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Safe position - spring return

Safe position - spring return

XB4_imgco_01psd.png
XD4_gc_03svg.png

XB4

Control component with dynamic transducer and spring return actuator for VAV terminal units


Universal device for use with VAV terminal units

  • Controller and dynamic differential pressure transducer in one casing
  • Separate actuator with spring return for adjustable safe position
  • Use in ventilation and air conditioning systems, only with clean air
  • Simple terminal connection without the use of additional junction boxes
  • Suitable for constant and variable volume flow rates
  • Activation of override controls via external switch contacts
  • Volume flow rates qvmin and qvmax are parameterised in the factory and saved in the controller
  • Change of operating parameters via adjustment devices and integrated display
  • Service access for manual adjustment devices and PC configuration software
  • Integrated display for volume flow rate display, operating mode display and setting of operating parameters

 


General information

Application

  • All-in-one control devices for VAV terminal units
  • Dynamic differential pressure transducer and controller electronics combined in one housing
  • Separate actuator with spring return
  • Safe position in case of supply voltage failure or wire breakage can be defined in the order code:
    NC = damper CLOSED, NO = damper in OPEN position
  • For use only with clean air
  • Standard filtration in comfort air conditioning systems allows for use of the controller in the supply air without additional dust protection
  • Suitable for different control tasks depending on the specification of the setpoint value
  • The room temperature controller, central BMS, air quality controller or similar units control the variable volume flow control by specifying setpoint values via analogue signal
  • Override controls for activating qvmin, qvmax, shut-off, OPEN position via switch or relay possible
  • Volume flow rate actual value is available as linear voltage signal


With heavy dust levels in the room

  • Install appropriate exhaust air filters upstream, as a partial volume flow is routed through the transducer for volume flow rate measurement


If the air is contaminated with dust, fluff or sticky components

  • Use of the XD4 attachment group instead of the XB4 universal controller described here


Control strategy



  • The volume flow controller works independent of the duct pressure
  • Differential pressure fluctuations do not result in permanent volume flow rate changes
  • To prevent the control from becoming unstable, a dead band is allowed within which the damper blade does not move.
  • Volume flow rate range parameterised in the controller in the factory
    qvmin: minimum volume flow rate
    qvmax: maximum volume flow rate

  • Operating parameters are specified via the order code and parameterised in the factory




Operating modes

Variable operation (V)

  • Setpoint value setting via analogue interface
  • Signal voltage range corresponds to qvmin to qvmax

Constant value mode (F)

  • A setpoint signal is not required, setpoint value corresponds to qvmin

 




Interface

Analogue interface with adjustable signal voltage range

  • Analogue signal for volume flow rate setpoint value
  • Analogue signal for volume flow rate actual value



Signal voltage ranges

  • 0 – 10 V DC
  • 2 – 10 V DC



Parts and characteristics

  • Transducer for dynamic measurement principle
  • Overload protection
  • Terminal connection for supply line and controls
  • Socket plug for the actuator
  • Terminals with cover
  • Service interface
  • Manual actuator adjustment with crank handle
  • Raised actuator lockable with crank handle
  • Raised actuator unlockable with crank handle



Construction

GUAC-DM3 with spring return actuator 341C-024-05-V/ST06 for:

  • TVR, TZ-Silenzio, TA-Silenzio, TVZ, TVA
  • TVRK up to NW 250

GUAC-DM3 with spring return actuator 361C-024-20-V/ST06 for:

  • TVJ
  • TVT up to dimensions of 1000 x 600
  • TVRK from NW 315



Commissioning

  • Due to the volume flow rates set in the factory, always ensure that the control units are only installed in the specified locations
  • After successful installation and wiring the controller is ready for use
  • Operating parameters can be adjusted by the customer using an adjustment device, potentiometers including display or PC software.



