EASYLAB TCU3

Fume cupboard control

Circular VAV terminal units made of polypropylene (PPs), for variable air volume systems and fume cupboards. Suitable for the control of extract air containing aggressive media since all components coming into contact with the airflow are made of plastic (no interior metal parts).

Ready-to-operate unit consists of the mechanical parts and the electronic control components (attachments). Each unit contains a damper blade and an averaging effective pressure sensor with bluff body or a Venturi nozzle for volume flow rate measurement. Factory assembled control components (attachments) complete with wiring and tubing.

Effective pressure sensor with 3 mm measuring holes, hence resistant to dust and pollution.

Spigot, suitable for ducts according to DIN 8077.

Position of the damper blade indicated externally at shaft extension.

Closed blade air leakage to EN 1751, class 4.

Casing air leakage to EN 1751, class C.

Materials and surfaces

• Casing made of ABS plastic, blue (RAL 5002)

Technical data

• Nominal sizes: 250 mm
• Volume flow rate range: 30 to 360 l/s or 108 to 1296 m³/h
• Volume flow rate control range: approx. 15 – 100 % of the nominal volume flow rate
• Differential pressure range: 5 – 1000 Pa

Control component (attachments)

Electronic controller for the demand-based control of variable volume flow rates in fume cupboards including the integrated monitoring of the aerodynamic function according to EN 14175 with optical and acoustic signalling.

Factory mounted onto the VAV terminal unit, complete with wiring and tubing, aerodynamically tested and factory set to the customer's parameters.

Equipment function:

FH-VS: Volume flow control on the basis of the measured face velocity and incorporating thermal loads. Monitoring of volume flow rate and face velocity.

Control electronics using a microprocessor, with configuration settings stored in EEPROM memory and hence safe in case of a power failure. 5 analog inputs, 6 volt-free digital inputs, 3 analog outputs, and 6 digital outputs as relay changeover contacts. Static differential pressure transducer with room air induction to protect the measurement point. Maintaining of the volume flow rates through a permanent setpoint/actual value comparison in a closed loop with a limitation to minimum and maximum volume flow rates.

Connections for all important communication and peripheral devices are located on the outside of the casing and hence easily accessible. Indicator lights on the outside of the casing for alarms (on both sides), controller function (heartbeat), and communication.

Communication system with plug-in communication lines, automatic connection setup without manual network configuration, easy to expand with additional controllers (usually without integration issues).

Integration of variable or constant volume flow rates in the room balance using voltage signals, switch contacts or constant values. Signalling of volume flow rate actual values, damper blade positions, faults, and status messages to central BMS with analog or switch outputs.

Connection of one or two (for fume cupboards with sash windows on two sides) adaptable EASYLAB control panels BE-SEG-** or BE-LCD-01 with optical and acoustic signalling. Alarm sound can be deactivated or the duration can be limited.

Alarms and alarm signalling are configurable, e.g. suppressing alarms for certain operating modes or consolidating alarms from different levels.

Operating mode default setting by the central BMS, room control panel, or fume cupboard control panel, with flexible prioritisation and shut-off options. Supported special operating modes: increased operation, reduced operation, shut-off, and open position

Additional special functions

• Support of fume cupboards with supportive flow technology
• Safe control of an extract air scrubber
• Connection of motion detectors
• Smoke extract
• Control of the fume cupboard lighting
• Control of an automatic sash device
• Application of diversity factors when using EASYLAB TAM

5 analog inputs for connecting the sensor system and for integrating up to 4 variable volume flows.

6 volt-free digital inputs for the integration of constant volume flow rates and/or for the control of special functions.

3 analog outputs for signalling volume flow rate actual values and the controller damper blade position as well as the total volume flow rate for the room (supply air, extract air, or supply air setpoint value).

1 digital output for volume flow rate alarm with configurable alarm conditions.

5 digital outputs for various special functions.

Fast-running actuator (run time 90° < 3 s)

Supply voltage 24 V AC.

Extract air controller / supply air controller

Circular VAV terminal units for variable and constant volume flow systems, suitable for supply or extract air, available in 7 nominal sizes.

High control accuracy (even with upstream bend R = 1D).

Ready-to-operate unit consists of the mechanical parts and the electronic control components (attachments). Each unit contains an averaging effective pressure sensor for volume flow rate measurement, and a control damper blade. Factory assembled control components (attachments) complete with wiring and tubing.

Effective pressure sensor with 3 mm measuring holes, hence resistant to dust and pollution.Spigot with groove for lip seal, suitable for connecting ducts according to EN 1506 or EN 13180.

Position of the damper blade indicated externally at shaft extension.

Closed blade air leakage to EN 1751, class 4 (nominal size 100, class 2; nominal sizes 125 and 160, class 3).

