Siemens LOGO! 6ED Series – Compact Smart Controller for Small Automation Tasks
When it comes to small-scale automation, not every project requires a full-sized PLC. The Siemens LOGO! 6ED series offers a compact, cost-effective, and easy-to-program solution designed for simple control applications in buildings, machinery, and energy systems.
Often referred to as a smart relay or mini PLC, the Siemens LOGO! controller bridges the gap between traditional relays and advanced PLC systems. It is ideal for users who need reliable automation without the complexity and cost of larger controllers.
What Is Siemens LOGO! 6ED Series?
The LOGO! family is Siemens’ entry-level logic module range, and most part numbers begin with 6ED, which identifies the product as part of the LOGO! series.
These controllers are widely used in:
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Small machines
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Building automation
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Utility control systems
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Energy management applications
They are especially suitable for projects that require compact design, simple programming, and dependable performance.
Key Features of Siemens LOGO! 6ED Controllers
Compact Design for Space-Limited Installations
LOGO! modules are designed to fit into small control panels where space is limited. Their compact housing makes them perfect for decentralized automation tasks.
Built-in Display and Keypad
Many LOGO! models include an integrated display and control keys, allowing users to monitor system status and perform basic programming directly on the device.
Ethernet Communication (on selected models)
Newer LOGO! 6ED versions support Ethernet connectivity, enabling remote monitoring, data exchange, and integration into larger automation networks.
LOGO! Soft Comfort Programming
Siemens provides LOGO! Soft Comfort, an intuitive software tool that uses function block diagrams and drag-and-drop programming. This makes the system highly accessible, even for beginners.
Expandable I/O Modules
LOGO! controllers can be expanded with additional digital and analog input/output modules, increasing system flexibility without moving to a full PLC platform.
| Article number Based on |
6AG1052-2CC08-7BA0 6ED1052-2CC08-0BA0 SIPLUS LOGO!24CEO |
6AG1052-2MD08-7BA0 6ED1052-2MD08-0BA0 SIPLUS LOGO!12/24RCEO |
6AG1052-2HB08-7BA0 6ED1052-2HB08-0BA0 SIPLUS LOGO!24RCEO (AC) |
6AG1052-2FB08-7BA0 6ED1052-2FB08-0BA0 SIPLUS LOGO!230RCEO |
| Resistance (Industrial systems) |
• Resistant to coolants and lubricants (diesel and oil droplets) • Biological substances: Class 3B2 (mold, fungus), Class 3B3 on request • Chemical substances: Class 3C4 (RH < 75%), incl. salt spray (EN 60068-2-52) • Mechanical substances: Class 3S4 (sand, dust) • Marine use: Classes 6B2 / 6C3 / 6S3 according to EN 60721-3-6 |
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| Plug covers | The supplied plug covers must remain in place over unused interfaces during operation. | |||
| Conformal coating |
Class 2 for high availability Type 1 protection Conformal coating Class A |
Class 2 for high availability Type 1 protection Conformal coating Class A |
Class 2 for high availability Type 1 protection Conformal coating Class A |
Class 2 for high availability Type 1 protection Conformal coating Class A |
Common Applications of Siemens LOGO! Controllers
Because of its flexibility and ease of use, the LOGO! 6ED series is widely applied across many industries.
Typical applications include:
Building Lighting Control
Automatic lighting schedules, motion-activated lighting, and energy-saving control strategies.
Pump and Water Level Control
Water tank monitoring, pump sequencing, and overflow protection.
HVAC Small Systems
Temperature-based fan and ventilation control for small buildings or rooms.
Conveyor and Small Machine Automation
Basic motor control, timers, and interlock logic for small industrial machines.
Agricultural Automation
Irrigation timing, greenhouse ventilation, and environmental monitoring.
Energy and Smart Home Systems
Load management, solar energy control, and smart building solutions.
Understanding the 6ED Model Number Structure
Siemens LOGO! model numbers may look complex, but they provide useful technical information. For example:
6ED1052-1MD08-0BA1
In general:
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6ED → Identifies the product as part of the LOGO! family
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Middle digits → Indicate power supply type and I/O configuration
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Suffix → May specify display version, relay or transistor outputs, and communication features
Understanding these differences helps users choose the correct controller for their voltage, input type, and output requirements.
