BM0

Bus interface Modbus RTU

Bus interface BACnet MS/TP

Bus interface MP-Bus

Control component with dynamic transducer and choice of bus interface: Modbus RTU, BACnet MS/TP or MP bus

Compact unit for VAV terminal unit TVR, TVJ, TVT, TZ-Silenzio, TA-Silenzio, TVZ, TVA, TVM

Controller, dynamic differential pressure transducer and actuator in one casing
Use in ventilation and air conditioning systems, only with clean air
Volume flow rates q_vmin and q_vmax are pre-set in the factory and saved in the controller as changed parameters
High data transparency through standardised bus communication Modbus RTU, BACnet MS/TP and MP bus
Setpoint value settings, override controls, parameter adjustment via bus communication
Service access for manual adjustment devices and PC configuration software

General information

Application

All-in-one control devices for VAV terminal units
Dynamic differential pressure transducer, electronic controller, and actuator are fitted together in one casing
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 q_vmin, q_vmax, shut-off or OPEN position can be set with a switch or relay or in the Modbus/BACnet register
The volume flow rate actual value is available as a network data point or as a linear voltage signal
The damper blade position is available as a network data point
Standard filtration in comfort conditioning systems allows for use of the controller in the supply air without additional dust protection
The ZTH EU service tool and PC-Tool can be used 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 particles

Use a control component with static differential pressure transducer, e.g. BUSN

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 parameterised in the controller at 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 Modbus

Interface

Communication interface

Modbus RTU, RS485 (factory setting)
BACnet MS/TP, RS485
MP bus
Data points, see bus lists

Alternatively

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)

Note

The interface type is factory set
Can be changed with service tools (by others)

Signal voltage ranges

When using the analogue interface (can be set with service tools)

0 – 10 V DC
2 – 10 V DC

Parts and characteristics

Transducer for dynamic pressure measurements
Overload protection
Controller with factory fitted connecting cable
Service interface for the connection of service tools
Clamping device
Indicator lights for indicating the operating mode
Supply voltage and communication not galvanically isolated

Operating parameters

q_vmin = 0 – 100 % of the nominal volume flow rate q_vnom adjustable
q_vmax = 20 – 100 % of the nominal volume flow rate q_vnom adjustable

Construction

Type LMV-D3-M/B TR for volume flow controllers

TVR, TZ-Silenzio, TA-Silenzio, TVZ, TVA, TVM

Type NMV-D3-M/B TR for volume flow controllers

TVJ
TVT up to 1000 × 300 or 800 × 400 mm

Type SMV-D3-M/B TR for volume flow controllers

TVT from 900 × 400 mm

Commissioning

As the volume flow rates are factory set, the terminal units have to be installed at the specified locations
Analogue interface: analogue signalling to be set with PC-Tool (by others)
Modbus/BACnet/MP bus interface: additional commissioning steps may be required
Operating parameters can be adjusted with service tools (by others)

Useful additions

Service tools:

Adjustment device ZTH-EU (order code AT-VAV-B)
PC-Tool software

Information technique

Function, Specification text, Order code

Principle of operation

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.
For volume flow rate measurement the effective pressure is measured first. This is done with a differential pressure sensor. The integral differential pressure transducer transforms 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 (q_vnom).
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 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 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 control
Control of a constant or variable volume flow rate setpoint
Electronic controller for applying a reference value and capturing an actual value for integration with a Modbus or BACnet based central BMS
The actual value relates to the nominal volume flow rate so that commissioning and subsequent adjustment are simplified

Application

Dynamic transmitter for clean air in ventilation and air conditioning systems

Supply voltage

24 V AC / DC

Actuator

Integrated; slow running (running time approx. 120 – 150 s for 90°)

Installation orientation

Either direction

Interface/signalling

Modbus RTU (RS-485)
BACnet MSTP (RS-485)
MP bus
Analogue hybrid mode
Supply and communication not galvanically isolated
Termination switchable

Connection

Connecting cable with 6 wires

Interface information

Modbus, BACnet, MP bus register
Volume flow rate setpoint and actual value, damper blade position, error status, etc.