Casing air leakage to EN 1751, class C

Materials and surfaces

• Casing made of ABS plastic, blue (RAL 5002)

Technical data

• Nominal sizes: 100 to 400 mm
• Volume flow rate range: 12 to 1680 l/s or 44 to 6048 m³/h
• Volume flow rate control range: approx. 15 – 100 % of the nominal volume flow rate
• Differential pressure range: 5 – 1500 Pa

Control component (attachments)

Electronic controller for demand-based, variable volume flow control of supply or extract air in laboratories and for various tasks in hospitals and clean rooms.

Factory mounted onto the VAV terminal unit, complete with wiring and tubing, aerodynamically tested and factory set to the customer's parameters.

Equipment function:

EC/SC: Control of the demand-based supply air flow rate / extract air flow rate.

Up to 3 volume flow rate setpoint values can be stored on the controller and selected by an external device; shut-off is also possible.

Setpoint value from an external unit (0(2) – 10 V DC signal) as an alternative.

Control electronics using a microprocessor, with configuration settings stored in EEPROM memory and hence safe in case of a power failure.

1 analog input, 6 volt-free digital inputs, 3 analog outputs, and 6 digital outputs as relay changeover contacts.

Static differential pressure transducer with room air induction to protect the measurement point.

Maintaining of the volume flow rates through a permanent setpoint/actual value comparison in a closed loop.

Connections for all important communication and peripheral devices are located on the outside of the casing and hence easily accessible.

Indicator lights on the outside of the casing for alarms (on both sides), controller function (heartbeat), and communication.

Communication system with plug-in communication lines, automatic connection setup without manual network configuration, easy to expand with additional controllers (usually without integration issues).

Signalling of volume flow rate actual values, damper blade positions, faults, and status messages to central BMS with analog or switch outputs.

Alarms and alarm signalling are configurable, e.g. suppressing alarms for certain operating modes or consolidating alarms from different levels. Up to 24 controllers can be connected to the communication line (fume cupboards, extract air, supply air, room controller).

Inputs and outputs

1 analog input for the default setting of a setpoint value from an external unit.

6 volt-free digital inputs.

3 analog outputs for the signalling of volume flow rate actual value and controller damper blade position as well as (optional) total extract air flow rate, total supply air flow rate, or total supply air flow rate setpoint value.

1 digital output for volume flow rate alarm with configurable alarm conditions.

Fast-running actuator (running time 90° < 3 s)supply voltage 24 V AC.

Room control

Circular VAV terminal units for variable and constant volume flow systems, suitable for supply or extract air, available in 7 nominal sizes.

High control accuracy (even with upstream bend R = 1D).

Ready-to-operate unit consists of the mechanical parts and the electronic control components (attachments). Each unit contains an averaging effective pressure sensor for volume flow rate measurement, and a control damper blade. Factory assembled control components (attachments) complete with wiring and tubing.

Effective pressure sensor with 3 mm measuring holes, hence resistant to dust and pollution.Spigot with groove for lip seal, suitable for connecting ducts according to EN 1506 or EN 13180.

Position of the damper blade indicated externally at shaft extension.

Closed blade air leakage to EN 1751, class 4 (nominal size 100, class 2; nominal sizes 125 and 160, class 3).

Casing air leakage to EN 1751, class C

Materials and surfaces

• Casing made of ABS plastic, blue (RAL 5002)

Technical data

• Nominal sizes: 100 to 400 mm
• Volume flow rate range: 12 to 1680 l/s or 44 to 6048 m³/h
• Volume flow rate control range: approx. 15 – 100 % of the nominal volume flow rate
• Differential pressure range: 5 – 1500 Pa

Control component (attachments)

Electronic controller for demand-based, variable volume flow control of supply or extract air in laboratories and for various tasks in hospitals and clean rooms.

Factory mounted onto the VAV terminal unit, complete with wiring and tubing, aerodynamically tested and factory set to the customer's parameters.

Equipment function:

RS/LAB: Control of the demand-based supply air flow rate which results from the actual total extract air flow for the room; this strategy takes a user-defined difference into account in order to maintain the negative pressure in compliance with DIN 1946, part 7.

Control electronics using a microprocessor, with configuration settings stored in EEPROM memory and hence safe in case of a power failure. 5 analog inputs, 6 volt-free digital inputs, 3 analog outputs, and 6 digital outputs as relay changeover contacts. Static differential pressure transducer with room air induction to protect the measurement point. Maintaining of the volume flow rates through a permanent setpoint/actual value comparison in a closed loop with a limitation to minimum and maximum volume flow rates.

