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Bus interface MP-Bus

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TVR with attachment BC0

 

 

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X-AIRCONTROL zone module MP-Bus

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BC0

Control components for VAV terminal unit with dynamic transducer and analogue and MP-Bus interface

Compact device for use with VAV terminal units

  • Controller, effective pressure transducer and actuator in one casing
  • Use in ventilation and air conditioning systems, only with clean air
  • Operation either with analogue interface or MP-Bus communication
  • Suitable for constant and variable volume flow rates and qvmin/qvmax switching
  • Activation of override controls, e.g. via external wiring
  • Volume flow rates qvmin and qvmax are set in the factory and saved in the controller
  • Modification of operating parameters by hand-held setting unit, PC software as well as smartphone and tablet app (TROX FlowCheck app)
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General information

Application

  • All-in-one control devices for VAV terminal units
  • Dynamic effective pressure transducer, control electronics and actuator combined in a single casing
  • For use with clean air only
  • Standard filtration in comfort conditioning systems allows for using the controller in the supply air without additional dust protection.
  • Choice of various control options based on setpoint value default setting
  • The room temperature controller, central BMS, air quality controller or similar units control the variable volume flow control by specifying the setpoint values via a communication interface or analogue signal
  • Override controls for activating qvmin, qvmax, shut-off, OPEN position via MP-Bus or switch / relay possible
  • Use service tool ZTH-EU, PC-Tool and the TROX FlowCheck app to configure the controller and the communication parameters

 

With heavy dust levels in the room

  • Install suitable extract 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 an expansion module with static effective pressure transducer, e.g. XD0 (analogue interface) or BUSN (with MP-Bus interface)



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
  • The flow rate range for the controller is set in the factory
    • qvmin: minimum volume flow rate
    • qvmax: maximum volume flow rate
  • Operating parameters and signal voltage ranges are set in the factory according to the order code. They can later be changed with the service tools.


Interface



Communication interface for the volume flow rate setpoint and actual value, damper blade position and error status

  • Analogue interface with adjustable signal voltage range
  • Analogue signal for volume flow rate setpoint value
  • Analogue signal for volume flow rate actual value (factory setting), alternatively: analogue signal for damper blade position (adjustment by others required)

Alternatively

  • MP-Bus communication interface can be activated by others
  • Communication interface can be set via service tools

 

 




    Operating modes



    • Variable or constant value

    Variable operation (V)

    • Setpoint value default setting via analogue interface or MP-Bus
    • Signal voltage range corresponds to qvmin – qvmax

    Constant value mode (F)

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



    Operating parameters



    • qvmin  = 0 – 100% of the nominal volume flow rate qvNom can be set
    • qvmax  = 20 – 100% of the nominal volume flow rate qvNom can be set



    Signal voltage ranges



    • 0 – 10 V DC
    • 2 – 10 V DC



    Parts and characteristics

    • Effective pressure transducer for dynamic measurements (dynamic transducer)
    • Overload protection
    • Actuator release button
    • Shaft connection with clamping device or positive locking
    • Connecting cable with 4 wires, approx. 0.9 m
    • Service interface for the connection of service tools
    • NFC interface for using the TROX FlowCheck app
    • Indicator lights for indicating the operating mode
    • Supply voltage and communication not galvanically isolated


    Construction

    • Type LMV-D3L-MP-F TR for VAV terminal unit LVC
    • Type LMV-D3-MP-F TR for VAV terminal unit TVR
    • Type LMV-D3-MP TR for VAV terminal units TZ-Silenzio, TA-Silenzio, TVZ, TVA, TVM
    • Type NMV-D3-MP TR for VAV terminal unit TVJ
    • Type NMV-D3-MP TR for VAV terminal unit TVT up to size 1000 × 300 or 800 × 400
    • Type SMV-D3-MP TR for VAV terminal unit TVT from size 900 × 400


    Commissioning

    • Due to the volume flow rates set at the factory, always ensure that the terminal units are only installed at the specified locations
    • Operating parameters can be adjusted by others (service tools)
    • After successful installation and wiring, the controller is ready for use via the analogue interface
    • MP-Bus: additional commissioning steps required


    Useful additions

    Service tools:

    • Adjustment device ZTH-EU (order code AT-VAV-B)
    • PC-Tool
    • TROX FlowCheck app

