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Operator panels Schneider Electric STU

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Schneider Electric Magelis STU Operator Panels

The Magelis STU series from Schneider Electric comprises compact color touchscreen operator panels featuring TFT displays with 320x240 pixel resolution. They combine an intuitive graphical interface with robust industrial-grade construction, making them an optimal solution for process visualization and control in compact automation applications.

STU Series Technical Specifications

Magelis STU panels feature a color TFT screen with a 65,536-color palette, providing clear rendering of charts, diagrams, and process schematics. Key technical parameters of the series:

  • Display type: TFT, color, touchscreen
  • Resolution: 320x240 pixels (QVGA)
  • Color depth: 65,536 colors
  • Communication ports: RS232, RS485 (RJ45 connector)
  • Communication protocol: Modbus RTU/ASCII
  • USB ports: host and client for project download and peripheral connection
  • Transfer speed: up to 115.2 Kbps

Magelis STU Operator Panel Models

The series includes two models with different screen sizes, allowing you to select the optimal option based on workspace requirements and the volume of information to be displayed:

ModelScreen SizeMatrixInterfacesApplication
HMISTU6553.5 inchesTFT, 65,536 colorsRS232, RS485, USBCompact control cabinets, small installations
HMISTU8555.7 inchesTFT, 65,536 colorsRS232, RS485, USBStandard automation systems, pumping stations

Magelis STU Applications

Thanks to their compact dimensions and extensive communication capabilities, STU panels are used across various industrial automation sectors:

  • Water supply and drainage: pump operation monitoring, reservoir levels, network pressure
  • HVAC systems: climate control management, temperature and humidity monitoring
  • Packaging equipment: packaging line status visualization, parameter monitoring
  • Conveyor systems: speed display, product counting, alarm messaging
  • Small production lines: control of individual units with limited mounting space

STU panels are compatible with Schneider Electric Modicon M221, M241, and M340 controllers, as well as equipment from other manufacturers supporting Modbus RTU/ASCII.

Other Schneider Electric Operator Panel Series

If you need a larger screen or enhanced communication options, consider other Schneider Electric series in our catalog:

  • Magelis STO -- monochrome text panels, 3.4 inches, for basic monitoring tasks
  • Magelis XBT -- full range from 2.5 to 15 inches with Ethernet and TCP/IP support

Warranty and Support

Schneider Electric Magelis STU panels come with official manufacturer warranty. We provide technical support for model selection, integration with existing automation systems, and communication setup. Delivery across Ukraine.

Frequently Asked Questions

What is the difference between an HMI panel and a PLC?

A PLC runs the automation logic, while the HMI shows the machine state and sends operator commands to the controller or VFD. If you need I/O and control logic, use a PLC. If you need a screen with buttons, alarms and setpoints, use an HMI.

Which HMI screen size should I choose for a control cabinet?

For a simple machine, 4.3-5.7 inches is usually enough. A 7-inch panel works well for pump stations, ventilation and small machines. Choose 10.1 inches or larger when the operator needs trends, recipes, alarm logs or several mimic screens.

Does an operator panel need Ethernet?

Ethernet is useful for Modbus TCP/IP, several controllers, remote service or connection to the plant network. If the panel is next to one VFD and communicates over RS-485, Modbus RTU is often enough.

Can an HMI be connected directly to a VFD?

Yes, if the VFD supports Modbus RTU or Modbus TCP and the register map is available. For Veichi drives we often check VI20 or VI30 panels because they fit Veichi-based control cabinets well.

What information is needed to replace an old operator panel?

Send the old panel part number, cutout size, supply voltage, port type, protocol and the project file if it is available. Without the project file, the screen project often has to be rebuilt.

Can you select an HMI for a specific PLC?

Yes. Send the PLC or VFD model, required screen size and communication method. We will check the ports and suggest the series that fits the project best.