Special functions

Activation of q_vmin, q_vmax, CLOSED and OPEN positions with Modbus, BACnet or MP bus register
Optional operating mode: open loop (actuator with air flow measurement)

Parameter setting

Parameters specific to the VAV terminal unit are factory set
Operating values q_vmin, q_vmax and interface type are factory set
Values can be adjusted at a later stage in the Modbus, BACnet or MP bus register or with optional tools, i.e. adjustment device or PC software (wire connection in each case)

Factory condition

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

Control component BM0 (shown together with TVR as an example)

TVR

–

200

BM0

500 – 1200 [m³/h]

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

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 component)
BM0 Compact controller with dynamic transducer and Modbus RTU, BACnet MS/TP or MP bus interface

9 Operating mode
V Variable operation (adjustable setpoint value range)

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

Order example: TVR-D-P1/200/D2/BM0/V/500-1200[m³/h]

Type	TVR
Acoustic cladding	With acoustic cladding
Material	Powder-coated RAL 7001 (silver grey)
Duct connection	Push-fit, suitable for ducts according to EN 1506; with groove for optional lip seal
Nominal size [mm]	200
Accessories	Double lip seal both ends
Attachments (control component)	BC0 – Compact controller with dynamic transducer and Modbus RTU, BACnet MS/TP or MP bus interface
Operating mode	Variable operation
Operating values for factory setting	500 – 1200 [m³/h]

Variants, Product details

Compact controller BM0, type LMV-D3-M/B TR, 5 Nm

1: VAV Compact

2: Gear release button

3: Connections for differential pressure sensor

4: Service socket

5: Clamping device

6: Rotation stop

7: Push button with indicator light (top green, bottom yellow)

8: Connecting cable

Analogue mode or hybrid mode 0 – 10 V DC or 2 – 10 V DC

The controller is supplied from the factory with operating mode Modbus-RTU. For analogue or hybrid mode, it must be switched over on-site using the ZTH-EU or PC tool. The analogue interface can be adjusted for the signal voltage range 0 – 10V DC or 2 – 10 V DC using PC tool.
The assignment of the volume flow rate setpoint value or actual value for voltage signals is shown in the characteristic curves. In hybrid mode, an analogue control input signal with digital feedback as per the bus interface list is possible.

Analogue hybrid mode

With analogue setpoint value setting via cable wire 3 and analogue feedback via cable wire 5, it is nevertheless possible to have feedback via BACnet MS/TP or Modbus RTU.
Override controls q_vmin, q_vmax, damper blade in the OPEN position or damper blade CLOSED possible via bus interface.
Various operating parameters as per the bus interface list can be called up via BACnet MS/TP or Modbus RTU.

Setpoint value setting

Variable operation

In the variable operating mode, setpoint values are set using an analogue signal at cable wire 3. Setpoint value settings via the respective bus system are rejected.
The selected signal voltage range 0 – 10V or 2 – 10V DC is assigned to the volume flow rate range q_vmin – q_vmax set.
Volume flow rate range q_vmin – q_vmax pre-set in the factory according to the order code entries.
Subsequent adjustment of q_vmin or q_vmax possible via service tool ZTH-EU or PC tool.

Constant value mode

In the constant value mode operating mode, an analogue signal is not required at cable wire 3.
The volume flow rate constant value set by q_vminis regulated.
Volume flow rate q_vmin is pre-set in the factory according to the order code entry.
Subsequent adjustment of q_vminpossible via service tool 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 5.
The selected signal voltage range 0 – 10V DC or 2 – 10V DC is shown in the volume flow rate range 0 – q_vnom .
In analogue mode there is also the option of querying operating data using the Modbus interface.

Override control

For special operating situations, the volume flow controller can be put in a special operating mode (override control). The following are possible: control q_vmin, control q_vmax, damper blade in the OPEN position or damper blade CLOSED.

Override controls via signal input Y
Thanks to appropriate wiring on the signal input Y, the override controls can be activated according to the connection diagrams via wiring with external switch contacts / relays (see wiring examples). OPEN and CLOSED are only available if the controller is supplied with alternating current (AC).

Override control CLOSED via control signal on control signal Y

With signal voltage range 0 – 10V DC: CLOSED is activated when q_vmin = 0 set and control signal Y < 0.5V DC.
with signal voltage range 2 – 10 V DC: CLOSED is activated when control signal is Y < 2.4 V _(*1) DC.

