Sentera Controls DSVCX-R Service manual

DSVCX-R MULTIFUNCTIONAL DUCT
TRANSMITTER
Mounting and operating instructions

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DSVCX-R
MULTIFUNCTIONAL DUCT
TRANSMITTER
Table of contents
SAFETY AND PRECAUTIONS 3
PRODUCT DESCRIPTION 4
ARTICLE CODE 4
INTENDED AREA OF USE 4
TECHNICAL DATA 4
STANDARDS 4
OPERATIONAL DIAGRAMS 5
WIRING AND CONNECTIONS 6
MOUNTING & OPERATING INSTRUCTIONS IN STEPS 6
OPERATING INSTRUCTIONS 9
VERIFICATION OF INSTALLATION 10
TRANSPORT AND STORAGE 10
WARRANTY AND RESTRICTIONS 10
MAINTENANCE 10

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DSVCX-R
MULTIFUNCTIONAL DUCT
TRANSMITTER
SAFETY AND PRECAUTIONS
Read all the information, the datasheet, Modbus map, mounting and operating
instructions and study the wiring and connection diagram before working with the
product. For personal and equipment safety, and for optimum product performance,
make sure you entirely understand the contents before installing, using or maintaining
this product.
For safety and licensing (CE) reasons, unauthorised conversion and/ or modifications
of the product are inadmissible.
e product should not be exposed to abnormal conditions, such as extreme
temperatures, direct sunlight or vibrations. Long-term exposure to chemical
vapours in high concentration can affect the product performance. Make sure the
work environment is as dry as possible; avoid condensation.
All installations shall comply with local health and safety regulations and local
electrical standards and approved codes. is product can only be installed by
an engineer or a technician who has expert knowledge of the product and safety
precautions.
Avoid contacts with energised electrical parts. Always disconnect the power
supply before connecting, servicing or repairing the product.
Always verify that you apply appropriate power supply to the product and use
appropriate wire size and characteristics. Make sure that all the screws and nuts
are well tightened and fuses (if any) are fitted well.
Recycling of equipment and packaging should be taken into consideration and these
should be disposed of in accordance with local and national legislation/regulations.
In case there are any questions that are not answered, please contact your
technical support or consult a professional.

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DSVCX-R
MULTIFUNCTIONAL DUCT
TRANSMITTER
PRODUCT DESCRIPTION
DSVCX-R are multifunctional duct transmitters which measure temperature, relative
humidity and a broad range of total volatile organic compounds (ТVOC). e TVOC
concentration is an accurate indicator for indoor air quality. e series features 3
analogue / modulating outputs - one for temperature, one for relative humidity and
one for TVOC. All the parameters and measurements are accessible via Modbus
RTU.
ARTICLE CODE
Article
code Supply
Maximum
power
consumption
Nominal
power
consumption
Imax
DSVCG-R 18—34 VDC
2,65 W 1,66 W 111 mA15—24 VAC ±10%
DSVCF-R 18—34 VDC
INTENDED AREA OF USE
■Measurement of temperature, relative humidity and TVOC in ducts
■Monitoring of air quality in ducts
TECHNICAL DATA
■3 analogue / modulating outputs:
►0—10 VDCmode: min. load 50 kΩ (RL≥ 50 kΩ)
►0—20 mA: max. load 500 Ω (RL≤ 500 Ω)
►PWM (open-collector type): PWM Frequency: 1 kHz, min. load 50 kΩ (RL≥ 50 kΩ);
PWM voltage level 3,3 VDC or 12 VDC
■Silicon based sensor elements for TVOC measurements
■Bootloader for updating the firmware via Modbus RTU communication
■Modbus RTU (RS485)
■Replaceable TVOC sensor module
■Selectable temperature range: -30—70 °C
■Selectable relative humidity range: 0—100 % rH
■Selectable ТVOC range: 0—60.000 ppb
■Warm-up time: 15 minutes
■Accuracy: ±0,4 °C (-30—70 °C); ±3 % rH (0—100 % rH)
■Enclosure and probe material:
►ASA, grey (RAL9002)
■Protection standard: enclosure: IP54, probe: IP20
■Operating ambient conditions:
►temperature: -30—70 °C
►rel. humidity: 0—100 % rH, (non-condensing)
■Storage temperature: -10—60 °C

