Universal, dynamic

Universal controller VRD3

UNIVERSAL, DYNAMIC

For different actuators

Modular control components for VAV terminal units

Module selection based on application
Actuators with selected actuator forces

Options

Actuators with safety function for 'damper blade OPEN' and 'damper blade CLOSED' (spring return actuators)

Application

Application

Electronic volume flow controllers of Type Universal (dynamic) are designed for use with VAV terminal units.
Dynamic differential pressure transducer and electronic controller are fitted together in one casing
Actuator or spring return actuator is separate
The output signals of the room temperature controller, central BMS, air quality controller or similar units control the volume flow rate setpoint
Override control by means of switches or relays
Volume flow rate actual value is available as linear voltage signal
Controller parameters are factory set
On-site adjusting is not required

Standard filtration in comfort air conditioning systems allows for use of the controller in the supply air without additional dust protection. Since a partial volume flow is passed through the transducer in order to measure the volume flow rate, please note:

With heavy dust levels in the room, suitable extract air filters must be provided.
If the air is polluted with fluff or sticky particles or contains aggressive media, Universal (dynamic) controllers cannot be used

Description

Parts and characteristics

Sensor for dynamic differential pressure measurements
Separate actuator
Mechanical stops for limiting the damper blade positions
Actuators with overload protection
Release button to allow for manual operation

Technical information

Function, Produktbeziehungen

Principle of operation – Universal 00134465_0

① Differential pressure transducer
② Actuator
③ Volume flow controller
④ Setpoint value signal

Functional description

VAV terminal units control the volume flow in a closed loop, i.e. measurement – comparison – control.

The volume flow rate is determined by measuring the differential pressure (effective pressure). For this purpose the VAV terminal unit is fitted with a differential pressure sensor.

The integral differental pressure transducer transforms the effective pressure into a voltage signal. The volume flow rate actual value is hence available as a voltage signal. The factory setting is such that 10 V DC always corresponds to the nominal volume flow rate (V_nom).

The volume flow rate setpoint value comes from a higher-level controller (e.g. room temperature controller, air quality controller, central BMS) or from switch contacts. Variable volume flow control results in a value between V_min and V_max. 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 integral actuator accordingly.

The volume flow rate parameters V_min and V_max are factory set on potentiometers. Voltage ranges are factory stored in the controller. Changes on the customer's site can easily be carried out using an adjustment device or a notebook with service tool.

Volume flow control

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.
The factory set volume flow rate parameters can be altered by the customer

Variants, MP bus/Analogue, Analogue

Any attachments are to be defined with the order code of the VAV terminal unit.

Universal controller, dynamic, for VAV terminal units

Order code detail	Controller		Actuator		Type of VAV terminal unit
Order code detail	Part number	Type	Part number	Type
B13	M546GA4	VRD3	M466DJ8	NM24A-V	① ② ④
B11	M546GA4	VRD3	M466DG8	SM24A-V	③
B1B	M546GA4	VRD3	M466DR1	NF24A-V (spring return actuator)	① ② ③ ④
B27	M546GA4	VRD3	M466DJ8	NM24A-V	⑤
XC3	M546ED4	GUAC-D3	A00000051738	361C-024-20-V/ST07 (spring return actuator)	① ② ③ ④

① TVR

② TVJ

③ TVT

④ TZ-Silenzio, TA-Silenzio, TVZ, TVA

⑤ TVM

Universal controller VRD3

Application

Electronic volume flow controller VRD3 as Universal controller
Variable air or constant air volume flow control
The flow rate is measured using the dynamic measurement principle
Voltage range for the actual and setpoint value signals 0 – 10 V DC or 2 – 10 V DC
Separate inputs for override controls enable the centralised switching of groups of controllers

Construction

Volume flow controller VRD3 with

B13: Actuator NM24A-V for TVR, TVJ, TZ-Silenzio, TA-Silenzio TVZ, TVA
B11: Actuator SM24A-V for TVT
B1B: Spring return actuator NF24A-V for TVR, TVJ, TVT, TZ-Silenzio, TA-Silenzio TVZ, TVA
B27: Actuator NM24A-V for TVM

Signal voltage range

0: 0 – 10 V DC
2: 2 – 10 V DC with shut-off function (< 0.1 V DC)

Operating modes

E: Single and M: Master

V_min: Minimum volume flow rate
V_max: Maximum volume flow rate

S: Slave operation

V_min: 0 %
V_max: Volume flow rate ratio to the master controller

F: Constant value

V_min: constant volume flow rate
V_max: 100 %

Parameters are factory set. The customer defines the required operating mode and the volume flow rates in the order code at the time of ordering. The jumper for input w is factory set to VRD3.