Technical information

Function, Specification text, Order code

  • Function
  • SPECIFICATION TEXT
  • ORDER CODE
      Principle of operation Funktionsgrafik_BM0ai.png

① Effective pressure transducer

② Actuator

③ Volume flow controller

④ Setpoint value signal

 


VAV terminal units control the volume flow in a closed loop, i.e. measurement – comparison – correction. The volume flow rate is measured via the effective pressure. This is done via an effective pressure sensor. An integrated differential pressure transducer converts the effective pressure into a voltage signal. The volume flow rate actual value is available as a voltage signal. The factory setting is such that 10 V DC always corresponds to the nominal flow rate (qvNom). The volume flow rate setpoint value comes 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 qmax. It is possible to override the room temperature control, e.g. by a complete shut-off of the duct. The controller compares the differential pressure setpoint value to the actual value and controls the actuator accordingly if there is a difference.


Category

  • Compact controller for volume flow rate



Application

  • Control of a constant or variable volume flow rate setpoint
  • Electronic controller for applying a reference value and capturing an actual value signal
  • The actual value signal relates to the nominal volume flow rate so that commissioning and subsequent adjustment are simplified
  • Stand-alone operation or integration with a central BMS


Area of application

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



Actuator

  • Integrated; slow running (runtime 110 – 150 s for 90°)



Installation orientation

  • Either direction



Connection

  • Connecting cable with 4 wires



Supply voltage

  • 24 V AC/DC



Interface/signalling

  • Analogue signal 0 – 10 V DC or 2 – 10 V DC or Belimo MP-Bus



Interface information

  • Analogue: Volume flow rate setpoint and actual value signal
    • Actual value signal of volume flow rate set at the factory
    • Actual value signal can be reconfigured at the damper blade position by others
  • MP-Bus: Volume flow rate setpoint and actual value, damper blade position, error status, etc.



System connections

MP-Bus for optional extensions: 

  • Suitable for TROX X-AIRCONTROL zone module X-AIR-ZMO-MP
  • Gateways for Modbus, BACnet, EIB, e.g., Belimo UK24xxx 
  • Fan optimiser, e.g., Belimo COU24-A-MP
  • In MP-Bus mode: Integration of a sensor or switch contact into the MP-Bus network 



Special functions

  • Activation of qvmin, qvmid, qvmax, closed, open by external switch contacts/circuitry or MP-Bus
  • Optional activatable operating modes: open loop: actuator with air flow measurement



Parameter setting

  • Parameters specific to the VAV terminal unit are factory-set
  • Operating values qvmin, qvmax factory-set
  • Signal characteristic is factory-set


Subsequent adjustment using optional tools: 



  • Adjustment device, PC software (wired in each case)
  • FlowCheck app (wireless via integrated NFC interface)

Control component BC0 (shown together with TVR as an example)
TVRDP1/200/D2/BC0/V0/500 – 1200 [m³/h]
||||||||||
123456791011
1 Type
TVR
VAV terminal unit

2 Acoustic cladding
No entry: none
D With acoustic cladding

3 Material
No entry: galvanised sheet steel
P1 Powder-coated RAL 7001 (silver grey)
A2 Stainless steel construction

4 Duct connection
No entry: push-fit, suitable for ducts according to EN 1506; with groove for optional lip seal
FL Flanges on both ends

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

6 Accessories

No entry: without accessories
D2 Double lip seal both ends (push-fit only)
G2 Matching flanges for both ends (only with FL)

7 Attachments (control components)
BC0 Compact controller with dynamic transducer and both analogue and MP bus interfaces

9 Operating mode
F
Constant value mode (one setpoint value, no external switch contact)
V Variable operation (adjustable setpoint value range)

10 Signal voltage range
0 0 – 10 V DC
2 2 – 10 V DC

11 Operating values for factory setting
Volume flow rate [m3/h or l/s]

Depending on operating mode
F: qvconst
V: qvmin – qvmax


Order example: TVR-D-P1/200/D2/BC0/V0/500-1200[m³/h]

TypeTVR
Acoustic claddingWith acoustic cladding
MaterialPowder-coated RAL 7001 (silver grey)
Duct connectionPush-fit, suitable for ducts according to EN 1506; with groove for optional lip seal
Nominal size [mm]200
AccessoriesDouble lip seal both ends
Attachments (control components)BC0 – Compact controller with dynamic transducer and both analogue and MP bus interfaces
Operating modeVariable operation
Signal voltage range0 – 10 V DC
Operating values for factory setting500 – 1200 [m3/h]