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DSVCX-R
MULTIFUNCTIONAL DUCT
TRANSMITTER
STANDARDS
■EMC Directive 2014/30/EC:
►EN 61000-6-1:2007 Electromagnetic compatibility (EMC) - Part 6-1:
Generic standards - Immunity for residential, commercial and light-industrial
environments
►EN 61000-6-3:2007 Electromagnetic compatibility (EMC) - Part 6-3: Generic
standards - Emission standard for residential, commercial and light-industrial
environments Amendments A1:2011 and AC:2012 to EN 61000-6-3
►EN 61326-1:2013 Electrical equipment for measurement, control and laboratory
use - EMC requirements - Part 1: General requirements
►EN 61326-2-3:2013 Electrical equipment for measurement, control and
laboratory use - EMC requirements - Part 2-3: Particular requirements - Test
configuration, operational conditions and performance criteria for transducers
with integrated or remote signal conditioning
■WEEE Directive 2012/19/EC
■RoHs Directive 2011/65/EC
OPERATIONAL DIAGRAMS
Analogue /
modulating output
1 [%]
100
-30 Min range Max range 70 T [°C]
Analogue /
modulating output
2 [%]
100
0 Min range Max range 100 rH [%]
Analogue /
modulating output
3* [%]
100
1 Min range Max range 60.000 TVOC [ppb]

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DSVCX-R
MULTIFUNCTIONAL DUCT
TRANSMITTER
WIRING AND CONNECTIONS
Article type DSVCF-R DSVCG-R
VIN 18—34 VDC 18—34 VDC 15—24 VAC ±10%
GND Ground Common ground AC ~
AModbus RTU (RS485), signal A Modbus RTU (RS485), signal A
/B Modbus RTU (RS485), signal /B Modbus RTU (RS485), signal /B
AO1 Analogue / modulating output 1 for temperature
measurement (0—10 VDC / 0—20 mA / PWM)
Analogue / modulating output 1 for temperature
measurement (0—10 VDC / 0—20 mA / PWM)
GND Ground AO Common ground
AO2
Analogue / modulating output 2 for relative
humidity measurement
(0—10 VDC / 0—20 mA / PWM)
Analogue / modulating output 2 for relative humidity
measurement
(0—10 VDC / 0—20 mA / PWM)
GND Ground AO Common ground
AO3 Analogue / modulating output 3 for TVOC
measurement (0—10 VDC / 0—20 mA / PWM)
Analogue / modulating output 3 for TVOC
measurement (0—10 VDC / 0—20 mA / PWM)
GND Ground AO Common ground
Connections Spring contact terminal blocks, cable cross section: 1,5 mm2
e -F version of the product is not suited for 3-wire connection. It has separate
grounds for power supply and analogue output. Connecting both grounds together
might result in incorrect measurements. Minimum 4 wires are required to connect
-F type sensors.
e -G version is intended for 3-wire connection and features a ‘common ground’.
is means that the ground of the analogue output is internally connected with
the ground of the power supply. For this reason, -G and -F types cannot be used
together on the same network. Never connect the common ground of -G type
articles to other devices powered by a DC voltage. Doing so might cause permanent
damage to the connected devices.
ATTENTION
MOUNTING & OPERATING INSTRUCTIONS IN STEPS
Before you start mounting the unit read carefully “Safety and Precautions”.
e sensor is not designed, manufactured or intended for control or monitoring
equipment in environments requiring life safety performance, in which the failure
of the sensor could lead directly to death, personal injury, or severe physical or
environmental damage.
NOTE
Follow these steps:
1. When preparing to mount the unit, bear in mind that the probe opening must be
positioned in the centre of the duct. Always use the flange to install the sensor on
round ducts. It is possible to install the sensor without the flange on rectangular
ducts (if necessary), see Fig. 1 and Fig. 2 below.

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DSVCX-R
MULTIFUNCTIONAL DUCT
TRANSMITTER
Fig. 1 Mounting dimensions
With ange Without ange
60
Ø 12
2x Ø 5
86,8
18,5
42,3
50
285
Probe opening
243
34,5
4x
Ø 4,4
70
66
100
105
80
Fig. 2 Mounting position
Correct Incorrect
AIR FLOW AIR FLOW
2. Having selected the appropriate mounting location, proceed with the following steps:
2.1 Drill a tight-sealing Ø 13 mm hole into the duct.
2.2 Fix the flange onto the duct outer surface using the self-drilling screws
delivered with the unit. If you do not intend to use the flange, insert the
probe and fix the enclosure onto the duct. Mind the airflow direction (see
Fig. 2 and Fig. 3).

