Modicon M251 Logic Controller 2 x Ethernet

The Modicon M251 Logic Controller with 2 Ethernet Ports by Schneider Electric is designed to maximise efficiency in automated control systems, providing powerful communication, expansion, and data management capabilities. Ideal for industrial and machine automation applications, this controller offers flexibility and advanced performance, allowing connection and management of up to 7 local expansion modules and 14 remote I/O modules.

Technical Features:

• Product Range: Modicon M251
• Product Type: Programmable Logic Controller (PLC)
• Power Supply Voltage: 24 V DC (operating range from 20.4 to 28.8 V)
• Power Consumption: 32.6 W to 40.4 W
• Memory Capacity:
  • 64 MB of RAM for the system
  • 128 MB of integrated flash memory for user program backup
  • Support for SD card (optional) with capacity up to 32 GB
• Battery: Non-rechargeable lithium BR2032 with a lifespan of 4 years
• Time Backup: 2 years of backup time at 25°C
• Connections:
  • 2 Ethernet ports RJ45 (10/100 BASE-T)
  • 1 USB 2.0 port (with mini B connector)
  • 1 RS232/RS485 serial port (with RJ45 connector)
  • SD card port

The Modicon M251 stands out for its ability to handle large volumes of data through its Ethernet ports, facilitating communication with other control devices and external systems. It is ideal for applications requiring decentralised control, as it can manage up to 14 remote I/O modules, allowing system expansion without compromising efficiency.

Advanced Functions:

• Integrated Web Server: Allows remote monitoring and control of the system via a web browser.
• FTP Server: Facilitates file transfer and data exchange with other devices or servers.
• Modbus TCP Client and Server: Allows integration into industrial networks based on the Modbus protocol for communication with other devices.
• OPC UA Support: Provides connectivity with software systems based on OPC, enhancing interoperability.
• SMS and Email Notifications: Enables sending alerts or notifications based on system events.

Additional Specifications:

• Number of Cyclic Tasks: Up to 4 master cyclic tasks, 8 event-based tasks, and 1 free cycle task.
• Clock Accuracy: Maximum deviation of 60 seconds per month at 25°C.
• Transmission Speed:
  • USB: Up to 480 Mbit/s
  • RS232/RS485: From 1.2 to 115.2 kbit/s
• Surge Resistance: Up to 1 kV in common mode and 0.5 kV in differential mode.

Installation and Compatibility:

The Modicon M251 is easily mounted on a DIN rail with support for TH35-15 and TH35-7.5 rails, facilitating its installation in industrial electrical panels. Its compact design, with a width of just 54 mm, allows integration into confined spaces without sacrificing capacity or performance.

Applications:

This logic controller is ideal for a variety of industrial applications, including:

• Machine and Process Automation: Perfect for controlling complex systems in factories, production lines, or transportation systems.
• Building Management: Controls HVAC systems, lighting, and other automated devices in commercial and industrial buildings.
• Remote Monitoring Systems: Its ability to connect to Ethernet networks and its integrated web server allow for remote monitoring and control, ideal for remote control applications.

Additional Advantages:

• Expansion Capability: Supports up to 7 local modules and 14 remote modules, providing great flexibility in designing automated systems.
• Robustness and Durability: With an IP20 rating, it is ideal for industrial environments and offers basic protection against accidental contact.
• High Communication Capacity: The 2 Ethernet ports provide fast data transfer, essential for real-time applications.

Dimensions and Weight:

• Height: 90 mm
• Depth: 95 mm
• Width: 54 mm
• Weight: 0.22 kg

The Modicon M251 Logic Controller 2 x Ethernet by Schneider Electric is an advanced solution for industrial automation, with powerful expansion capability, fast communication, and various advanced control and monitoring functions. Its compact design and easy installation make it an ideal choice for projects requiring high performance, flexibility, and connectivity in industrial networks. With support for multiple communication protocols, web and FTP server functions, and the ability to control up to 14 remote modules, this controller is an efficient and reliable tool for managing complex automated systems.