Variants

  • VARIANTS


 

 



Product details, Technical data

  • PRODUCT DETAILS
  • TECHNICAL DATA

Compact controllers for VAV terminal units


VAV terminal units

TypePart number

LVC

LMV-D3L-MP-F TR

A00000043143

TVR

LMV-D3-MP-F TR

A00000043141

TZ-Silenzio, TA-Silenzio, TVZ, TVA

LMV-D3-MP TR 1

A00000043140

TVM

2 × LMV-D3-MP TR

A00000043140

TVJ

NMV-D3-MP TR

A00000043142

TVT up to 1000 x 300 or 800 x 400

NMV-D3-MP TR

A00000043142

TVT from 900 × 400

SMV-D3-MP TR

A00000091878

Note: 1 LMV-D3-MP TR with clamping device can be used as a replacement part for LMV-D3-MP-F TR with positive lock connection

Compact controllers BC0, LMV-D3L-MP-F TR

Measurement principle/installation orientationDynamic measurement principle, position-independent

Nominal voltage

AC/DC 24 V
Nominal frequency50/60 Hz

Functional range

19.2 – 28.8 V AC or 21.6 – 28.8 V DC

Power consumption – when running2 W
Power rating3.5 VA
Self-consumption (idle state)

1 W

Adjustable communication parameters for MP-Bus

Address: 1-8 (up to 8 MP-Bus nodes)
Addressing: must be performed by others, e.g., with adjustment device or TROX FlowCheck app.
Topology: star, ring, line, tree or mixed forms are permitted.
Terminal resistor: not required


Torque5 Nm
Run time for 90°120 – 150 s
Setpoint value signal input0 – 10 V DC or 2 – 10 V DC, input resistance > 100 kΩ
Actual value signal output0 – 10 V DC or 2 – 10 V DC; max. 5mA

Connections

Connecting cable: approx. 0.9 m, 4 x 0.75 mm²
IEC protection classIII (protective extra-low voltage)
Protection level

IP 54

EC conformityEMC to 2014/30/EU, low voltage to 2014/35/EU
Weight

0.5 kg


 



Compact controllers BC0, LMV-D3-MP TR and LMV-D3-MP-F TR

Measurement principle/installation orientationDynamic measurement principle, position-independent

Nominal voltage

AC/DC 24 V
Nominal frequency50/60 Hz

Functional range

19.2 – 28.8 V AC or 21.6 – 28.8 V DC

Power consumption – when running2 W
Power rating4 VA
Self-consumption (idle state)

1 W

Adjustable communication parameters for MP-Bus

Address: 1-8 (up to 8 MP-Bus nodes)
Addressing: must be performed by others, e.g., with adjustment device or TROX FlowCheck app.
Topology: star, ring, line, tree or mixed forms are permitted.
Terminal resistor: not required


Torque

5 Nm

Run time for 90°

110 – 150 s

Setpoint value signal input0 – 10 V DC or 2 – 10 V DC, input resistance > 100 kΩ
Actual value signal output0 – 10 V DC or 2 – 10 V DC; 0.5 mA max.

Connections

Connecting cable: approx. 0.9 m, 4 x 0.75 mm²
IEC protection classIII (protective extra-low voltage)
Protection level

IP 54

EC conformityEMC to 2014/30/EU
Weight

0.5 kg


Compact controllers BC0, NMV-D3-MP TR and NMV-D3-MP-F TR

Measurement principle/installation orientationDynamic measurement principle, position-independent

Nominal voltage

AC/DC 24 V
Nominal frequency50/60 Hz

Functional range

19.2 – 28.8 V AC or  21.6 – 28.8 V DC

Power consumption – when running3 W
Power rating5 VA
Self-consumption (idle state)1.5 W
Adjustable communication parameters for MP-Bus

Address: 1-8 (up to 8 MP-Bus nodes)
Addressing: must be performed by others, e.g., with adjustment device or TROX FlowCheck app.
Topology: star, ring, line, tree or mixed forms are permitted.
Terminal resistor: not required


Torque

10 Nm

Run time for 90°

110 – 150 s

Setpoint value signal input0 – 10 V DC or 2 – 10 V DC, input resistance > 100 kΩ
Actual value signal output0 – 10 V DC or 2 – 10 V DC; 0.5 mA max.