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DSVCX-R
MULTIFUNCTIONAL DUCT
TRANSMITTER
Fig. 3 Mounting requirements
7,5*D(1)3,5*D
(1)D = Duct diameter
Installation requirements: e unit must not be installed in turbulent air zones. Ensure
sufficiently long settling zones upstream and downstream of the tapping point. A
settling zone consists of a straight section of pipe or duct with no obstructions. Avoid
installation near filters, cooling coils, fans, etc. e sensor will achieve the optimal
result when the measurement is taken at least 7,5 duct diameters downstream and
at least 3 duct diameters upstream from any turns or flow obstructions.
ATTENTION
ATTENTION Installation of the unit near high EMI-emitting devices may lead to faulty
measurements. Use shielded wiring in areas with high EMI.
ATTENTION Keep at least 15 cm distance between the sensor lines and the 230 VAC power lines.
2.3 Install the probe at the desired depth and; in case you use the flange, fix it
via the plastic white screw in the flexible flange.
2.4 Unscrew the cover of the unit to remove it and insert the connecting cables
through the cable gland of theunit.
2.5 Do the wiring according to the wiring diagram (see Fig.4) adhering to the
information from section “Wiring and connections”.
Fig. 4 Wiring and connections
Analogue / modulating output 1 -
T (0—10 VDC/0—20 mA / PWM)
Analogue / modulating output 2 -
rH (0—10 VDC/0—20 mA / PWM)
Analogue / modulating output 3 - TVOC
(0—10 VDC/0—20 mA / PWM)
Modbus
RTU
A
/B
Supply voltage
DSVCF-R: 18—34 VDC
DSVCG-R: 18—34 VDC /
15—24 VAC ±10 %
3. Close the enclosure and secure it with the screws. Tighten the cable gland to
retain the IP rating of the enclosure.
4. Switch on the power supply.
5. Customise the factory settings to the desired ones via the 3SModbus software
or Sensistant (if necessary). For the default factory settings, see the Modbus
register map.

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DSVCX-R
MULTIFUNCTIONAL DUCT
TRANSMITTER
For the complete Modbus register data, refer to the product Modbus Register
Map, which is a separate document attached to the article code on the website
and contains the registers list. Products with earlier firmware versions may not be
compatible with this list.
NOTE
Optional settings
To assure correct communication, the NBT needs to be activated in only two devices
on the Modbus RTU network. If necessary, enable the NBT resistor via 3SModbus or
Sensistant (Holding register 9).
Example 1 Example 2
RX
ТX
NBT
NBT
Slave 2
Master
Slave n
Slave 1
Slave 2
Slave 1
RX
ТX
NBT
NBT
Master
Slave n
On a Modbus RTU network, two bus terminators (NBTs) need to be activated.
NOTE
Do not expose to direct sunlight!
CAUTION
e compounds released from plastics may influence the sensor readings. Please
allow several days for the sensor to stabilize before you obtain the accurate
values.
NOTE
OPERATING INSTRUCTIONS
NOTE For detailed information and settings, refer to the product Modbus register map,
which is attached to the article code on our website.
NOTE e warm-up time for the sensor to attain its highest accuracy and performance
level once the voltage supply has been applied is 15 minutes. During the warm-up
period, TVOC measurements will return 0 ppb.
Calibration procedure
Sensor calibration is not necessary.
In the unlikely event of TVOC sensor element failure, this component can be replaced.
All sensor elements are calibrated and tested in our factory.
Bootloader
anks to the bootloader functionality, the unit firmware can be updated via Modbus
RTU communication. With 3SM boot Application (part of 3SM center software
suite), ‘boot mode’ is automatically activated and the firmware can be updated.
NOTE Make sure the power supply does not get interrupted during “bootload” procedure,
otherwise you risk losing unsaved data.

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DSVCX-R
MULTIFUNCTIONAL DUCT
TRANSMITTER
VERIFICATION OF INSTALLATION
If your unit does not function as expected, please check the connections.
TRANSPORT AND STORAGE
Avoid shocks and extreme conditions; stock in original packing.
WARRANTY AND RESTRICTIONS
Two years from the delivery date against defects in manufacturing. Any modifications
or alterations to the product after the date of publication relieve the manufacturer
of any responsibilities. e manufacturer bears no responsibility for any misprints or
mistakes in this data.
MAINTENANCE
In normal conditions this product is maintenance-free. If soiled, clean with a dry or
damp cloth. In case of heavy pollution, clean with a non-aggressive product. In these
circumstances the unit should be disconnected from the supply. Pay attention that
no fluids enter the unit. Only reconnect it to the supply when it is completely dry.