Sentera Controls RTVS8 Series Manuale di servizio

RTVS8 115—230 VAC TRANSFORMER

FAN SPEED CONTROLLER WITH

MODBUS RTU COMMUNICATION

Mounting and operating instructions

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RTVS8 115—230 VAC TRANSFORMER FAN SPEED

CONTROLLER WITH MODBUS RTU COMMUNICATION

Table of contents

SAFETY AND PRECAUTIONS 3

PRODUCT DESCRIPTION 4

ARTICLE CODES 4

INTENDED AREA OF USE 4

TECHNICAL DATA 4

STANDARDS 4

WIRING AND CONNECTIONS 5

MOUNTING INSTRUCTIONS IN STEPS 6

OPERATING INSTRUCTIONS 10

VERIFICATION OF INSTALLATION 12

TRANSPORT AND STORAGE 13

WARRANTY AND RESTRICTIONS 13

MAINTENANCE 13

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RTVS8 115—230 VAC TRANSFORMER FAN SPEED

CONTROLLER WITH MODBUS RTU COMMUNICATION

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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RTVS8 115—230 VAC TRANSFORMER FAN SPEED

CONTROLLER WITH MODBUS RTU COMMUNICATION

PRODUCT DESCRIPTION

e RTVS8 series of transformer fan speed controllers are intended for regulating the

speed of single-phase voltage controllable motors (115—230 VAC / 50—60 Hz) in ﬁve

steps by varying the output voltage. ey are equipped with auto-transformer(s) and

feature Modbus RTU communication and TK monitoring for thermal motor protection.

e unit can be controlled both in automatic mode or in manual mode. In manual mode,

the unit functions as a 5-step controller. In automatic mode, the unit can be connected

to a Sentera device allowing the unit to be used for demand-based ventilation.

ARTICLE CODES

Article code Supply voltage 115—230 VAC, Imax [A] Fuse (5*20 mm) [A]

RTVS8-15L22 1,5 T-2,5 A-H

RTVS8-25L22 2,5 T-4 A-H

RTVS8-35L22 3,5 T-5 A-H

RTVS8-50L22 5 T-8 A-H

RTVS8-75L22 7,5 T-10 A-H

INTENDED AREA OF USE

■Fan speed control of voltage controllable motors (pumps and fans) in ventilation

systems

■Demand based ventilation in greenhouses, sheds and stables.

■Ventilation based on temperature, relative humidity, carbon dioxide, air quality

(TVOC), carbon monoxide or nitrogen dioxide. Selection can be made via Modbus

holding register 18

■For indoor use, surface mounted

TECHNICAL DATA

■Supply voltage: 115—230 VAC / 50—60 Hz

■Modbus RTU communication

■TK monitoring function for thermal motor protection

■Controlled by analogue signal via DADCM

■Operating modes:

►Automatic (from low to high or from high to low): Fan speed based on input from

external Sentera sensor, DADCM 0-10 Volt module or digital potentiometer (SPV

series) connected to the RJ45 master socket

►Manual: Fan speed based on user input via Modbus Holding Register 12

■Selectable output update interval from 5 seconds to 10 minutes

■Autotransformer with voltage taps (0 / 80 / 110 / 140 / 170 / 190 / 230 VAC for

230 VAC supply and 0 / 40 / 55 / 70 / 85 / 95 / 115 VAC for 115 supply)

■LED status indication

■Modbus RTU communication via RJ45 connectors

■Unregulated ouput (relay output) 115 VAC or 230 VAC (Imax 16 A, resistive load)

■Bootloader for uploading new ﬁrmware via Modbus RTU

■Enclosure: plastic (R-ABS, UL94-V0, grey RAL 7035)

■Protection standard: IP54 (according to EN 60529)

■Operating ambient conditions:

►Temperature: -10—35 °C

►Rel. humidity: 5—85 % rH (non-condensing)

STANDARDS

■Low Voltage Directive 2014/35/EC:

►EN 60529:1991 Degrees of protection provided by enclosures (IP Code)

Amendment AC:1993 to EN 60529

►EN 60730-1:2011 Automatic electrical controls for household and similar use -

Part 1: General requirements

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RTVS8 115—230 VAC TRANSFORMER FAN SPEED

CONTROLLER WITH MODBUS RTU COMMUNICATION

■EMC Directive 2014/30/EC:

►EN 60730-1:2011 Automatic electrical controls for household and similar use -

Part 1: General requirements

►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

■WEEE Directive 2012/19/EC

■RoHs Directive 2011/65/EC

WIRING AND CONNECTIONS

Wiring and connections

Terminal block

MOTOR

Regulated output to motor, neutral

L Regulated output to motor, line

Pe Protective earth terminal

RELAY

Unregulated output that can be set manually (ON/OFF) or

automatically via Modbus Holding register 19 and 15

INPUT

Power supply, neutral

L Power supply, phase (230 VAC / 50—60 Hz)

