in small to medium-scale applications where precise control and dependable operation are paramount. Its compatibility across LOGO! 8 and LOGO! 8.2 versions further solidifies its value proposition.

Key Application Scenarios

The Siemens 6ED1055-1MB00-0BA2 finds its optimal use in a variety of industrial and building automation scenarios. It is frequently employed in machine controls for simple tasks like actuating motors, controlling conveyor belts, or managing pneumatic valves. In pump and filter systems, it can manage the on/off cycles of pumps and signal operational status. Transport systems benefit from its ability to control actuators and receive sensor feedback. Furthermore, it's a practical choice for monitoring equipment, such as signaling alarms or controlling indicator lights, and in building management systems for tasks like controlling lighting, HVAC components, or access control.

Practical System Integration Guidance

Integrating the Siemens 6ED1055-1MB00-0BA2 into a LOGO! 8 system is straightforward. The module connects to the base LOGO! unit via a dedicated interface, expanding the available I/O points. For wiring, digital inputs are typically connected to sensors (e.g., switches, proximity sensors) that operate within the 12/24V DC range. The relay outputs, acting as dry contacts, can switch AC or DC loads up to their specified limits (e.g., 5A resistive). When configuring the system using LOGO!Soft Comfort software, the new I/O points provided by the 6ED1055-1MB00-0BA2 module are automatically recognized and can be easily incorporated into the logic diagram. Ensure correct voltage supply connections to avoid damage.

Operation and Risk Mitigation

Safe operation of the Siemens 6ED1055-1MB00-0BA2 is ensured through adherence to its specified operating parameters and proper installation practices. The module has an IP20 rating, meaning it is protected against solid objects larger than 12mm but should be shielded from dust and moisture in harsh environments. Users must be aware of the voltage supply requirements (12/24V DC) and the current limits for the relay outputs (typically 5A resistive load, 3A inductive load). While the module itself does not feature explosion protection certifications (Ex ia, Ex ib), it is suitable for use in general industrial environments. In case of output faults, it's crucial to verify the connected load and wiring for short circuits or overloads. Always disconnect power before performing any wiring or maintenance.

Scalability & Long-Term Value

The Siemens 6ED1055-1MB00-0BA2 offers excellent scalability within the LOGO! 8 platform. A single LOGO! 8 base module can support multiple expansion modules, allowing for a significant increase in digital inputs (up to 24) and digital outputs (up to 20). This modular approach means that systems can be easily scaled up as automation requirements grow, preventing the need for a complete system replacement. Its compatibility with the latest LOGO! software versions ensures long-term usability and integration potential. While direct integration with complex IIoT platforms might require additional gateways or middleware, the inherent programmability and communication capabilities of LOGO! systems provide a foundation for future digital transformations.

Frequently Asked Questions (FAQs)

Q1: What is the primary function of the Siemens 6ED1055-1MB00-0BA2?

The Siemens 6ED1055-1MB00-0BA2 is an expansion module for Siemens LOGO! 8 controllers. Its main purpose is to add more digital input and output capabilities to the base LOGO! unit, enabling control over more devices and sensors.

It provides 4 digital inputs for receiving signals from sensors and switches, and 4 digital relay outputs for controlling actuators like motors, lights, or solenoids. This module significantly enhances the versatility and capacity of a LOGO! 8 automation system, allowing for more complex control logic.

By integrating this module, users can expand their existing LOGO! setup without needing to replace the entire controller, offering a cost-effective solution for increasing I/O count in industrial and building automation applications.

Q2: What voltage levels does the 6ED1055-1MB00-0BA2 support for inputs and outputs?

This expansion module operates with a supply voltage of 12/24V AC/DC. The digital inputs are designed to accept DC signals within this voltage range.

The four digital outputs are relay-based, meaning they function as dry contacts. These outputs can switch both AC and DC loads, provided they stay within the specified current and voltage limits of the relays.

It's crucial to connect the module to the correct power supply (12V or 24V DC) and to ensure the loads connected to the relay outputs do not exceed their 5A resistive or 3A inductive capacity to prevent damage or malfunction.

Q3: Can the 6ED1055-1MB00-0BA2 be used with older Siemens LOGO! versions?

The Siemens 6ED1055-1MB00-0BA2 module is specifically designed for and compatible with the Siemens LOGO! 8 series of base modules. Siemens often ensures backward compatibility for certain components, but for this particular expansion module, direct compatibility is confirmed for LOGO! 8 and LOGO! 8.2.

