BE-LCD

The BE-LCD control panel is used to display and control the most critical aerodynamic and safety-related functions of a fume cupboard or a room. Users obtain information regarding the condition of the fume cupboard or room and can select among various operating modes. The individual display elements and controls are as follows:

• Three-colour status display
• Warning display
• 40-character display
• Alarm sounder
• 8 function button fields: 1 acoustic alarm acknowledgement, 3 operating mode buttons, 2 buttons for the automatic sash device, 1 button for the fume cupboard lighting, 1 button for manual control
• Service socket

The range of functions of the control panel can be adapted to project-specific requirements using the EasyConnect configuration software. The range of functions may vary for different fume cupboards or rooms.

The function button fields are used for display and for operation. The available functions are highlighted in blue.

A required function can be selected by pressing the corresponding button.

• Selecting an operating mode
• Automatic sash device
• Fume cupboard lighting on/off

The 40-character display shows system messages or, if enabled, actual values.

Application

• Displaying and operating the aerodynamic functions of fume cupboards
• Status display to EN 14175
• Connection to fume cupboard controller EASYLAB TCU3
• Two control panels can be used for each fume cupboard controller, e.g. for fume cupboards with sash windows on two sides

Functions

• Signalling of safety-related functions for fume cupboards according to EN 14175
• Sash distance monitoring

Text displays

• Volume flow rate actual value and setpoint value
• Face velocity actual value (fume cupboards with face velocity transducer, equipment function FH-VS)
• Divesity threshold has been exceeded
• Service is due
• Power supply failure (EASYLAB controller with expansion module EM-TRF-USV)
• Smoke extract
• Extract air scrubber is active

Configurable functions

• Operating modes
• Lighting
• Automatic sash device

Operating modes

• Increased volume flow (emergency operation)
• Reduced volume flow (night-time operation)
• Shut-off (night-time operation, system shutdown)
• Manual mode (permanent override of central settings)
• Increased volume flow and manual mode can be set for a limited period

The fume cupboard controller monitors the required volume flow rate and, depending on configuration, the face velocity. A relevant deviation is indicated on the three-colour status display, together with the text LOW or HIGH. If the volume flow rate is too low, an acoustic alarm is sounded.

Status display

• Green: Normal operation
• Red with text LOW: Alarm, volume flow rate too low
• Yellow with text HIGH: Warning, volume flow rate too high

The red signal can be configured either as a permanent light or blinking, as recommended by EN 14175

40-character display

• Text display of operating values, system states and faults in various languages
• Information about the safety of the user's workplace

Controls

• Function buttons to switch operating modes, automatic sash device or fume cupboard lighting

Application

• Displaying and operating the aerodynamic functions for rooms with up to 24 EASYLAB controllers TCU3
• Connection to room controller EASYLAB TCU3 or TAM with active room management function
• The room control panel is the main unit for the room operating mode concept within the EASYLAB system
• Two room control panels can be used for each room controller, e.g. on the two doors to a large laboratory

Functions

• State signalling for the configured room functions

Monitoring

• Minimum total room extract air (shortfall will be signalled)
• Total room extract air (excess will be signalled)
• Room or duct pressure control
• Configurable consolidated alarm (volume flow rate deviations, device faults) for all controllers in a room

Text displays

• Room operating mode
• Total room extract air setpoint value and actual value (can be configured)
• Room pressure setpoint value and actual value (can be configured)
• System and device faults
• Power supply failure (EASYLAB controller with expansion module EM-TRF-USV)
• Divesity threshold has been exceeded or diversity control is active (option)

Configurable functions

• Selection of operating mode for all controllers in a room, without additional wiring
• Increased volume flow (emergency operation)
• Reduced volume flow (night-time operation)
• Shut-off (night-time operation, system shutdown)
• Manual mode (permanent override of central settings)
• Control input signal for an individually usable relay changeover contact, e.g. for lighting
• Control input signal for sun protection/blinds (to be provided by others)
• Increased volume flow and manual mode can be set for a limited period

Depending on the control strategy and configuration, the control panel monitors and signals for example the total volume flow rates or pressure conditions for a room that is equipped with up to 24 EASYLAB controllers. Relevant deviations are indicated on the three-colour status display. As an option, acoustic alarms can be configured. Controller faults are signalled to the room control panel as an configurable consolidated alarm. The necessary data is exchanged between the controllers via the EASYLAB communication cable.

Installation and commissioning

• Mounting on the fume cupboard, using the adapter: right-hand side frame, left-hand side frame, above the sash, or below the sash
• Mounting on walls or furniture, also directly on junction boxes
• Connect the control panel to the EASYLAB controller TCU3 or to TAM
• Controller recognises the control panel
• If necessary, make project-specific adjustments using the EasyConnect configuration software