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Compact controller XS0 for TVE and TVE-Q
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Bus interface Modbus RTU

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Volume flow controller – static transducer

Volume flow controller – static transducer

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Control component for type TVE

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VAV control unit variant TVE-Q-P1 (powder-coated)

Control component for type TVE-Q

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XS0

Control component with static transducer and Modbus RTU interface

Compact unit for VAV control unit TVE and TVE-Q

  • Regulator, static differential pressure transducer and actuator in one housing
  • Use in ventilation and air-conditioning systems, for clean and polluted air
  • Simple terminal connection, no connection box required
  • Volume flow rates qvmin and qvmax factory preset and stored in the controller as changeable parameters
  • High data transparency through standardised bus communication Modbus RTU, RS485
  • Setpoint presets, override controls, parameter adjustment via Modbus registers
  • Integrated display for volume flow rate display, operating status display and setting of operating parameters
  • Service access for manual adjustment devices and PC configuration software

Allgemeine Informationen

Application

  • Complete control units for VAV control units types TVE and TVE-Q
  • Static differential pressure transducer, electronic controller, and actuator are fitted together in one casing
  • Static pressure transmitter for extended application range with clean and polluted air, e.g. in exhaust air areas with dust, lint, sticky, moist or slightly aggressive components
  • Choice of various control options based on setpoint value default setting
  • Volume flow rate control is based on setpoint values received from room temperature controller, central BMS, air quality controller or other devices as an analogue signal or via communication interface
  • Override controls for activating qvmin, qvmax, shut-off, open position via Modbus register or switch or relay possible (depending on interface configuration)
  • The actual volume flow rate is available as a network data point or as a linear voltage signal
  • Damper blade position is available as a network data point


Control strategy

  • The volume flow controller works independently 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.
  • Flow rate range is set in the controller at the factory (qvmin: minimum volume flow rate, qvmax: maximum volume flow rate)
  • Operating parameters are specified via the order code and set in the factory


Operating modes

  • Modbus (M): Setpoint specification via Modbus registers
  • Analogue - variable operation (V): Setpoint input via analogue interface, signal voltage range corresponds to qvmin – qvmax

  • Analogue - fixed value operation (F): no setpoint signal required, setpoint corresponds to qvmin


Interface

Communication interface

  • Modbus RTU, RS485
  • Data points see Modbus register list

Analogue interface with adjustable signal voltage range

  • Analogue signal for volume flow rate setpoint value
  • Analogue signal for actual volume flow rate (factory setting)
  • Alternatively: analogue signal for damper position (on-site conversion required)

Note

  • Interface type preset at the factory according to operating mode
  • Can be adapted on site via communication interface (Modbus register) or display operation


Signal voltage ranges



When using the analogue interface

  • 0 – 10 V DC
  • 2 – 10 V DC



Parts and characteristics

  • Transducer for static pressure measurements
  • Overload protection
  • Terminals with cover
  • Display and operating elements for simple menu guidance
  • Menu guidance for adjusting operating parameters and communication interface
  • Service interface


Construction

  • TR0VM-024T-05I-DS10-MB
  • Can only be used for TVE and TVE-Q


Commissioning

  • Due to the volume flow rates set in the factory, always ensure that the control units are only installed in the specified locations
  • Analogue interface: ready for use after installation and wiring
  • Modbus interface: additional commissioning steps required
  • Operating parameters can be adjusted by the customer (using the display, adjustment device or Modbus register)
  • Zero point correction not required



Useful additions

Adjustment device type GUIV3-M  (order code AT-VAV-G3)



Information technique

Function, Specification text, Order code

  • Function
  • SPECIFICATION TEXT
  • ORDER CODE
XS0_dia_01ai.png

1 Differential pressure transducer
2 Actuator
3 Volume flow controller
4 Setpoint value via BACnet, Modbus or analogue signal
5 Shaft with effective pressure channel

VAV terminal units control the volume flow in a closed loop, i.e. measurement - comparison - correction. This is done via a differential pressure sensor. An integral differential pressure transducer converts the effective pressure into a voltage signal. The factory setting is such that 10 V DC correspond to the nominal volume flow rate (qvnom). The volume flow rate setpoint value defaults from 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 integral actuator accordingly.