Override controls in analogue mode via Modbus interface

If the Modbus interface is additionally connected in analogue mode, an override control can also be specified via Modbus register 1.

Override control for diagnostic purposes
Activation via service tools ZTH-EU or PC tool

Prioritisation of various setting options

Settings for override controls via analogue are prioritised over Modbus/BACnet settings.
Highest priority: setting via an analogue override control
Medium priority: settings via the service connector (adjustment device, PC software) for test purposes
Lowest priority: setting via Modbus/BACnet/MP bus

Technical data

Volumenstromsollwert_0-10V_fo_01pdf.pdf.link

Volumenstromistwert_0-10V_fo_01pdf.pdf.link

Volumenstromsollwert_2-10V_fo_01pdf.pdf.link

Volumenstromistwert_2-10V_fo_01pdf.pdf.link

Anschlussplan_Klemmenblock_90x90_BM0_MP_Busbetriebsvg.png

Anschlussplan_Klemmenblock_90x90_BM0_Analogbetrieb_neusvg.png

Compact controllers for VAV terminal units

VAV terminal units	Type of installation component	Part number
TVR, TZ-Silenzio, TA-Silenzio, TVZ, TVA	LMV-D3-M/B TR	A00000070458
TVJ and TVT up to 900 × 400 or 800 × 400	NMV-D3-M/B TR	A00000070469
TVM	2x LMV-D3-M/B TR	A00000070458
TVJ	NMV-D3-M/B TR	A00000070469
TVT up to 1000 × 300 or 800 × 400	NMV-D3-M/B TR	A00000070469
TVT from 900 × 400	SMV-D3-M/B TR	A00000090713

Compact controller BM0, LMV-D3-M/B TR

Measurement principle/installation orientation	Dynamic measurement principle, position-independent
Supply voltage (AC)	24 V AC, 50/60 Hz
Supply voltage (DC)	24 V DC
Power rating (AC)	4 VA max. (8 A max. @ 5 ms)
Power rating (DC)	2 W max.
Torque	5 Nm
Bus connection	Modbus RTU**, BACnet MS/TP, MP-Bus
Adjustable communication parameters Modbus RTU	Baud rate: 9600, 19200, 38400, 76800, 115200; Address: 1, 2, 3 – 247; Parity: 1-8-N-2, 1-8-N-1, 1-8-E-1, 1-8-O-1; No. of nodes: up to 32 (without repeater); Terminal resistor: 120 Ω, integral, can be activated**
Adjustable communication parameters BACnet MS/TP	Baud rate: 9600, 19200, 38400,76800, 115200; Address: 0, 1, 2, 3 – 127; No. of nodes: up to 32 (without repeater); Terminal resistor: 120 Ω, integral, can be activated
Addressing	Required on-site: e.g. adjustment device ZTH-EU
Setpoint value signal input (analogue optional)	0 – 10 V or 2 – 10 V DC
Actual value signal output (analogue optional)	2 – 10 V DC
Connections	Cable, 6 × 0.75 mm², preassembled
IEC protection class	III (protective extra-low voltage)
Protection level	IP 54
Functional range	19.2 – 28.8 V AC or 21.6 – 28.8 V DC
EC conformity	EMC to 2014/30/EU
Weight	0.5 kg

**Factory setting

Compact controller BM0, NMV-D3-M/B TR

Measurement principle/installation orientation	Dynamic measurement principle, position-independent
Supply voltage (AC)	24 V AC, 50/60 Hz
Supply voltage (DC)	24 V DC
Functional range	AC 19.2 – 28.8 V/DC 21.6 – 28.8 V
Power rating (AC)	5 VA max. (8 A max. @ 5 ms)
Power rating (DC)	3 W max.
Torque	10 Nm
Bus connection	Modbus RTU**, BACnet MS/TP, MP-Bus
Adjustable communication parameters Modbus RTU	Baud rate: 9600, 19200, 38400, 76800, 115200; Address: 1, 2, 3 – 247; Parity: 1-8-N-2, 1-8-N-1, 1-8-E-1, 1-8-O-1; No. of nodes: up to 32 (without repeater); Terminal resistor: 120 Ω, integral, can be activated**
Adjustable communication parameters BACnet MS/TP	Baud rate: 9600, 19200, 38400, 76800, 115200; Address: 0, 1, 2, 3 – 127; No. of nodes: up to 32 (without repeater); Terminal resistor: 120 Ω, integral, can be activated
Addressing	Required on-site: e.g. adjustment device
Setpoint value signal input (analogue optional)	0 – 10 V or 2 – 10 V DC
Actual value signal output (analogue optional)	2 – 10 V DC
Connections	Cable, 6 × 0.75 mm², preassembled
IEC protection class	III (protective extra-low voltage)
Protection level	IP 54
EC conformity	EMC to 2014/30/EU
Weight	0.7 kg

