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MIW-RTVS1-EN-000 - 03 / 11 / 2020

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SAFETY AND PRECAUTIONS

Read all the information, the datasheet, Modbus register maps, 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.

The 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. 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 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.

 

TRANSFORMER FAN SPEED CONTROLLER WITH 
MODBUS RTU COMMUNICATION

RTVS1

Summary of Contents for RTVS1

Page 1: ...Mounting and operating instructions TRANSFORMER FAN SPEED CONTROLLER WITH MODBUS RTU COMMUNICATION RTVS1 ...

Page 2: ...SCRIPTION 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 9 VERIFICATION OF INSTALLATION 11 TRANSPORT AND STORAGE 12 WARRANTY AND RESTRICTIONS 12 MAINTENANCE 12 TRANSFORMER FAN SPEED CONTROLLER WITH MODBUS RTU COMMUNICATION RTVS1 ...

Page 3: ...t 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 electrical parts Always disconnect the power supply before connecting servic...

Page 4: ...mounted Selection can be made via RTVS1 Modbus holding register 20 TECHNICAL DATA Supply voltage 230 VAC 50 60 Hz Modbus RTU communication TK monitoring for thermal motor protection Operating modes Automatic from low to high or from high to low Fan speed based on input from external Sentera sensor or potentiometer connected to the RJ45 master socket Manual Fan speed based on user input via Modbus ...

Page 5: ... be activated manually via Modbus Holding register 14 or automatically in case of an RTVS1 alarm L N INPUT Power supply neutral L Power supply phase 230 VAC 50 60 Hz TK Input TK monitoring for thermal motor protection TK RJ45 master socket to connect a Sentera HVAC transmitter for demand based fan speed control in automatic mode Pin 1 24 VDC Supply voltage Pin 2 Pin 3 A Modbus RTU communication si...

Page 6: ...he 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 abovelisted rules can reduce service life and relieves the manufacturer of any respons...

Page 7: ...the 3SModbus software or Sensistant For the default factory setting see the Modbus register map The desired fan speed can be adjusted via Modbus holding register 14 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 NOTE Optional settings 1 In automatic mode a Senter...

Page 8: ...lled on your computer The Modbus to USB converter CNVT USB RS485 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 and 2 Application example 1 Manual mode control via Modbus holding register 14 CNVT USB RS485 Master RTVS1 A B GND Application example 2 Automatic mode demand based ventilation RTVS1 Sla...

Page 9: ...orward mode 3 1 Manual mode The 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 There are two automatic modes 3 2 1 Autom...

Page 10: ... diagram below for an example with steps from 2 to 5 An example of Auto Reverse mode the steps threshold configuration is as follows Step 1 0 Step 2 75 Step 3 50 Step 4 25 Step 5 1 can be as low as 0 1 is given in Fig 5 below When the Input value is above 1 device switches to Step 5 above 25 Step 4 above 50 Step 3 above 75 Step 2 up to 100 When the Input value decreases the hysteresis delta is sub...

Page 11: ... the sensor if sensor 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 ...

Page 12: ...n manufacturing Any modifications 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 ...

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