Category

  • Compact controller for volume flow rate
  • Control according to a constant or variable volume flow rate setpoint
  • Electronic controller for applying a reference value and capturing an actual value for integration in the central building management system
  • The actual value is based on the nominal volume flow rate such that commissioning and subsequent adjustment are simplified
  • Stand-alone operation or integration in central building management system




Application

  • Static transducer for contaminated air in ventilation and air conditioning systems
  • Modbus commands (Modbus operating mode)
  • External switch contacts/wiring (with analogue interface)




Supply voltage


  • 24 V AC / DC




Actuator

Integral; slow-running (running time 100 s for 90°)




Installation orientation

  • Not critical




Interface/signalling

  • Modbus RTU (RS-485) or alternatively analogue signals (0 – 10V or 2 – 10V DC) can be used
  • Interface type set in the factory on the basis of the order code



Connection

  • Terminals with rubber cap, therefore no additional terminal box required
  • Double terminal for supply voltage for easy further wiring of up to 3 controllers



Interface information


  • Modbus: including volume flow rate setpoint value and actual value signal, damper blade position, override control
  • Alternatively: volume flow rate setpoint value and actual value signal as analogue signal




Special functions

  • Clearly visible external indicator light for indicating the functions: Set, not set, and power failure
  • Display for actual values, parameter setting and for test functions
  • Activation qvmin, qvmax, closed, open by: Modbus (with Modbus control), external switch contacts (with analogue control)




Parameter setting

  • Parameters specific to VAV terminal unit are set at the factory
  • Operating values: qvmin, qvmax and interface type are set in the factory
  • Subsequent adjustment via display and control element directly on the device or with optional tools: adjustment device, PC software (cable connection in each case), in Modbus mode also via Modbus register access




Factory condition

  • Electronic controller factory-mounted on the terminal unit
  • Factory set parameters
  • Functional test under air; certified with sticker


TVED / 200 / D2 / XS0 / V0 / qvminqvmaxm³/h
|||||||||
12567891011
1 Type
TVE VAV terminal unit
 
2 Acoustic cladding

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


 
7 Attachments (control component)
XS0  Compact controller with static transducer, Modbus RTU, display
 
8 Operating mode
F Constant value (a setpoint value)
V  variable (setpoint value range)
M Modbus RTU
 
9 Signal voltage range  (only with operating mode F, V)
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, M)
qvmax  (only with operating mode V, M)
 
11 Volume flow unit
m³/h
l/s


Order example: TVE/100/D2/XS0/M/20-350 m³/h

Acoustic claddingWithout
MaterialGalvanised sheet steel
Nominal size100 mm
AccessoriesDouble lip seal both sides
AttachmentCompact controller Modbus, static transducer
Operating modeModbus RTU
Volume flow rate20 – 350 m³/h

 

Variants

  • Varianten

  • TVE

Technical data

  • Technical data

Compact controller for VAV terminal units


Part number

Type of installation component

VAV terminal units

A00000069231TR0VM-024T-05I-DS10-MBTVE, TVE-Q


Compact controller TR0VM-024T-05I-DS10-MB

Type of measurement/installation orientationstatic measuring principle, position-independent
Supply voltage (AC)24 V AC, ± 20 %, 50/60 Hz
Supply voltage (DC)24 V DC ± 20 %
Power rating (AC)TVE NW 100 - 160: maximum 4 VA
TVE NW 200 - 400: maximum 7 VA
TVE-Q up to height 200: maximum 4 VA
TVE-Q from height 300: maximum 7 VA
Power rating (DC)TVE-Q up to height 200: maximum 2.5 W
TVE-Q from height 300: maximum 4 W
TVE NW 100 - 160: maximum 2.5 W
TVE NW 200 - 400: maximum 4 W
Power consumption (when running/when idle)

1 W

Run time for 90°100 s
Setpoint value signal input (analogue optional)0 - 10 V DC, input resistance > 100 kΩ
or 2 - 10V DC Ra> 50 kΩ
Actual value signal output0 - 10 V DC or 2 - 10 V DC; maximum 5 mA
IEC protection classIII (Protective extra-low voltage)
Protection levelIP 42 (with attached terminal cover)
EC conformityEMC to 2014/30/EU
Bus connectionModbus RTU, RS485
Number of nodes128
Adjustable communication parameters1200 – 115,200 Bd
Start bit: 1
Data bits: 8
Stop bits: 1 or 2
Parity: None, Even, Odd
Setpoint / actual value interface (Modbus)via Modbus register list
Cable terminationexternally required

 

 


,

Interface configuration of the control component

Depending on the setting, the Modbus communication interface or the analogue interface for the setpoint value specification of volume flows are available here. The so-called interface mode is preset at the factory according to the order key and can be adjusted on site by setting via the menu navigation or the Modbus registers.

,

Typical interface configuration

XS0

Setpoint value default setting via:Actual values via:corresponds to order key optionMenu configuration (Mode)
Analogue operationanalogue 0 - 10 Vanalogue 0 - 10 VV or FCA0
Analogue operationanalogue 2 - 10 Vanalogue 2 - 10 VV or FCA2
Modbus operationModbus register setpointModbus register actual value or analogue 2 - 10 VMCB

Through special configuration of the Modbus register Interface-Mode, mixed operations of Modbus and analogue operation can be configured. See the description of the interface mode in Modbus register 122.