**Factory setting

Compact controller BM0, SMV-D3-M/B TR

Measurement principle/installation orientation	Dynamic measurement principle, position-independent
Supply voltage (AC)	24 V AC, 50/60 Hz
Supply voltage (DC)	24 V DC
Power rating (AC)	6.5 VA max. (8 A max. @ 5 ms)
Power rating (DC)	3.5 W max.
Torque	20 Nm
Bus connection	Modbus RTU**, BACnet MS/TP, MP bus
Modbus RTU communication parameters to be set	Baud rate: 9600, 19200, 38400, 76800, 115200; Address: 1, 2, 3 – 247; Parity: 1-8-N-2,** 1-8-N-1, 1-8-E-1, 1-8-O-1; No. of nodes: up to 32 (without repeater); Terminal resistor: 120 Ω, integral, can be activated
BACnet MS/TP communication parameters to be set	Baud rate: 9600, 19200, 38400, 76800, 115200; Address: 0,1,2.3 – 127; No. of nodes: up to 32 (without repeater); Terminal resistor: 120 Ω, integral, can be activated
Addressing	By others; with an adjustment device, for example
Setpoint value signal input (analogue as an option)	0 – 10 V or 2 – 10 V DC
Actual value signal output (analogue as an option)	2 – 10 V DC
Connections	Plug-in cable, 6 × 0.75 mm²
IEC protection class	III (protective extra-low voltage)
Protection level	IP 54
Functional range	AC 19.2 – 28.8 V/DC 21.6 – 28.8 V
EC conformity	EMC to 2014/30/EU
Weight	0.7 kg

**Factory setting

Commissioning

As the volume flow rates are factory set, the terminal units have to be installed at the specified locations
Comply with the volume flow rate control ranges of the VAV terminal units; do not set a volume flow rate lower than the minimum flow rate
Additional commissioning steps for setting up the bus communication (assignment of device addresses) may be required after installation and wiring
Additional commissioning steps (using a service tool) may also be required for integrating the control component with the local network

Additional commissioning steps

If the Modbus interface is used:
Adjust the (factory set) device address and communication parameters, for example
If the BACnet interface is used:
Use the service tool to set the type of communication interface to BACnet to change, for example, the device address and communication settings
If the MP bus interface is used:
Use the service tool to set the type of communication interface to MP bus to change, for example, the device address and communication settings

LEDs and operation

Green LED/push button

Off: no power
On: power is being supplied
Blinking: address mode is active; blinking frequency depends on the set address 1 – 16
Press the push button:
during normal operation to start rotation angle adjustment
in address mode to confirm the set address 1 – 16

Yellow LED/push button

Off: normal operation
On: adaption or synchronisation in progress or control component in address mode (green LED is blinking)
Flickering: communication is active (only with Modbus or BACnet)
Keeping the push button pressed for more than 5 s when you switch on the device resets the communication parameters to the factory settings

Additional functions with Modbus or BACnet:

Normal operation: Press the push button for more than 3 s to switch the address mode for quick addressing on or off
In address mode: Press the push button several times to set the bus address (press 1 × for address 1, 2 × for address 2, etc.)

Service tool range of functions

Function/parameter setting	PC-Tool	ZTH-EU¹
Setting of q_vmin, q_vmax	R, W	R, W
Modbus, BACnet settings (address, communication parameters)	-	R, W
MP bus settings (address)	R, W	R, W
Setpoint value default setting via analogue connection or bus (Modbus, BACnet or MP bus)	-	R,W
Signal voltage range setting 0 – 10 V or 2 – 10 V DC for analogue interface	R, W	R, W

Note:

R,W = Read and write access
R = Read only
W = Write
- = Function is not available with this service tool.