Connections for all important communication and peripheral devices are located on the outside of the casing and hence easily accessible. Indicator lights on the outside of the casing for alarms (on both sides), controller function (heartbeat), and communication.

Communication system with plug-in communication lines, automatic connection setup without manual network configuration, easy to expand with additional controllers (usually without integration issues).

Integration of variable or constant volume flow rates in the room balance using voltage signals, switch contacts or constant values. Signalling of volume flow rate actual values, damper blade positions, faults, and status messages to central BMS with analog or switch outputs.

Alarms and alarm signalling are configurable, e.g. suppressing alarms for certain operating modes or consolidating alarms from different levels.

Balancing of up to 24 EASYLAB controllers on the communication line (fume cupboards, extract air, supply air. other connections). Automatic distribution of the extract air or supply air flow rates across several EASYLAB volume flow controllers for one room; alternatively, distribution can be configured individually.

Control input signal for sun protection/blinds (to be provided by others) or for shut-off dampers (to be provided by others) for the volume flow rate dependent optimisation of the diffuser discharge velocity

Inputs and outputs

4 analog inputs for integrating variable volume flows

6 digital inputs for integrating constant volume flow rates

3 analog outputs for the signalling of volume flow rate actual value and controller damper blade position as well as (optional) total extract air flow rate, total supply air flow rate, total supply air flow rate setpoint value

1 digital output for volume flow rate alarm with configurable alarm conditions

2 digital outputs for balancing volume flow rates at diffusers

Fast-running actuator (actuation time 90° < 3 s)

Supply voltage 24 V AC

Additional functions with active room management function

• Connection of one or two adjustable EASYLAB room control panels BE-LCD-01 (only for systems without a fume cupboard)
• Operating mode default setting for all controllers in the room
• Central interface point for individual or consolidated faults
• Monitoring of the room functions in case total extract air flow rate falls short of minimum value or total extract air flow rate exceeds maximum value (diversity)
• Limitation of the total extract air flow rate (diversity control)
• Operating mode default setting by the central BMS, room control panel, or fume cupboard control panel, with flexible prioritisation and shut-off options; special operating modes: increased operation, reduced operation, shut-off, and OPEN position
• Centralised configuring of room parameters
• Volume flow rate setpoint change based on temperature control or on external differential pressure control
• Connection of a room pressure transducer for pressure control
• Configurable consolidated alarms

Inputs and outputs

4 analog inputs for integrating a volume flow rate setpoint change based on temperature, a volume flow rate setpoint change based on pressure, and/or a differential pressure transducer for internal differential pressure control. Unused inputs can be used for integrating variable volume flow rates.

6 volt-free digital inputs for operating mode default setting, switching between two pressure setpoint values and/or a door contact. The remaining inputs which are not used otherwise can be used for integrating constant volume flow rates.

3 analog outputs for the signalling of volume flow rate actual value and controller damper blade position as well as (optional) total extract air flow rate, total supply air flow rate, or total supply air flow rate setpoint value

6 digital outputs for volume flow rate alarm, pressure alarm with internal differential pressure control, consolidated alarm, volume flow rate optimisation at diffusers, or integration of sun protection/blinds and/or lighting or devices. Alarm conditions can be configured.

This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme.

Fume cupboard control

Inputs

4 analog inputs

• Up to 4 analog inputs with configurable characteristics for the integration of variable flows
• 3 inputs for equipment functions FH-VS, FH-DS, and FH-DV
• 4 inputs for equipment functions FH-2P, FH-3P, and FH-F

6 digital inputs

• The table below shows the available equipment functions, special functions, and the number of inputs required

Outputs

3 analog outputs

• Volume flow rate actual value
• Damper blade position
• Total extract air flow rate, total supply air flow rate, or total supply air flow rate setpoint value

6 digital outputs

• Alarm state
• Control of extract air scrubbers, supportive flow technology, automatic sash device, and fume cupboard lighting

Expansion modules as interfaces to the central BMS

• LonWorks FTT-10A (EM-LON)
• BACnet MS/TP (EM-BAC-MOD-01)
• Modbus RTU (EM-BAC-MOD-01)
• BACNET-IP (EM-IP)
• Modbus-IP (EM-IP)
• Webserver (EM-IP)

The following operating values and fault messages of the fume cupboard controller are signalled via the network:

• Volume flow rate actual value and setpoint value
• Damper blade position
• Operating mode
• Face velocity actual value and setpoint value
• Sash opening (FH-DS and FH-DV)
• Switching step (FH-2P and FH-3P)
• Alarm state
• Switching state of the digital inputs and outputs
• Number of controllers within the EASYLAB system
• Total extract air and total supply air volume flow rates
• Evaluated damper blade positions within the system

In addition, extract air and supply air volume flow rates can be permanently integrated into the room balance.