 


 


Supplementary use of the Modbus interface in analogue mode


In analogue mode, only the setpoints at the analogue input are evaluated by the controller. A setpoint specification via the Modbus interface (register 0) is not possible. Any write attempts are acknowledged with an error response. Regardless of the selected interface configuration, however, the other Modbus registers can be used. In this way, the operating values of the actual volume flow rate and damper position can be read out from a higher-level building management system (BMS) with local control using an analogue signal via a connected Modbus, or central override controls can also be triggered.

,

,

Communication interface Modbus RTU (operating mode M)

Register

MeaningAccess rightStorage

0

Volume flow setpoint [%]
Reference: Vmin – Vmax (qvmin – qvmax)
Resolution: 0 – 10000
Volume flow setpoint: 0.00 - 100.00%
R, WRAM
1Activation of an override control; 0 = none; 1 = Open; 2 = Close; 3 = Vmin; 4 = VmaxR, WRAM
2Command triggering 0 = none; 1 = adaptation; 2 = test run; 4 = controller resetR, WRAM
4Current damper blade position [%]
Resolution: 0 – 10000
Damper blade position: 0.00 – 100.00%
RRAM
5Current damper blade position [°]
Reference: without decimal places
RRAM
6Current actual volume flow [%]
Resolution: Vnom
Resolution: 0 – 10000
Actual volume flow rate: 0.00 - 100.00%
RAM
7Actual volume flow rate in volume flow rate unit [m³/h], [l/s], [cfm] according to register 201RRAM
8Voltage at analogue input Y [mV]RRAM

20

Volume flow setpoint
in volume flow unit [m³/h], [l/s], [cfm] acc. to register 201

R, W

RAM

103Firmware version

R

Flash

104Status information
(Bit = 1 active; Bit = 0 inactive)
Bit 5 mechanical overload
Bit 8 internal activity e.g. test run, adaptation
Bit 10 bus timeout monitoring triggered
RRAM
105Operating range limitation: Operating parameter Vmin (qvmin) [%]
Resolution: Vnom
Resolution: 0 – 10000
Vmin: 0.00 – 100.00%
R, WEEPROM
106Operating range limitation: Operating parameter Vmax (qvmax) [%]
Resolution: Vnom
Resolution: 0 – 10000
Vmax: 0.00 – 100.00%
R, WEEPROM
108Behaviour on bus failure (bus time-out); 0 = nothing; 1 = closed; 2 = open; 3 = qvmin; 5 = qvmaxR, WEEPROM
109Setting bus time-out [s]R, WEEPROM
120Definition of operating range: operating parameters Vmin (qvmin) in volume flow rate unit [m³/h], [l/s], [cfm] according to register 201R, WEEPROM
121Definition of operating range: operating parameters Vmax (qvmax) in volume flow rate unit [m³/h], [l/s], [cfm] according to register 201R, WEEPROM
122Interface definition (Interface mode) For assignment see separate tableR, WEEPROM

130 *

Modbus address (device address)R, WEEPROM
201Volume flow rate unit 0 = l/s; 1 = m³/h; 6 = cfmR, WEEPROM
231Setting of mode:
Bit 0 defines the characteristic of the analogue interface.
Bit 0 = 0 characteristic: 0 – 10 V
Bit 0 = 1 characteristic: 2 – 10 V
Bit 4 defines the actual value signal as actual volume flow rate or damper position.
Bit 4 = 0 Actual volume flow rate
Bit 4 = 1 Damper blade position
All other bits must not be changed.
R, WEEPROM

233

Nominal flow rate [m3 /h] (Vnom):
Displays the parameterised nominal volume flow rate

R

EEPROM

568

Modbus parameter kit communication settings: baud rate, parity, stop bits, assignment see separate table

R, WEEPROM
569Modbus communication settings: Modbus Response Time = 10 ms + delay; with delay= 3 ms × register value 0 - 255R, WEEPROM
572Setting of switching threshold for override control CLOSE via control signal for signal voltage range 2 – 10 V:
Setting range 0.5 V – 1.8 V
Default value 0.8V (register value = 20)
Resolution: 1 setting unit = 40mV
R, WEEPROM

* Factory setting: Modbus address 1


R = register readable


R,W = register readable and writable


RAM = register value volatile


EEPROM = register value not volatile, but permanently stored (maximum 1 million write operations)


 


Note:
All registers from register number 100 onwards with storage in the EEPROM are not designed for cyclical write access, e.g. by the building management system. Cyclic write operations are only permitted on registers with storage in RAM.