¹minimum version for ZTH-EU Firmware: V 2.09.0004

To ensure flawless use, the service tools should always be kept up to date with the latest software version.
Information on current versions/updates for PC-Tool software and adjustment device ZTH-EU can be found on the Belimo Hompage www.belimo.com.

Modbus RTU communication interface

Number	Register Address	Description	Range Enumeration	Unit	Scaling	Access
1		Setpoint value Setpoint value between q_vmin and q_vmax	0 – 10000 Factory setting: 0	%	0.01	[R / W]
2	1	Override control Overwrites the setpoint value with override control	0: None 1: OPEN 2: CLOSED 3: q_vmin 4: q_vmid 5: q_vmax Factory setting: None (0)	-	-	[R / W]
3	2	Command triggering - Release of functions for service and test purposes. Reset resets the controller and clears internal error memory such as register 105.	0: None 1: Adaptation 2: Test 3: Synchronisation 4: Reset Factory setting: None (0)	-	-	[R / W]
4	3	Type of actuator	0: Actuator not connected/not known 1: Actuator air/water with/without safety function 2: Volume flow controller VAV/EPIV 3: Fire damper 4: Energy valve 5: 6way EPIV	-	-	[R]
5	4	Current damper blade position (%)	0 – 10000	%	0.01	[R]
6	5	Damper blade angle (°)	0 – max.	°	1	[R]
7	6	Relative volume flow rate related to q_vnom	0 – 10000	%	0.01	[R]
8	7	Absolute volume flow rate related to q_vnom	0 – q_vnom	m³/h	1	[R]
9	8	Sensor value in mV	0 – 65353	mV	1	[R]
10	9	-	-	-	-	[–]
11	10	Absolute volume flow rate in selected volume flow unit acc. to register 15 (Lowword)	-	UnitSel	0.0001	[R]
12	11	Absolute volume flow rate in selected volume flow unit acc. to register 15 (Highword)	-	UnitSel	0.0001	[R]
13	12	Analogue setpoint value (%). Shows the setpoint value in % with control input signal.	0 – 10000	%	0.01	[R]
100	99	Bus terminal resistor. Indicates whether the terminating resistor (120 Ω) is active or deactivated.	0: Inactive 1: Active Factory setting: inactive (0)	-	-	[R / W*]
101	100	Serial number, part 1	-	-	-	[R]
102	101	Serial number, part 2	-	-	-	[R]
103	102	Serial number, part 3	-	-	-	[R]
104	103	Firmeware Version. Example: 302, Version 3.02	-	-	-	[R]
105	104	Malfunctions and service information	Bit1: Mechanical travel exceeded Bit2: Actuator cannot be moved (e.g. mechanical overload) Bit8: Internal activity (e.g. test run, adaptation) Bit9: Gear release active Bit10: Bus monitoring triggered	-	-	[R]
106	105	Setting work areas q_vmin Requirements q_vminvmax Vmax in the area 0 - 100 % q_vnom	0 – q_vmax Standard: 0	%	0.001	[R / W*]
107	106	Setting work areas q_vmax Requirements q_vmaxvmin Vmax in the area 20 - 100 % q_vnom	q_vmin–₁₀₀₀₀ Standard: 10000	%	0.01	[R / W*]
108	107	Sensor type	0: None 1: Active sensor (in hybrid mode) 2: - 3: - 4: Switch contact Factory setting: None (0)	-	-	[R / W*]
109	108	Bus timeout monitoring	0: Last setpoint value 1: Fast close – CLOSED 2: Quick open – OPEN 3: Center position Factory setting: Last setpoint value (0)	-	-	[R / W*]
110	109	Time until release bus timeout monitoring	0 - 3600 seconds Factory setting: 0 (bus timeout monitoring deactivated)	s	1	[R / W*]
111	110	Nominal volume flow rate [m³/h]	-	m³/h	1	[R]
112	111	-	-	-	-	[–]
113	112	Nominal volume flow rate in selected volume flow unit acc. to Reg 118 (LowWord)	-	UnitSel	0.001	[R]
114	113	Nominal volume flow rate in selected volume flow unit acc. to 118 (HighWord)	-	UnitSel	0.001	[R]
115	114	-	-	-	-	[–]
116	115	-	-	-	-	[–]
117	116	Control mode	0: Position control (open loop) 1: Volume flow control	-	-	[R / W*]
118	117	Unit selection	0: m³/s 1: m³/h 2: l/s 3: l/min 4: l/h 5: gpm 6: cfm Standard m³/h (1)	-	-	[R / W*]
119	118	Setpoint value setting	0: Analogue (0 – 10 V, 2 – 10 V) 1: Bus (Modbus, BACnet, MP-Bus) Factory setting: Bus (1)	-	-	[R / W*]

