Siemens 6ED1052-1MD08-0BA2 LOGO! Logic Module 12/24V DC 8DI/4DO Relay

The Siemens 6ED1052-1MD08-0BA2 is a LOGO! logic module with integrated display, designed for small-scale automation and time-based switching tasks. It accepts 12/24V DC supply (permissible range 10.8-28.8V DC) and provides 8 digital inputs - 4 of which operate as analog inputs (0-10V) - paired with 4 relay outputs rated up to 10A on resistive loads. The unit is modularly expandable and connects via Ethernet.

Technical specifications:

• MLFB: 6ED1052-1MD08-0BA2
• Manufacturer: Siemens
• Product line: LOGO!
• Display: Yes
• Supply voltage (rated): 12V DC / 24V DC; permissible range: 10.8-28.8V DC
• Digital inputs: 8 (4 usable as analog inputs, 0-10V)
• Digital outputs: 4 relay outputs
• Output current (signal "1"): max 10A at 0-55°C
• Relay switching capacity: max 10A (resistive), max 3A (inductive)
• Short-circuit protection: No - external fusing required
• Program memory: 400 blocks
• Time switching clocks: 400; power reserve 480h
• Communication: Ethernet
• Functions: Integrated web server, data logging, user-defined web pages, cloud connection, MQTT
• Storage: Standard microSD card
• Programming software: LOGO! Soft Comfort V8.4 or higher
• Mounting: 35mm DIN rail, 4 spacing units wide
• Operating temperature: -20°C to 55°C (no condensation)
• Storage/transport temperature: -40°C to 70°C
• Altitude: -1000m to +2000m
• Dimensions (WxHxD): 71.5 x 90 x 60mm
• EMC: EN 55011 Limit Class B (suitable for residential areas)
• Certifications: CE, UL, FM, Marine approval (in preparation)
• Standards: IEC 61131, VDE 0631

Features and benefits:

• Modularly expandable I/O for scalable system configurations
• Built-in Ethernet with integrated web server enables remote monitoring without additional gateways
• Four dual-mode inputs accept digital or analog (0-10V) signals, reducing wiring complexity
• Cloud connection and MQTT protocol support across all LOGO! 8.4 units
• microSD card slot supports program storage, backup, and transfer between devices
• EN 55011 Class B EMC rating permits installation in residential and light commercial environments

Applications:

• Building lighting and ventilation control using up to 400 programmable time-switching clocks
• Small machine control with relay outputs switching loads up to 10A
• Remote process monitoring and adjustment via Ethernet and integrated web server
• Pump and motor sequencing using combined digital and analog input signals
• Cloud-connected installations transmitting data via MQTT

Compliant with IEC 61131 and VDE 0631; EMC rated to EN 55011 Limit Class B. Part of the Siemens LOGO! range.

Also known as: Siemens 6ED1052-1MD08-0BA2, LOGO! 12/24RCE, Siemens LOGO! 8.4 logic module.