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

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TRANSFORMER FAN SPEED CONTROLLER WITH 
MODBUS RTU COMMUNICATION

RTVS1

 

ATTENTION

Avoid exposing the controller to direct sunlight!

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. 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 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.

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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