R = Read-only access to register

R/W = Read/write access to register

R/W* = Limited read/write access to register

Registers from 100 with write access are persistent (stored in EEPROM), regular or cyclical writing must be avoided.

Object processing

Object type	Optional properties	Writeable properties
Analogue input [AI]	Description COV Increment	COV Increment
Analogue Output [AO]	Description COV Increment	Present Value COV Increment Relinquish Default
Analogue Value [AV]	Description COV Increment	Present Value COV Increment
Binary Input [BI]	Description Active Text Inactive Text
Device	Description Location Active COV Subscriptions Max Master Max Info Frames Profile Name	Object Identifier Object Name Location Description APDU Timeout (1000 – 60000) Number Of APDU Retries (0 – 10) Max Master (1 – 127) Max Info Frames (1 – 255)
Multi-state Input [MI]	Description State Text
Multi-state Output [MO]	Description State Text	Present Value Relinquish Default
Multi-state Value [MV]	Description State Text	Present Value (if marked)

Processing of services

The device does not support the services "Create object" and "Delete object"
The specified maximum length of the writable character strings is based on single-byte characters

Object name 32 characters
Location 64 characters
Description 64 characters

The device supports the DeviceCommunicationControl Services, no password necessary
A maximum of 6 active COV subscriptions with a run time of 1 – 28800 s (maximum of 8 h) is supported

Protocol Implementation Conformance Statement – PICS (general information)

Date	2020-06-11
Vendor name	TROX GmbH
Vendor ID	329
Product name	VRU-D3-BAC, VRU-M1-BAC, VRU-M1R-BAC
Product model number	VRU – BAC
Application software version	01.02.0001
Firmware revision	10.02.0000
BACnet Protocol Revision	12
Product description	Controller for VAV/CAV and pressure applications
BACnet Standard Device Profile	BACnet Application Specific Controller (B-ASC)
BACnet Interoperability Building Blocks Supported	Data Sharing – ReadProperty-B (DS-RP-B) Data Sharing – ReadPropertyMultiple-B (DS-RPM-B) Data Sharing – WriteProperty-B (DS-WP-B) Data Sharing – WritePropertyMultiple-B (DS-WPM-B) Data Sharing – COV-B (DS-COV-B) Device Management – DynamicDeviceBinding-B (DM-DDB-B) Device Management – DynamicObjectBinding-B (DM-DOB-B) Device Management – DeviceCommunicationControl-B (DM-DCC-B)
Segmentation Capability	No
Data Link Layer Options	MS/TP master, baud rates: 9600, 19200, 38400, 76800, 115200
Device Address Binding	No static device binding supported
Networking Options	None
Character Sets Supported	ISO 10646 (UTF-8)
Gateway Options	None
Network Security Options	Non-secure device