TK Input - TK monitoring for thermal motor protection

2 - RJ45 master socket - to connect a Sentera sensor-transmitter for demand

based control, or a digital potentiometer for manual control

Pin 1 24 VDC Supply voltage

Pin 2

Pin 3 AModbus RTU communication, signal A

Pin 4

Pin 5 /B Modbus RTU communication, signal /B

Pin 6

Pin 7 GND Ground, supply voltage

Pin 8

3 - RJ45 gateway - to connect a computer with 3SModbus software, Sentera

internet gateway or a BMS system

Pin 1 Do not connect to your computer

Pin 2

Pin 3 AModbus RTU communication, signal A

Pin 4

Pin 5 /B Modbus RTU communication, signal /B

Pin 6

Pin 7 Do not connect to your computer

Pin 8

GND

24 VDC

8 mm

RJ45

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RTVS8 115—230 VAC TRANSFORMER FAN SPEED

CONTROLLER WITH MODBUS RTU COMMUNICATION

ATTENTION Make sure you use cables with an appropriate diameter.

MOUNTING INSTRUCTIONS IN STEPS

Before you start mounting the unit, read carefully “Safety and Precautions”and

follow these steps. Choose a smooth solid surface for installation (a wall, panel,

etc.).

Follow these steps:

1. Unscrew the front cover and open the enclosure. Mind the ﬂat cable that connects

the LEDs with the printed circuit board.

2. Fix the unit onto the wall or panel using the provided screws and dowels. Mind the

correct mounting position and unit mounting dimensions. (See Fig.1 Mounting

dimensions and Fig.2 Mounting position).

3. Pay attention to the following instructions in order to minimize the operating

temperature:

3.1 Respect the distances both between the wall / ceiling and the device

and between two devices as shown in Fig.2. In order to ensure suﬃcient

ventilation of the controller, clearance on every side has to be maintained.

3.2 When installing the device, please keep in mind that the higher you install

it, the warmer the device will get. For example, in a technical room the

correct installation height can be of great importance. Do not install the

controller above heating equipment or heat sources.

3.3 If maximum ambient temperature cannot be adhered to, please provide

extra forced ventilation / cooling.

Not respecting the above listed rules can reduce service life and relieves the

manufacturer of any responsibilities.

Fig. 1 Mounting dimensions Fig. 2 Mounting position

200

280

305

140

120

Correct Incorrect

50 mm

100 mm

75 mm

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RTVS8 115—230 VAC TRANSFORMER FAN SPEED

CONTROLLER WITH MODBUS RTU COMMUNICATION

4. Insert the cables through the cable glands and do the wiring according to the

wiring diagram (see Fig. 3) while adhering to the information from section

“Wiring and connections” above.

4.1 Connect the power supply line (terminals L, N marked as INPUT and Pe);

4.2 Connect the motor terminals (L and N marked as MOTOR and Pe);

4.3 If applicable, connect the unregulated output (L and N marked as RELAY).

e relay output contacts are Normal Open (NO) type - 16 A resistive with

115—230 VAC supply. e functionality of the unregulated output can

be selected via Modbus through Holding register 19. By default (factory

setting), the unregulated output indicates alarm conditions and can be

used for connecting an alarm indication device - e.g. a lamp, buzzer, etc.

4.4 Connect the TK contacts for monitoring of the thermal motor protection to

the motor TK terminals.

A safety isolator / disconnect switch should be installed on the mains electricity

side of all motor drives.

ATTENTION

Fig. 3 Wiring and connections

RJ45 master socket - to

connect Sentera HVAC

transmitter or potentiometer

RJ45 Gateway - to connect PC

with 3SModbus software

Regulated output to

motor

Relay output (unregulated output)

NO Contact, 115—230 VAC

Power supply

115—230VAC/50—60Hz

TK monitoring for thermal

motor protection

Make sure the connections are correct before you power the unit.

ATTENTION

5. Close the cover and secure it with the screws.

6. Tighten the cable glands.

7. Switch on the mains supply.

8. Customise the factory settings to the desired ones via the 3SModbus software

or Sensistant. For the default factory setting, see the Modbus register map.

e desired fan speed can be modﬁed via Modbus holding register 12, or set

automatically via Modbus holding register 18, according to connected sensor

output value.

For the complete Modbus register data, see the Modbus Register Map of the

product. is is a separate document linked to the article code on the website

containing the list of registers. Products with earlier ﬁrmware versions may not

be compatible with this list.