Using this module with older LOGO! versions (e.g., LOGO! 0BA7 or earlier) is not officially supported and may lead to communication errors or complete non-functionality. Always consult the official Siemens documentation for confirmed compatibility.

For users with older LOGO! systems, alternative expansion modules designed for those specific versions would be necessary to achieve the desired increase in I/O functionality.

Q4: What are the physical dimensions and mounting requirements for this module?

The Siemens 6ED1055-1MB00-0BA2 has compact dimensions of 90mm in height, 35.5mm in width, and 58mm in depth. This compact form factor is ideal for installations where space is limited.

It is designed for easy mounting onto a standard 35mm DIN rail, a common standard in industrial control cabinets. The module occupies two standard "spacing units" (TE) on the rail.

The straightforward DIN rail mounting system simplifies installation and allows for quick replacement or expansion of control systems, contributing to efficient panel building and maintenance.

Q5: What is the switching capacity of the relay outputs on the 6ED1055-1MB00-0BA2?

The relay outputs on the 6ED1055-1MB00-0BA2 are rated for a maximum switching capacity of 5A for resistive loads. This is suitable for many common loads such as incandescent lamps or simple resistive heating elements.

For inductive loads, such as motors or solenoids, the maximum switching capacity is reduced to 3A. It is important to adhere to this limit to ensure the longevity and reliability of the relay contacts.

The module also specifies a switching frequency; for resistive loads, it can handle up to 2 Hz, while for inductive loads, it is limited to 0.5 Hz, and mechanically up to 10 Hz.

Q6: Does this module offer any protection against short circuits or overloads?

The Siemens 6ED1055-1MB00-0BA2 does not feature built-in short-circuit protection for its digital outputs. Users are responsible for implementing external protection measures if the connected load presents a risk of short circuits or overloads.

Overload protection is also not integrated. Exceeding the specified 5A resistive or 3A inductive load limits can damage the relay contacts and potentially the module itself.

Therefore, it is essential to correctly size any external protective devices, such as fuses or circuit breakers, and ensure the total connected load remains within the module's operational limits.

Q7: What is the ingress protection (IP) rating of this module?

The Siemens 6ED1055-1MB00-0BA2 has an IP20 ingress protection rating. This rating signifies that the module is protected against solid objects larger than 12mm, offering basic protection against accidental contact with live parts.

However, an IP20 rating means the module is not protected against water or dust ingress. It is therefore best suited for clean, dry industrial environments or control cabinets.

For applications in environments with higher levels of dust, moisture, or corrosive elements, additional protective measures or enclosures would be necessary to ensure the module's operational integrity and longevity.

Q8: How does the 6ED1055-1MB00-0BA2 expand the capabilities of a LOGO! 8 system?

The LOGO! 8 base module has a finite number of I/O points. The 6ED1055-1MB00-0BA2 expansion module significantly increases this count by adding 4 digital inputs and 4 digital relay outputs to the system.

This allows for the control and monitoring of more external devices, such as sensors, switches, actuators, and indicator lights, enabling more complex automation sequences and logic.

A single LOGO! 8 base unit can support multiple expansion modules, allowing the system's I/O capacity to be scaled up considerably, for instance, to a maximum of 24 digital inputs and 20 digital outputs.

Q9: Can this module be used in safety-critical applications?

No, the Siemens 6ED1055-1MB00-0BA2 is not designed for use in safety-critical applications. The product specifications indicate that it is not suitable for safety functions, and it does not carry specific safety certifications like SIL (Safety Integrity Level).

Safety-related functions in industrial automation require specialized hardware and software that meet stringent safety standards. Using this general-purpose I/O module for such applications would pose a significant risk.

For safety-related tasks, Siemens offers a dedicated range of safety PLCs and safety I/O modules that are specifically engineered and certified to meet the demanding requirements of safety-critical systems.

Q10: What kind of documentation is available for the 6ED1055-1MB00-0BA2?

Siemens provides comprehensive documentation for the 6ED1055-1MB00-0BA2, including technical datasheets, user manuals, and operating instructions. These resources detail the module's specifications, wiring diagrams, installation procedures, and operational guidelines.

System manuals for the LOGO! 8 platform, such as the LOGO! System Manual, often cover the functionalities and integration of various expansion modules, including this one. Software tools like LOGO!Soft Comfort also have integrated help and documentation.

Users can typically find these documents on the official Siemens Industry Online Support (SIOS) portal or through authorized distributors, ensuring they have access to the latest and most accurate technical information.