Commissioning

On-site adjusting is not required
When installing the VAV terminal units it is important to assign each room the correct unit based on the ordered volume flow rates
After successful installation and wiring the controller is ready for use
The volume flow rate parameters V_min and V_max can be adjusted at a later stage using a potentiometer or an adjustment device

Volume flow controller VRD3

Supply voltage (AC)	24 V AC ± 20 %, 50/60 Hz
Supply voltage (DC)	24 V DC −10/+20 %
Power rating (AC)	without actuator max. 3.5 VA
Power rating (DC)	without actuator max. 2 W
Setpoint value signal input	0 – 10 V DC, R_a > 100 kΩ
Actual value signal output	0 – 10 V DC, 0.5 mA max.
IEC protection class	III (protective extra-low voltage)
Protection level	IP 40
EC conformity	EMC according to 2014/30/EU
Weight	0.440 kg

Actuators NM24A-V and NM24A-V-ST

Supply voltage	from the controller
Power rating (AC)	6 VA max.
Power rating (DC)	3.5 W max.
Torque	10 Nm
Running time for 90°	150 s
Control signal	from the controller
IEC protection class	III (protective extra-low voltage)
Protection level	IP 54
EC conformity	EMC according to 2014/30/EU
Weight	0.710 kg

Actuators SM24A-V and SM24A-V-ST

Supply voltage	from the controller
Power rating (AC)	6 VA max.
Power rating (DC)	4 W max.
Torque	20 Nm
Running time for 90°	150 s
Control signal	from the controller
IEC protection class	III (protective extra-low voltage)
Protection level	IP 54
EC conformity	EMC according to 2014/30/EU
Weight	0.910 kg

Spring return actuators NF24A-V and NF24A-V-ST

Supply voltage	from the controller
Power rating (AC)	9 VA max.
Power rating (DC)	6.5 W max.
Torque	10 Nm
Running time for 90°	200 – 300 s
Spring return time	< 20 s
Control signal	from the controller
IEC protection class	III (protective extra-low voltage)
Protection level	IP 54
EC conformity	EMC according to 2014/30/EU
Weight	1.91 kg

Universal controller GUAC-D3

Application

Electronic volume flow controller GUAC-D3 as Universal controller
Variable air or constant air volume flow control
The flow rate is measured using the dynamic measurement principle
Voltage range for the actual and setpoint value signals 0 – 10 V DC or 2 – 10 V DC

Construction

XC3: Volume flow controller GUAC-D3 with spring return actuator 361C-024-20-V/ST07 for TVR, TVJ, TVT, TZ-Silenzio, TA-Silenzio, TVZ, TVA

Signal voltage range

0: 0 – 10 V DC
2: 2 – 10 V DC with shut-off function (< 0.8 V DC)

Operating modes

E: Single and M: Master

V_min: Minimum volume flow rate
V_max: Maximum volume flow rate

S: Slave operation

V_min: 0 %
V_max: Volume flow rate ratio to the master controller

F: Constant value

V_min: constant volume flow rate
V_max: 100 %

Parameters are factory set. The customer defines the required operating mode and the volume flow rates in the order code at the time of ordering.

Commissioning

On-site adjusting is not required
When installing the VAV terminal units it is important to assign each room the correct unit based on the ordered volume flow rates
After successful installation and wiring the controller is ready for use
The volume flow rate parameters V_min and V_max can be adjusted at a later stage using a potentiometer or an adjustment device

Volume flow controller GUAC-D3

Supply voltage (AC)	24 V AC ± 20 %, 50/60 Hz
Supply voltage (DC)	24 V DC ± 20 %
Power rating (AC)	without actuator max. 1.2 VA
Power rating (DC)	without actuator max. 0.6 W
Setpoint value signal input	0 – 10 V DC, R_a > 100 kΩ
Actual value signal output	0 – 10 V DC, 0.5 mA max.
IEC protection class	III (protective extra-low voltage)
Protection level	IP 42
EC conformity	EMC according to 2014/30/EU

Spring return actuator 361C-024-20-V

Supply voltage	from the controller
Power rating (AC)	10 VA max.
Power rating (DC)	8 W max.
Torque	20 Nm
Running time for 90°	150 s
Spring return time	< 15 s
Control signal	from the controller
IEC protection class	III (protective extra-low voltage)
Protection level	IP 54 (cable entry at the bottom)
EC conformity	EMC according to 2014/30/EU
Weight	1.8 kg

Downloads

product information

Product data sheet type Universal, dynamic

Product Data Sheet 2,5 MB pdf

operation manuals

Control engineering information

M/VRD3/EN/2/2010/10 Electronic controller VRD3 160 KB pdf
Installation instructions

A00000066402/01/2018 Type Universal, dynamic 1,4 MB pdf

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UNIVERSAL, DYNAMIC

For different actuators

Application

Description

Technical information

Function, Produktbeziehungen

Variants, MP bus/Analogue, Analogue

Downloads

product information

Product data sheet type Universal, dynamic

operation manuals

Control engineering information

Installation instructions

TROX Services

TECHNICALLY NECESSARY

STATISTICS AND WEBSITE ANALYSIS

CONVENIENCE AND PERSONALISATION

FOR THE BEST TROX EXPERIENCE