Connections

Connecting cable: approx. 0.9 m, 4 x 0.75 mm²
IEC protection classIII (protective extra-low voltage)
Protection level

IP 54

EC conformityEMC to 2014/30/EU
Weight

0.7 kg


 


Compactregler BC0, SMV-D3-MP TR

Measurement principle/installation orientationDynamic measurement principle, position-independent

Nominal voltage

AC/DC 24 V
Nominal frequency50/60 Hz

Functional range

19.2 – 28.8 V AC or  21.6 – 28.8 V DC

Power consumption – when running3 W
Power rating5,5 VA
Self-consumption (idle state)1.5 W
Adjustable communication parameters for MP-Bus

Address: 1-8 (up to 8 MP-Bus nodes)
Addressing: must be performed by others, e.g., with adjustment device or TROX FlowCheck app.
Topology: star, ring, line, tree or mixed forms are permitted.
Terminal resistor: not required


Torque

10 Nm

Run time for 90°

110 – 150 s

Setpoint value signal input0 – 10 V DC or 2 – 10 V DC, input resistance > 100 kΩ
Actual value signal output0 – 10 V DC or 2 – 10 V DC; 0.5 mA max.

Connections

Connecting cable: approx. 0.9 m, 4 x 0.75 mm²
IEC protection classIII (protective extra-low voltage)
Protection level

IP 54

EC conformityEMC to 2014/30/EU
Weight

0.7 kg


 


Commissioning


  • On-site adjusting is not required
  • As the volume flow rates are factory-set, the terminal units have to be installed at the specified locations
  • After successful installation and wiring, the controller is ready for use by using the analogue interface
  • Comply with the volume flow rate control ranges of the VAV terminal units, do not set a volume flow rate which is below the minimum flow rate
  • For operation with MP-Bus interface: additional commissioning steps such as assigning a participant address are necessary

 


LED display and operation
Adjustment LED (green):


  • Off: No supply voltage
  • On: Operation
  • Press key: Triggering of the rotation angle adjustment


Address LED (yellow):


  • Off: Normal operation
  • Flickering: MP communication active
  • On: Adjustment or synchronisation in progress
  • Flickering: Request for addressing from the MP master
  • Press key: Confirmation of addressing 


Service tool range of functions


Function/parameterisation

TROX FlowCheck app

PC-Tool

ZTH-EU

setting qvmin, qvmax

R, WR, WR, W
Mode, signal voltage range 0 – 10 V, 2 – 10 V DCR, WR, WR, W
Carry out override controls

Yes

YesYes
MP-Bus addressR, WR, WR, W
Trend display

Yes

Yes

-


R,W = Read and write access.

R = Read only

W = Write only

- = Function is not available with this service tool.


 


Product details

Analogue interface 0 – 10 V DC or 2 – 10 V DC
The analogue interface can be set for signal voltage range 0 – 10 V DC or 2 – 10 V DC using the service tools. The assignment of the setpoint value or actual value of the volume flow rate to the voltage signal is shown in the characteristic line displays. 




Setpoint value default setting
Variable operation:

  • In the variable operating mode, the setpoint value setting is set at cable wire Y with an analogue signal
  • The selected signal voltage range 0 – 10 V or 2 – 10 V DC is assigned to the set volume flow rate range qvmin – qvmax
  • Volume flow rate range qvmin – qvmax is set in the factory according to the order code
  • Subsequent adjustment of qvmin or qvmax is possible using service tools, TROX FlowCheck App, adjustment device ZTH-EU or PC-Tool

 

Constant value mode:

  • In the constant value mode operating mode, an analogue signal is not required at cable wire Y
  • The set flow rate constant value qvmin is used
  • Volume flow rate qvmin is set in the factory according to the order code
  • Subsequent adjustment of qvmin is possible using service tools, TROX FlowCheck App, adjustment device ZTH-EU or PC-Tool



Actual value as feedback for monitoring or tracking control

  • The actual volume flow rate measured by the controller can be tapped as a voltage signal at cable wire U in the default setting
  • The selected signal voltage range 0 – 10 V DC or 2 – 10 V DC is mapped to the volume flow rate range 0 – qvNom
  • The actual value output U can be reconfigured by others to output the damper position
  • Selected signal voltage range 0 - 10 V DC or 2 - 10 V DC is then mapped to the damper blade position 0% (CLOSED) - 100% (OPEN).