Useful additions

  • Adjustment device type GUIV2-A (order code AT-VAV-G)


Information technique

Function, Specification text, Order code

  • Function
  • SPECIFICATION TEXT
  • ORDER CODE
Principle of operation Universal controller: TVR, TVJ, TVT, TZ-/TA-Silenzio, TVZ, TVA, TVRK XD4_gc_01ai.png

① Differential pressure transducer

② Actuator

③ Volume flow controller

④ Setpoint value signal


A closed control circuit for regulation of the volume flow rate, i.e. measuring - comparing - adjusting, is characteristic of air terminal units.
The volume flow rate is determined by measuring a differential pressure (effective pressure). This is done using a differential pressure sensor. An integrated differential pressure transducer converts differential pressure into a voltage signal. The actual volume flow rate value is available as a voltage signal. Due to factory adjustment, 10 V DC always corresponds to the nominal volume flow (qvnom).
The volume flow rate setpoint value is specified by a higher-level controller (e.g. room temperature controller, air quality controller, central BMS). Variable volume flow control results in a value between qvmin and qvmax. It is possible to override the room temperature control, e.g. by a complete shut-off of the duct.
The controller compares the volume flow rate setpoint value to the actual value and controls the external actuator accordingly. If the supply voltage is interrupted or the wire breaks, the spring return actuator moves to the fail-safe position Open (NO) or Closed (NC) as specified in the order code.


Category

  • Universal controller for volume flow rate



Application

  • Regulation of a constant or variable volume flow rate setpoint
  • Electronic controller for connecting a reference value and for tapping an actual value signal
  • The actual value signal relates to the nominal volume flow rate such that commissioning and subsequent adjustment are simplified
  • Stand-alone operation or integration in central building management system




Area of application

  • Dynamic transducer for clean air in ventilation and air conditioning systems




Actuator

  • Spring return actuator for defined safe position of the damper blade in case of power failure
  • run time max. 150s for 90°; run time spring return <20s for 90




Installation orientation

  • either direction




Connection

  • Connection terminals




Supply voltage

  • 24 V AC/DC




Interface/signalling

  • Analogue signal 0 – 10 V DC or 2 – 10 V DC




Interface information

  • Analogue: Volume flow setpoint and actual value




Special functions

  • Display for volume flow actual value display and parameter setting.
  • Activation Vmin, Vmax, CLOSED, OPEN by external switch contacts/circuitry




Parameter setting

  • Parameters specific to VAV terminal unit parameterised at the factory
  • Operating values Vmin, Vmax factory parameterised
  • Signal characteristic factory parameterised
  • Subsequent adjustment directly via control elements and display on the controller or by means of optional tools: adjustment device, PC software (wired in each case)




Factory condition

  • Electronic controller factory-mounted on the terminal unit
  • Factory parameter settings
  • Functional test under air, certified with sticker


TVRD / 200 / D2 / XB4 / V0 / qvminqvmaxm³/h / NC
||||||||||
1256789101112

1 Type
TVR VAV terminal unit 

2 Acoustic cladding
No entry: none
D With acoustic cladding 

3 Material
Galvanised sheet steel (Standard construction)
P1 Powder-coated RAL 7001, silver grey

A2 Stainless steel construction 

5 Nominal size [mm]
100, 125, 160, 200, 250, 315, 400 

6 Accessories

No entry: none
D2 Double lip seal both sides
G2 Matching flanges for both ends 

7 Attachments (control component)
XB4 Universal controller with dynamic transducer 

8 Operating mode

F Constant value (a setpoint value)
V  Variable (setpoint value range) 

9 Signal voltage range

0 0 – 10 V DC

2 2 – 10 V DC 

10 Operating values for factory setting
Volume flow rates in m³/h or l/s
qvconst (only with operating mode F)
qvmin (only with operating mode V)
qvmax (only with operating mode V) 


11 Volume flow unit

m³/h
l/s 

12 Damper blade position
NO Power off to OPEN
NC Power off to CLOSE


Order example: TVR/100/D2/XB4/V0/50-354 m³/h/NC
Acoustic claddingWithout
MaterialGalvanised sheet steel
Nominal size100 mm
AccessoriesDouble lip seal both sides
AttachmentUniversal controller, dynamic transducer, spring return actuator
Operating modeVariable operation – signal voltage range 0 –10 V DC
Volume flow rate50 – 354 m³/h
Damper blade positionNC Normally CLOSED
 