Product overview for LOGO! 8
Logic Modules
| LOGO!12/24RCE,8DI(4Al)/4DO,400 Blocks | 6ED1052-1MD08-0BA1 |
| LOGO!12/24RCEO,8DI(4AI)/4DO,400 Blocks | 6ED1052-2MD08-0BA1 |
| LOGO!230RCE,8DI/4DO,400 Blocks | 6ED1052-1FB08-0BA1 |
| LOGO!230RCEo,8DI/4DO,400 Blocks | 6ED1052-2FB08-0BA1 |
| LOGO!24RCE,8DI/4DO,400 Blocks | 6ED1052-1HB08-0BA1 |
| LOGO!24RCEO,8DI/4DO,400 Blocks | 6ED1052-2HB08-0BA1 |
| LOGO!24CE,8DI(4AI)/4DO,400 Blocks | 6ED1052-1CC08-0BA1 |
| LOGO!24CEo,8DI(4AL)/4DO,400 Blocks | 6ED1052-2CC08-0BA1 |
| SIPLUS | Compare technical specifications online |
| SIPLUS LOGO!12/24RCE | 6AG1052-1MD08-7BA1 |
| SIPLUS LOGO!12/24RCEO | 6AG1052-2MD08-7BA1 |
| SIPLUS LOGO!230RCE | 6AG1052-1FB08-7BA1 |
| SIPLUS LOGO!230RCEO | 6AG1052-2FB08-7BA1 |
| SIPLUS LOGO!24CE | 6AG1052-1CC08-7BA1 |
| SIPLUS LOGO!24CEO | 6AG1052-2CC08-7BA1 |
| SIPLUS LOGO!24RCE | 6AG1052-1HB08-7BA1 |
| SIPLUS LOGO!24RCEO(AC) 6AG1052-2HB08-7BA1 | |
Digital Expansion Modules
| LOGO!DM824 Exp.mod.,4DI/4DO | 6ED1055-1CB00-0BA2 |
| LOGO!DM1624 Exp.mod.,4 MW,8DI/8DO | 6ED1055-1CB10-0BA2 |
| LOGO!DM8230R Exp.mod.2 MW,4DI/4DO | 6ED1055-1FB00-0BA2 |
| LOGO!DM16230R Exp.mod.4 MW,8DI/8DO | 6ED1055-1FB10-0BA2 |
| LOGO!DM824R Exp.mod.2 MW,4DI/4DO | 6ED1055-1HB00-0BA2 |
| LOGO!DM812/24R Exp.mod.2 MW,4DI/DO | 6ED1055-1MB00-0BA2 |
| LOGO!DM1624R Exp.mod.4 MW,8DI/8DO | 6ED1055-1NB10-0BA2 |
| SIPLUS | Compare technical specifications online |
| SIPLUS LOGO!DM1624R V8 | 6AG1055-1NB10-7BA2 |
| SIPLUS LOGO!DM812/24R V8 | 6AG1055-1MB00-7BA2 |
| SIPLUS LOGO!DM8230R V8 | 6AG1055-1FB00-7BA2 |
| SIPLUS LOGO!DM824R V8 | 6AG1055-1HB00-7BA2 |
| SIPLUS LOGO!DM824 V8 | 6AG1055-1CB00-7BA2 |
Analog Expansion Modules
| LOGO!AM2 Exp.mod.,12/24V,2Al, | 6ED1055-1MA00-0BA2 |
| LOGO!AM2 RDT,2Al,-50..+200DECR/C | 6ED1055-1MD00-0BA2 |
| LOGO!AM2 AQ,2AQ,0-10V,0/4-20mA | 6ED1055-1MM00-0BA2 |
| SIPLUS | Compare technical specifications online |
| SIPLUS LOGO!AM2 AQV8 | 6AG¹055-1MM00-7BA2 |
| SIPLUS LOGO!AM2 RTD | 6AG1055-1MD00-7BA2 |
| SIPLUS LOGO!AM2 V8 | 6AG1055-1MA00-7BA2 |
Power Supply
| LOGO!Power/1AC/12VDC/0.9A | 6EP3320-6SB00-0AYO |
| LOGO!Power/1AC/12VDC/1.9A | 6EP3321-6SB00-0AY0 |
| LOGO!Power/1AC/12VDC/4.5A | 6EP3322-6SB00-0AYO |
| LOGO!Power/1AC/24VDC/0.6A | 6EP3330-6SB00-0AY0 |
| LOGO!Power/1AC/24VDC/1.3A | 6EP3331-6SB00-0AY0 |
| LOGO!Power/1AC/24VDC/2.5A | 6EP3332-6SB00-0AYO |
| LOGO!Power/1AC/24VDC/4A | 6EP3333-6SB00-0AYO |
| LOGO!POWER/1AC/DC24V/4A/EX | 6EP3333-6SC00-0AY0 |
| SIPLUS | Compare technical specifications online |
| SIPLUS LOGO!POWER 24V 1.3A | 6AG1331-6SB00-7AYO |
| SIPLUS LOGO!POWER 24V 4A | 6AG1333-6SB00-7AYO |
LOGO! vs Traditional PLC – What’s the Difference?
| Feature | LOGO! Smart Relay | Standard PLC |
|---|---|---|
| System Size | Very compact | Medium to large |
| Programming Complexity | Simple | Advanced |
| Cost | Budget-friendly | Higher investment |
| Ideal For | Basic control tasks | Complex automation systems |
The LOGO! series is not designed to replace full PLCs. Instead, it serves as an efficient and economical solution for small, independent control tasks.
Why Choose Siemens LOGO! 6ED Controllers?
Siemens LOGO! controllers are known for their reliability, long service life, and strong global support network. They are widely trusted in both industrial and building automation environments.
Key advantages include:
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Proven Siemens quality and engineering
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Easy integration into small and medium control systems
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Simple learning curve for new users
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Flexible expansion options
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Long-term product availability and support
Conclusion
The Siemens LOGO! 6ED series is an ideal solution for compact, economical, and easy-to-program automation tasks. Whether used in building control, machinery, water systems, or energy management, LOGO! provides dependable performance without the complexity of larger PLC platforms.
If you are looking for Siemens LOGO! controllers or expansion modules, working with an experienced supplier ensures you receive the correct model and reliable support for your project.
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