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Description
Application Scenarios
In a mid-sized manufacturing facility, an OEM specializing in industrial air-conditioning systems faced the challenge of managing complex HVAC sequences involving multiple compressors, ventilation dampers, and alarm annunciators. The legacy relay-based control panels were cumbersome to wire, difficult to modify, and offered no remote monitoring capability. By integrating the Siemens 6ED1052-1MD00-0BA7, the OEM was able to program the entire control logic using simple ladder or function block diagrams. The module’s Ethernet interface now allows for remote monitoring of system status and seamless communication with the facility’s higher-level SCADA system, reducing on-site maintenance visits by over 30%.
Similarly, a commercial building automation project utilized the Siemens 6ED1052-1MD00-0BA7 to control external lighting, sun blinds, and rainwater pumps based on a real-time clock and astronomical timers. The built-in display and keypad simplified on-site parameter adjustments by facility staff, while the 480-hour power backup ensured the time and program remained intact during brief power outages.
Parameters
| Main Parameters | Value/Description |
|---|---|
| Product Model | Siemens 6ED1052-1MD00-0BA7 (LOGO! 12/24RCE) |
| Manufacturer | Siemens |
| Product Category | Logic Module / Smart Relay (PLC) |
| Operating Voltage | 12V DC / 24V DC |
| Digital Inputs | 8 (4 configurable as analog inputs: 0-10V) |
| Digital Outputs | 4 x Relay Outputs, 10A (resistive) / 3A (inductive) |
| Memory Capacity | 400 Function Blocks |
| Communication | Integrated Ethernet Interface (RJ45), supports up to 8 networked LOGO! devices |
| Integrated Display | Yes – LCD with menu control and keypad |
| Real-Time Clock | Yes (RTC), 480 hours power backup time |
| Protection Class | IP20 |
| Operating Temperature | 0°C to +55°C |
| Mounting | 35mm DIN rail (6 units wide) or wall mounting |
| Dimensions (W x H x D) | 108mm x 90mm x 55mm |
| Approvals | UL, CSA, FM, VDE, IEC, Shipbuilding authorities |
Technical Principles and Innovative Values
Innovation Point 1 – Enhanced Processing and Expanded Memory: The Siemens 6ED1052-1MD00-0BA7 doubles the programming capacity of its predecessors, offering 400 function blocks. This allows for the implementation of more complex logic, including advanced functions like astronomical clocks, minimum/maximum value tracking, average calculations, analog filtering, and even stopwatch functions—features that were previously only available in full-scale PLCs.
Innovation Point 2 – Integrated Ethernet Connectivity: A key highlight of the 0BA7 generation is the built-in Ethernet interface. The Siemens 6ED1052-1MD00-0BA7 can act as a programming interface and, more critically, for communication with other LOGO! 0BA7 base devices. Up to eight units can be networked, sharing data and statuses, or it can be integrated with SIMATIC S7 CPUs, HMI panels, and PCs, making it a true node in an industrial IoT (IIoT) framework.
Innovation Point 3 – SD Card Data Logging and Support: Unlike many other smart relays, the Siemens 6ED1052-1MD00-0BA7 supports SD cards (up to 8 GB). This enables data logging of operational parameters, alarms, and system events, providing valuable insights for predictive maintenance and performance analysis without needing a dedicated PC or SCADA system.
Innovation Point 4 – Flexible Multi-Voltage Input and Hybrid I/O: The module’s ability to accept both 12V and 24V DC makes it suitable for diverse power supply systems. Furthermore, the 8 digital inputs can be individually configured, with 4 channels capable of reading 0-10V analog signals from sensors. This hybrid approach eliminates the need for a separate analog input module for many applications.