Override control

For special operating situations, the volume flow controller can be put in a special operating mode (override control). The following modes are possible: control qvmin, control qvmax, damper blade in the OPEN position, damper blade CLOSED. Override control can be activated by:

  • A suitable connection at signal input Y as per the connection diagrams through connection with external switching contacts/relays. OPEN and CLOSED are only available if the controller is supplied with alternating current (AC).
  • Service tools such as ZTH-EU, PC-Tool or TROX Flow-Check app are activated
  • A bus timeout monitoring is activated. (only in MP-Bus operation)
  • A control signal at signal input Y is activated (only override control CLOSED). See the following table (only in operation with analogue setpoint value)




Override control CLOSED via control signal on control signal Y

The override control CLOSE can also be activated by observing certain conditions with the command signal. The following table summarises the boundary conditions.

 

Signal voltage range

0 – 10 V DC

2 – 10 V DC

2 – 10 V DC

2 – 10 V DC

Operating parameter qvmin (factory or customer setting)

qvmin = 0

qvmin > 0

qvmin = 0

qvmin > 0

Shut-off voltage (PC-Tool)

Not possible

Not applicable

0.1 V 2

0.5 V 2

Damper closes when Y is reached

Y < 0.45 V DC

Not possible

Y < 2.36 V DC

Y < 0.1 V DC

Y < 0.5 V DC

Control is activated when Y is reached

Y > 0.55 V DC (*1)

Y > 0 V DC

Y > 2.44 V DC

Y > 0.1 – 2 V DC: qvmin



Y > 2 – 10 V DC: qvmin – qvmax

Y > 0.5 – 2 V DC: qvmin



Y > 2 – 10 V DC: qvmin – qvmax

Notes:

1 Activation of control operation with 0 –10 V and qvmin set to = 0:

The applicable volume flow rate range depends on the basic unit (TVJ/TVT: 20 – 100% of qvnom; all other basic units: 10 – 100 % of qvnom). This means that setpoint defaults can be achieved only from 2 V DC (with TVJ/TVT) or 1 V DC (with other basic units).

2 Shut-off voltage 0.1 V DC or 0.5 V DC:

If there is a possibility or risk that the 0.1 V setpoint may not be undershot on a system (DDC output or long cable length), the shut-off voltage can be changed to 0.5 V with PC-Tool. This is only possible with signal voltage range 2 – 10 V DC.

Note on mode setting 0.1 V DC or 0.5 V DC

If there is a possibility or risk that the 0.1 V setpoint may not be undershot on a system (DDC output or long cable length), the shut-off voltage can be changed to 0.5 V with PC-Tool. This is only possible with signal voltage range 2 – 10 V DC.


 

 

Digital communication interface MP bus

General information


MP bus is not an open system, but manufacturer-dependent bus system for which Belimo and its partner companies provide components and software. Examples include the TROX XAIR-ZMO-MP zone module and software for the X-AIRCONTROL room control system, also the UK24xxx Belimo gateways and the fan optimiser.


MP bus allows you to have setpoint defaults and override controls preset and to read out damper positions and volume flow rates. As for the network, any topology can be used: star, ring, line, tree and hybrid topologies.


Neither special cables nor terminal resistors are required for the wiring, but the cable lengths are limited and depend on:


  • the combined performance data of the connected MP devices
  • whether AC 24 V or DC 24 V voltage is used
  • the cable cross section

Example: MP bus with 5 LMV-D3-MP compact controllers on 24 V AC supply. Total power rating: 5 × 4 VA = 20 VA.


  • A cable with 0.75 mm2 cross section must not be longer than 28 m.
  • A cable with 1.5 mm2 cross section must not be longer than 54 m.

For more information on MP buses see the Belimo documentation at https://www.belimo.com.


 


 


VAV compact controller with MP bus


Control component BC0 is fitted with an MP bus communication interface and can be interconnected with up to 8 TROX/Belimo MP devices (damper actuators, valve actuators, VAV controllers) on a Belimo MP bus. The controller on the MP bus receives its control signal from the higher-level central BMS so that the volume flow rate setpoint can be achieved.


MP bus mode starts automatically as soon as the control component is assigned an MP address with a service tool. A standard Compact controller with an MP address becomes a bus-compatible system controller with a wide range of additional benefits.


MP bus requires that the U connection is used. The U connection can then no longer be used for analogue actual value feedback.

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