 

Variants

  • VARIANTS


Technical data

  • TECHNICAL DATA


Universal controller for VAV terminal units


Controller

Spring return actuator

Order code detail

Part numberTypePart numberType

VAV terminal units

XB4A00000038352GUAC-DM3A00000038357

341C-024-05-V/ST06





XB4A00000038352GUAC-DM3A00000038355

361C-024-20-V/ST06






① TVR, TZ-Silenzio, TA-Silenzio, TVZ, TVA, TVRK up to NW 250

② TVJ, TVT up to dimensions 1000 x 500, TVRK from NW 315

 

 

 

Universal controller XB4, type GUAC-DM3 for VAV terminal units


Supply voltage (AC)24 V AC ± 20%, 50/60 Hz
Supply voltage (DC)24 V DC ± 20 %
Power rating (AC)

1.3 VA plus actuator used *


Power rating (DC)

0.6 W plus actuator used *




Input setpoint value signal or override control




0 – 10 V DC, Ra > 100 kΩ or 2 – 10 V DC, Ra > 50 kΩ


Actual value signal output

0 – 10 V DC or 2 – 10 V DC, max. 0,5 mA


IEC protection classIII (protective extra-low voltage)
Protection levelIP 42
EC conformityEMC to 2014/30/EU
Weight

400 g



* When dimensioning the transformers and the supply cable for the universal controller, the power consumption of the associated actuator must be taken into account.
** Input can be connected to supply voltage as part of override control.




 



Actuator with spring return 341C-024-05-V/ST06


Supply voltageFrom the controller
Power consumption motor (movement)

5.0 W


Standby power consumption (end position)

2.0 W


Rating



7.5 VA


Torque

5 Nm


Run time for 90°

100 s


Spring return time

< 20 s


Setpoint value signal inputFrom the controller
IEC protection classIII (protective extra-low voltage)
Protection levelIP 54 (cable entry at the bottom)
EC conformityEMC to 2014/30/EU
Weight

1.3 kg





Actuator with spring return 361C-024-20V/ST06


Supply voltageFrom the controller
Power consumption motor (movement)

8.0 W


Standby power consumption (end position)

2.0 W


Rating



11.5 VA


Torque

20 Nm


Run time for 90°

150 s


Spring return time

< 20 s


Setpoint value signal inputFrom the controller
IEC protection classIII (protective extra-low voltage)
Protection level

IP 54

EC conformityEMC to 2014/30/EU
Weight

1.6 kg




 




Display range of functions

Display functions

  • Volume flow rate actual value (unit optionally m³/h, l/s)
  • Display via 3-character display with position valuation labelling (upstroke symbolises thousands of digits)
  • Status and error display for various operating modes, including display of activated override control, display of diagnostic function
  • Display of the firmware version

 

Setting options

  • Unit of the volume flow rate display m³/h or l/s
  • Work areas qvmin, qvmax
  • Signal voltage range 0 - 10 V or 2 - 10 V DC

 

Diagnostic function

  • Activation of override controls OPEN, CLOSED, qvmin, qvmax, motor stop

 

Commissioning

  • On-site adjusting is not required
  • Due to the volume flow rates set in the factory, always ensure that the control units are only installed in the specified locations
  • After successful installation and wiring the controller is ready for use
  • Comply with the volume flow control range of the volume flow controller, in particular do not fall below the technically minimum volume flow rate
  • Only briefly remove the protective cap of the control component during wiring


Téléchargements

Information produit

Certificats

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Nous sommes à votre disposition

Veuillez spécifier le sujet de votre requête et vos coordonnées.
Tel.: +33 1 56 70 54 54

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Les champs marqués d'une étoile (*) sont obligatoires.

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Si vous avez des questions d'ordre général sur nos produits et services, vous pouvez également nous contacter à l'adresse suivante:
Tél .: +49 (0) 2845 2020 | Fax: +49 (0) 2845 202265