XB4

Safe position - spring return

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 q_vmin and q_vmax 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 q_vmin, q_vmax, 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
q_vmin: minimum volume flow rate
q_vmax: 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 q_vmin to q_vmax

Constant value mode (F)

A setpoint signal is not required, setpoint value corresponds to q_vmin

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)

Technical information

Function, Specification text, Order code

Principle of operation Universal controller: TVR, TVJ, TVT, TZ-/TA-Silenzio, TVZ, TVA, TVRK

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 (q_vnom).
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 q_vmin and q_vmax. 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 V_min, V_max, CLOSED, OPEN by external switch contacts/circuitry

Parameter setting

Parameters specific to VAV terminal unit parameterised at the factory
Operating values V_min, V_max 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

TVR

–

200

XB4

qvmin

–

qvmax

m³/h

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
q_vconst (only with operating mode F)
q_vmin (only with operating mode V)
q_vmax (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 cladding	Without
Material	Galvanised sheet steel
Nominal size	100 mm
Accessories	Double lip seal both sides
Attachment	Universal controller, dynamic transducer, spring return actuator
Operating mode	Variable operation – signal voltage range 0 –10 V DC
Volume flow rate	50 – 354 m³/h
Damper blade position	NC Normally CLOSED

Variants

Universal controller XB4, type GUAC-DM3

① Universal controller
② Differential pressure transducer
③ Alternative cable access
④ Cable gland for supply line
⑤ Display
⑥ Potentiometers
⑦ Selection setting menu
⑧ Connections behind removable cover

Technical data

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

Universal controller for VAV terminal units

–	Controller		Spring return actuator		–
Order code detail	Part number	Type	Part number	Type	VAV terminal units
XB4	A00000038352	GUAC-DM3	A00000038357	341C-024-05-V/ST06	①
XB4	A00000038352	GUAC-DM3	A00000038355	361C-024-20-V/ST06	②

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 class	III (protective extra-low voltage)
Protection level	IP 42
EC conformity	EMC 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 voltage	From 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 input	From the controller
IEC protection class	III (protective extra-low voltage)
Protection level	IP 54 (cable entry at the bottom)
EC conformity	EMC to 2014/30/EU
Weight	1.3 kg

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

Supply voltage	From 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 input	From the controller
IEC protection class	III (protective extra-low voltage)
Protection level	IP 54
EC conformity	EMC 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 q_vmin, q_vmax
Signal voltage range 0 - 10 V or 2 - 10 V DC

Diagnostic function

Activation of override controls OPEN, CLOSED, q_vmin, q_vmax, 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

Downloads

product information

Product data sheet control components type XB4

Product data sheet 38 MB pdf

certificates

Konformitätserklärung / Declaration of conformity XB4 - 341C-024-05-V/ST06

341C-024-05-V-ST06_CE_01_2020_07_30_de_en_fr Certificate 40 KB pdf
Konformitätserklärung / Declaration of conformity XB4 - 361C-024-20-V/ST06

361C-024-20-V-ST06_CE_01_2020_07_30_de_en_fr Certificate 40 KB pdf
Konformitätserklärung / Declaration of conformity XB4 - GUAC-DM3

XB4-GUAC-DM3_CE_01_2020_07_30_de_en_fr Certificate 40 KB pdf

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

General information

Technical information

Function, Specification text, Order code

Variants

Technical data

Downloads

product information

Product data sheet control components type XB4

certificates

Konformitätserklärung / Declaration of conformity XB4 - 341C-024-05-V/ST06

Konformitätserklärung / Declaration of conformity XB4 - 361C-024-20-V/ST06

Konformitätserklärung / Declaration of conformity XB4 - GUAC-DM3

TECHNICALLY NECESSARY

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