Communication interface BACnet MS/TP

Object Name	Object Type	Description	Values	COV Increment	Access
Device	Device [Inst.No]		0 – 4194302 Default: 1	-	W
RelPos	AI[1]	Damper blade position in % Overridden = 1 (gear latch pressed)	0 – 100	0.01 – 100 Standard: 1	R
AbsPos	AI[2]	Absolute position in ° Overridden = 1 (gear latch pressed)	0 - max. rotation angle	0.01 – 65353 Factory setting: 1	R
SpAnalogue	AI[6]	Analogue setpoint value in % Shows the analogue setpoint value in %, if setpoint value setting is in (SpSource[122]) Analogue (1) If setpoint value setting (SpSource[122]) Bus (2) = then Out_Of_Service is TRUE	0 – 100	0.01 – 100 Standard: 1	R
RelFlow	AI[10]	Relative volume flow rate in %	0 – 100	0.01 – 100 Standard: 1	R
AbsFlow_UnitSel	AI[19]	Absolute volume flow rate of selected unit acc. to [121]	0 – V_nom	0.01 – 1000 Standard: 1	R
Sens1Analogue	AI[20]	Sensor 1 is an analogue value in mV Analogue value in mV, if Sensor1Type MV[220] is active. If (sensor1type MV[220]) = 2 (not active) or (SpSource MV [122]) = 2 (Bus), Out_of_Service = TRUE	-	0.01 – 1000 Standard: 1	R
SpRel	AO[1]	Relative setpoint value in % Setpoint value between q_vmin AV[97] and q_vmax [98] (Only with bus control input signal) If SpSource (MV[122]) = 1 (Analogue), then Out_of_Service = TRUE	0 – 100 Factory setting: 0	0.01 – 100 Factory setting: 1	C
Min.	AV[97]	Minimum setpoint value in % (q_vmin) Requirement: q_vmin < q_vmax q_vmin in the range 0 - 100 & q_vnom	0 – V_max Factory setting: 0	0.01 – 100 Factory setting: 1	W
Max.	AV[98]	Minimum setpoint value in % (q_vmax) Requirement: q_vmax > q_vmin q_vmax in the range 20 - 100 % of q_vnom	V_min – 100 Standard: 100	0.01 – 100 Standard: 1	W
Vnom_UnitSel	AV[104]	Current volume flow rate as per selected volume flow unit (UnitSelFlow MV[121])	-	0.01 – 100 Standard: 1	R
Bus Watchdog	AV[130]	Time until the release bus timeout monitoring in s If Present_Value ≠ 0, then write access to Present_Value is monitored by AO[1] and MO[1]. Writing to Present_Value AO[1] MO[1] resets the timer. In hybrid mode, only write accesses to MO[1] are monitored.	0 – 3600 s Factory setting: 0 (bus timeout monitoring deactivated)	0.01 – 1000 Standard: 1	W
Sens1Switch	BI[20]	Switch status of the switch at the sensor input. If SenType MV [122] = 5 (switch) If SensType MV [122] ≠ 5 Out_of_Service = TRUE	Inactive_Text: Switch not active Active_Text: Switch active	-	R
BusTermination	BI[99]	Terminal resistor Shows whether the terminal resistor (120 Ω) has been activated via the service tools.	Inactive_Text: Switch not active Active_Text: Switch active	-	R
SummaryStatus	BI[101]	Condensed status Summary status (MI[106], MI[110])	Inactive_Text: no error Active_Text: Error	-	R
InternalActivity	MI[100]	Status Activity	1: None 2: Test 3: Adaptation	-	R
StatusActuator	MI[106]	Status of the actuator	1: OK 2: Actuator cannot be moved 3: Gear release active 4: Mechanical travel exceeded	-	R
StatusDevice	MO[110]	Status of the unit Shows the general status of the device	1: OK 2: Bus timeout monitoring activated	-	R
Override	MO[1]	Override control Overwrites the setpoint value (SpRel AO[1]) with a forced command.	1: None 2: OPEN 3: CLOSED 4: q_vmin 5: q_vmid 6: q_vmax Factory setting: None (1)	-	C
Command	MV[120]	Release test functions	1: None 2: Adaptation 3: Test 4: Reset Factory setting: None (1)	-	W
UnitSelFlow	MV[121]	Unit selection The selected unit is indicated in AI[19] and AV[104].	1: m³/s 2: m³/h 3: l/s 4: l/min 5: l/h 6: gpm 7: cfm Factory setting: m³/h (2)	-	W
ControlMode	MV[122]	Setpoint value setting	1: Analogue (0 – 10 V, 2 – 10 V) 2: Bus (Modbus, BACnet, MP-Bus) Factory setting: Bus (2)	-	W
ControlMode	MV[223]	ControlMode	1: Position control (OponLoop) 2: Volume flow control	-	W
Sens1Type	MV[220]	Definition of the sensor type for the analogue input	1: None 2: Active sensor (in hybrid mode) 5: Switch Factory setting: None (1)	-	W

Product details bus operation

Bus operation

The controller is supplied from the factory with operating mode Modbus-RTU. The operating mode can be switched to BACnet, MP bus or analogue at any time using the service tool ZTH-EU. For a smooth exchange of data in the bus network provided by others, the communication parameters and the user address for the bus interface are required. The communication parameters for the bus systems (address, baud rate etc.) can be set using the ZTH-EU. The interface provides standardised bus register/object access to the available data points.