Detailed information on register 122 (communication interface setpoint/actual value - interface mode)

Register value

Signal inputFeedback signal

0

analogue (0) 2 - 10 V(0)2 – 10 V
1Modbus via Register 0(0)2 – 10 V
2Modbus via Register 0Register 10
3

qv

Modbus-RTU-Schnittstelle

 Detailed information on register 568 (Modbus communication parameters)


Register value

Display setting valueBaud rateParityStop bits

0

11200None2
121200straight1
231200odd1
342400None2
452400straight1
562400odd1
674800None2
784800straight1
894800odd1
9109600None2
10119600straight1
11129600odd1
121319200None2
131419200straight1
141519200odd1

15 **

16

38400

None

2

161738400straight1
171838400odd1
18191200None1
19202400None1
20214800None1
21229600None1
222319200None1
232438400None1
242576800None1
2526115200None1
262776800None2
272876800straight1
282976800odd1
2930115200None2
3031115200straight1
3132115200odd1


** Factory setting: Modbus communication parameters

Commissioning

Note on the type of static transmitter used


  • Mounting position any
  • Zero point adjustment not required

After installation, wiring and connection of the supply voltage


  • When using the Modbus interface: Set Modbus communication parameters via the integrated menu, then the air terminal unit is ready for operation
  • Setpoint value default setting via Modbus register
  • When using the analogue interface: air terminal unit is immediately ready for use
  • Only briefly remove the protective cap of the control component during wiring

 

 


Observe volume flow control ranges


  • TVE: 4 - 100 % of qvnom
  • TVE-Q: 10 - 100 % of qvnom
  • In particular, do not fall below the values for the minimum volume flow of the control unit

Range of display functions


 

Display functions


  • Actual volume flow rate (unit optionally m³/h, l/s, cfm)
  • 3-character display with positional notation
  • Status and error display for various operating states, including display of activated override control and diagnosis function

 

 


Parameter setting


  • Adjustment option for the unit of the volume flow rate display m³/h, l/s, cfm
  • Adjustment option for the operating range qvmin, qvmax
  • Selection of the interface configuration Modbus or analogue including signal voltage range 0 – 10 V or 2 – 10 V DC
  • Adjustment option for Modbus communication settings (address, baud rate, stop bits, parity)


 


Diagnosis functions


  • Activation of a test run
  • Activation of override controls Open, Closed, qvmin, qvmax, motor stop (observe prioritisation)
  • Display of the voltage value on the analogue input

Use and description of the display

Pressing the LED button (< 3 s) selects the next menu item (1) - (6). The selected menu item can be changed by pressing the LED push button for more than 3 s. Changing is done with the rotary selector switch. Pressing the LED push button again (< 3 s) confirms the selected value. If no entry is made for ≥ 60 s, the system returns to menu item 1.

Table 1: Description of the menu items
① FlowDisplay of actual values or operating states. Setting of the volume flow unit m³/h, l/s, cfm.
② VminSetting qvmin
③ VmaxSetting qvmax

④ DIAG

Display of control signal and feedback signal alternately in [V],
Activation of override controls for test and diagnostic purposes:
tst = test drive
oP = damper open
cL = damper closed
Lo = qvmin
Hi = qvmax
St = motor stop
oFF = override control off
000 = Display firmware version

⑤ MODE

Selection of the operating mode:
CA0 = Setpoint input and actual value return via analogue interface (0 - 10 V)
CA2 = Setpoint input and actual value return via analogue interface (2 - 10 V)
CB2 = Setpoint input and actual value return via Modbus - optional actual value return via (2 - 10 V)

⑥ COM

Setting the Modbus address: 1 - 247

and the baud rate, parity, stop bits: 1 (b1) - 32 (b32)

Note on MODE setting:
For the control component XM0-J6 or XS0-J6, only the mode setting CB2 is useful, as setpoint input and actual value return as analogue signal are not available on the RJ12 connection socket of these control components.

Description of status LEDs and error messages

LED flashing signalStatusDisplay

no power supply connected

Service tool plugged in.
On-site network connection deactivated.
Forced controls from the service tool have priority

Undervoltage detected.
Supply voltage outside the tolerance range.
Control function not guaranteed

TROX service technicians provide information.
Incomplete parameterisation was detected during power-on/reset *

Drive overload detected (block) *

Synchronisation drive after Power Up *

Test mode enabled *

Overpressure sensor (Overpressure) *

Setpoint or forced control position not yet reached (display changes between e.g. Hi = high and actual value) *

Forced control position reached
(display changes between e.g. Hi = High and actual value) *

Offset: Is signalled as long as the drive does not rotate to readjust the setpoint value *

Notes:

  1. The signal spans 2 seconds. 1 = LED is illuminated, 0 = LED is not illuminated
  2. For service tool plugged in (display: Pc) and undervoltage detected (display: Lou), no special flashing signal appears on the LED button. Instead, one of the operating states marked with an asterisk (*) is displayed.


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