Beijer E300 04380
Beijer E300 04380 - Image 2

Beijer E300 04380

Product Introduction: E300 04380 is a legacy panel mount human-machine interface from Beijer Electronics. It combines LCD display, membrane function keys and numeric keypad for industrial machine operation and monitoring. It communicates with PLC and controllers via serial ports to display process values, alarm messages and allow operator setpoint input. It is widely used as spare part replacement for older industrial machinery, incinerators and factory automation systems.

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Description

Beijer E300 04380

Technical Specifications:

  • Display: Monochrome LCD graphic display with backlight
  • Mounting: Panel cutout mounting
  • Power Supply: 24V DC
  • Communication Ports: RS232, RS422/RS485 serial ports
  • Keypad: Numeric keypad, navigation keys and dedicated function F keys
  • Operating Temperature: 0°C to +50°C
  • Storage Temperature: -20°C to +70°C
  • Front Panel Protection: IP65 when properly sealed
  • Memory: Non-volatile flash memory for HMI application project

Function Features:

  • Real-time display of PLC register values, alarms and machine status
  • Numeric keypad for setpoint entry and parameter modification
  • Customizable function keys for direct trigger of machine functions
  • Multi-state alarm message display and alarm logging
  • Serial communication with multiple PLC brands via built-in protocols
  • Recipe storage for product parameter sets
  • Front panel LED indicators for power and communication status
  • Project download via serial port for application programming

Application Scenarios:

  • Incinerator and waste treatment machine control panels
  • Packaging machinery operator interface
  • Conveyor and material handling systems
  • Legacy factory automation machine retrofit spare replacement
  • Water treatment plant control panels

Material Composition:

  • Front Bezel: Flame retardant black plastic
  • Membrane Keypad: Polyester membrane with conductive silver traces
  • Display Module: LCD glass, backlight assembly
  • Internal PCB: FR4 fiberglass circuit board
  • Rear Housing: Metal sheet metal enclosure
  • Terminals: Screw type copper terminals for power and serial wiring

Structural Features:

  • Rectangular front panel with integrated membrane keypad and LCD
  • Rear metal housing containing PCB and communication connectors
  • Mounting clips for panel cutout installation
  • Rear terminal block and D-sub serial connectors
  • Sealing gasket on front panel to maintain IP65 rating

Working Principle: The HMI application project stored in flash memory defines display screens, alarms and keypad actions. The unit communicates with connected PLC via serial bus to continuously read register data and update screen display. When operator presses keypad or function keys, the terminal sends write commands to PLC registers to adjust setpoints or trigger machine actions. Alarm events received from PLC trigger message display on LCD.

Installation Requirements:

  • Install into control panel cutout, fit sealing gasket between panel and HMI bezel
  • Tighten rear mounting clips evenly to avoid front panel deformation
  • Route serial communication cable as shielded twisted pair
  • Separate 24V DC power wiring from high voltage cables
  • Keep away from strong vibration and direct sunlight
  • Maintain cabinet ventilation to prevent overheating

Usage Notes:

  • Download matching HMI project before commissioning
  • Verify PLC communication protocol and station address settings
  • Protect membrane keypad from sharp objects and chemical solvents
  • Replace backlight assembly if display brightness degrades
  • Disconnect 24V power before opening rear housing
  • Check gasket integrity periodically to preserve IP65 front protection

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