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MIW-RTVS8-EN-000 - 16 / 02 / 2022

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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). 
The relay output contacts are Normal Open (NO) type - 16 A resistive with 
115—230 VAC supply. The 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.

 

The 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. This 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

Содержание RTVS8 Series

Страница 1: ...RTVS8 115 230 VAC TRANSFORMER FAN SPEED CONTROLLER WITH MODBUS RTU COMMUNICATION Mounting and operating instructions ...

Страница 2: ...BUS 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 ...

Страница 3: ...ation 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 This 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 electr...

Страница 4: ... 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 exter...

Страница 5: ... motor neutral L Regulated output to motor line Pe Protective earth terminal N RELAY Unregulated output that can be set manually ON OFF or automatically via Modbus Holding register 19 and 15 L N INPUT Power supply neutral L Power supply phase 230 VAC 50 60 Hz TK Input TK monitoring for thermal motor protection TK 2 RJ45 master socket to connect a Sentera sensor transmitter for demand based control...

Страница 6: ...unting 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 in...

Страница 7: ...inals 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 ...

Страница 8: ... 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 Sen...

Страница 9: ...X 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 Voltage steps The 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 0 80 110 140 170 190 230 Regulated output 115 VAC Voltages 0 40 55 70 85 95 115...

Страница 10: ...evice 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 vi...

Страница 11: ... be ON above 51 and OFF below 49 An example of forward switching mode when Min Step 0 and Max Step 5 is given in Fig 4 below The thresholds are at 17 and hysteresis delta is set from 2 to 10 via Holding Register 16 see Fig 4 Fig 4 Automatic mode forward Low to high speed 68 85 110 0 140 170 190 230 17 34 51 Δ 25 50 75 100 1 0 Δ 140 170 190 230 Modbus RTU control signal Hysteresis 2 10 Uout VAC 3 2...

Страница 12: ...r is lost the article stays on the last step selected If both communications are lost device stays on the last step selected In Auto modes if there is no communication to the control monitoring station the article continues to operate autonomously while the sensor is connected 18 Sensor output register value number Select which sensor output will be used as input to the device Digital potentiomete...

Страница 13: ...fications or alterations to the product after the date of publication relieve the manufacturer of any responsibilities The 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 ...

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