Setpoint value default setting

In the operating mode Modbus RTU (factory setting), the setpoint value is only set by specifying the volume flow rate set point value [%] in the Modbus register 0.
The transferred percentage value refers to the volume flow rate range specified by q_vmin – q_vmax
Volume flow rate range q_vmin – q_vmax preset at the factory according to the order code
Subsequent adjustment of q_vmin or q_vmax possible using service tool ZTH-EU or Modbus/BACnet interface.

Actual value as feedback for monitoring or tracking control

The actual values can be read off in m³/h (factory setting) in both Modbus and BACnet.
- Other units such as m³/s, l/s, l/min, l/h, gpm, cfm possible
In addition to the volume flow rate actual value, further information on other Modbus registers/BACnet objects can be read out.
- Overview of the registers/objects in the communication tables
For diagnostic purposes, the volume flow rate actual value can be tapped at cable wire 5 in bus mode
The volume flow rate range 0 – q_vNom always corresponds to the signal voltage range of (0)2 – 10 V DC

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 P_vmin, control q_vmax, damper blade in the OPEN position or damper blade CLOSED.

Override control via the bus

This is set via the Modbus register 1 or via BACnet object type MO[1].

Override control via bus timeout monitoring (Modbus)

If the Modbus communication fails for a stipulated time period, a pre-defined operating mode q_vmin, q_vmax, OPEN or CLOSED can be activated.

The override control to be activated upon bus timeout is specified via Modbus register 108
The time period after which override control is activated upon bus timeout is specified via Modbus register 109
Each Modbus communication resets the timeout of the bus timeout monitoring

Override control via bus timeout monitoring (BACnet)

If the BACnet communication fails for a specified period, a predefined operating state can be activated.

The setpoint value to be activated upon bus timeout is specified via Relinquish_Default from SpRel (object AO1)
Bus timeout period is defined via BusWatchdog (object type AV [130])
Communication on the data points SpRel (Object AO[1] and Override (Object MO[1])

Override controls for diagnostic purposes

Activation via bus system, external/on-site switch contacts, ZTH-EU or PC software.

Prioritisation of various setting options

Settings for override controls via analogue are prioritised over Modbus/BACnet settings.

Highest priority: setting via an analogue override control
Medium priority: settings via the service connector (adjustment device, PC software) for test purposes
Lowest priority: setting via Modbus/BACnet/MP-Bus

Téléchargements

Information produit

Product data sheet control components BM0

BM0_PD_2022_09_15_DE_en Product data sheet 570 ko pdf

Certificats

Konformitätserklärung / Declaration of coformity BM0-NMV-D3-M_B.1

BM0-NMV-D3-M_B.1-TR_CE_01_2020_07_30_de_en_fr Certificate 41 ko pdf
Konformitätserklärung / Declaration of conformity SMV-D3-M/B TR

CE_SMV-D3-M_B-TR_de_en_fr Certificate 25 ko pdf
Konformitätserklärung / Declaration of conformity BM0-LMV-D3-M_B.1

BM0-LMV-D3-M_B.1-TR_CE_01_2020_07_30_de_en_fr Certificate 41 ko pdf

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BM0

Control component with dynamic transducer and choice of bus interface: Modbus RTU, BACnet MS/TP or MP bus

General information

Information technique

Function, Specification text, Order code

Variants, Product details

Technical data

Product details bus operation

Téléchargements

Information produit

Product data sheet control components BM0

Certificats

Konformitätserklärung / Declaration of coformity BM0-NMV-D3-M_B.1

Konformitätserklärung / Declaration of conformity SMV-D3-M/B TR

Konformitätserklärung / Declaration of conformity BM0-LMV-D3-M_B.1

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