NOTE

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RTVS8 115—230 VAC TRANSFORMER FAN SPEED

CONTROLLER WITH MODBUS RTU COMMUNICATION

Optional settings

1. In automatic mode, a Sentera potentiometer with Modbus RTU communication

can be connected to RTVS8. Via the optional DADCM analogue input module,

RTVS8 series can be controlled via an external 0-10 Volt signal. To obtain

demand based fan speed control, RTVS8 can be combined with a Sentera HVAC

sensor. e combination of RTVS8 with a Sentera HVAC transmitter allows

you to control fan speed in function of temperature, relative humidity, carbon

dioxide, air quality (TVOC), carbon monoxide or nitrogen dioxide. e controlled

parameter can be selected in RTVS8 Modbus holding register 18.

Crimp the RJ45 cable for the Modbus Master connector and plug it into the socket.

It is used to connect RTVS8 to a Sentera transmitter, intelligent sensor, sensor

controller or potentiometer. Consult our website for possible combinations.

2. Crimp the RJ45 cable for the Modbus Slave connector and plug it into the socket.

It is used to connect the unit to a PC or another master device for monitoring

or manual control via Modbus holding register 12. To do so, you will need

Sentera’s Modbus to USB converter CNVT-USB-RS485-V2. To modify or monitor

parameters of a Sentera device via Modbus RTU, we advise using the 3SModbus

software.

e 3SModbus software is free and can be downloaded via our website: https://

www.sentera.eu/en/3SMCenter and installed on your computer. e Modbus to

USB converter CNVT-USB-RS485-V2 allows you to connect a Sentera device to

the USB port of your computer and to monitor or adjust the diﬀerent parameters.

See Application examples 1, 2, 3 and 4.

Application example 1: Manual mode - control via Modbus holding register 12

CNVT-USB-RS485-V2 Master

RTVS8

Application example 2: Automatic mode - demand based ventilation (i.e. control

via input from sensor)

RTVS8

Sentera HVAC

sensor

CO2

Application example 3: Automatic mode - control via analogue signal

RTVS8

0 - 10 V

DADCM

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RTVS8 115—230 VAC TRANSFORMER FAN SPEED

CONTROLLER WITH MODBUS RTU COMMUNICATION

Application example 4: Automatic mode - control via a digital potentiometer

RTVS8

SPV

series

3. 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

ТX

NBT

Slave 2

Master

Slave n

Slave 1

Slave 2

Slave 1

ТX

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

Voltage steps

e standard conﬁguration of the output voltages is as indicated in Table 1 below.

Table 1 Voltage steps

Steps 0 — 1 2 3 4 5

Wires —

Regulated output [230 VAC]

Voltages** 080*110 140 170 190 230

Regulated output [115 VAC]

Voltages** 040*55 70 85 95 115

*Available but not connected.

**Because more than 5 output voltages are available, it is possible to adjust

the 5 steps by changing the internal wiring

Table 2 Voltage steps

Steps* 0 1 2 3 4 5

Auto forward

mode default

values

0 % 17 % 34 % 51 % 68 % 85 %

Auto reverse mode

default values - 0 % 75 % 50 % 25 % 1 %

* Each level can take a value from 0 to 100 %.

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RTVS8 115—230 VAC TRANSFORMER FAN SPEED

CONTROLLER WITH MODBUS RTU COMMUNICATION

Operational diagram

115 VAC / 50—60 Hz power supply

115

(40)

20 40 60 80 95

110

140

170

190

230

(80)

20 40 60 80 95

Digital Control signal

(dynamic percentage) [%]

Hysteresis

2—10 %

U (VAC)/

Speed

230 VAC / 50—60 Hz power supply

115

(40)

20 40 60 80 95

110

140

170

190

230

(80)

20 40 60 80 95 Digital Control signal (dynamic

percentage) [%]

U (VAC)/

Speed

Hysteresis

2—10 %

OPERATING INSTRUCTIONS

NOTE On start-up the green COM LED blinks fast for 15 seconds to indicate that the

device is initialising.

■Make sure the connections are correct before you power the unit.

■Make sure the mains supply voltage is within the admissible rated maximum

current of the product.

ATTENTION

1. Switch oﬀ the mains power supply before connecting any power cables.

2. Install the connected sensor in an appropriate zone in order to measure the

relevant ambient conditions.

3. Select the operating mode via Modbus Holding Register 11. e default mode is

Automatic forward mode.

3.1 Manual mode

e value is taken by Holding Register 12, where you can set the desired

output step (see the steps and corresponding voltages in Table 1 above.)

3.2 Automatic modes

When Auto mode has been selected, the controller changes the ﬁve speeds

automatically according to the values measured by the sensor connected to

the RJ45 master socket. ere are two automatic modes:

Questo manuale è adatto per i seguenti modelli

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