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Summary of Contents for Sentera Controls RTVS1
- Page 1 RTVS1 TRANSFORMER FAN SPEED CONTROLLER WITH MODBUS RTU COMMUNICATION Mounting and operating instructions...
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Page 2: Table Of Contents
INTENDED AREA OF USE TECHNICAL DATA STANDARDS WIRING AND CONNECTIONS MOUNTING INSTRUCTIONS IN STEPS OPERATING INSTRUCTIONS VERIFICATION OF INSTALLATION TRANSPORT AND STORAGE WARRANTY AND RESTRICTIONS MAINTENANCE MIW-RTVS1-EN-000 - 03 / 11 / 2020 2 - 12 www.sentera.eu back to the table of contents... -
Page 3: Safety And Precautions
In case there are any questions that are not answered, please contact your technical support or consult a professional. MIW-RTVS1-EN-000 - 03 / 11 / 2020 3 - 12 www.sentera.eu... -
Page 4: Product Description
TRANSFORMER FAN SPEED CONTROLLER WITH MODBUS RTU COMMUNICATION PRODUCT DESCRIPTION The RTVS1 series of transformer fan speed controllers regulate the rotational speed of single-phase voltage controllable motors in five steps by varying the output voltage. They are equipped with auto-transformer(s) and feature Modbus RTU communication, TK monitoring for thermal motor protection. -
Page 5: Wiring And Connections
Do not connect to your computer Pin 8 8 mm 8 mm 8 mm 8 mm 24 VDC ATTENTION Make sure you use cables with an appropriate diameter. MIW-RTVS1-EN-000 - 03 / 11 / 2020 5 - 12 www.sentera.eu back to the table of contents... -
Page 6: Mounting Instructions In Steps
The relay output contacts are Normal Open (NO) type - 16 A resistive with 230 VAC supply. The functionality of the unregulated output can be selected via Modbus through Holding register 19. By default, the unregulated output MIW-RTVS1-EN-000 - 03 / 11 / 2020 6 - 12 www.sentera.eu... - Page 7 Optional settings In automatic mode, a Sentera potentiometer with Modbus RTU communication can be connected to RTVS1. To obtain demand based fan speed control, RTVS1 can be combined with a Sentera HVAC sensor. The combination of RTVS1 with a Sentera HVAC transmitter allows you to control fan speed in function of temperature, relative humidity, carbon dioxide, air quality (TVOC) or carbon monoxide.
- Page 8 NO T E On a Modbus RTU network, two bus terminators (NBTs) need to be activated. CAUTION Do not expose to direct sunlight! MIW-RTVS1-EN-000 - 03 / 11 / 2020 8 - 12 www.sentera.eu back to the table of contents...
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Page 9: Operating Instructions
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). MIW-RTVS1-EN-000 - 03 / 11 / 2020 9 - 12 www.sentera.eu... - Page 10 (see Fig. 5). Fig. 5 Automatic mode ‘reverse’: High to low speed Uout (VAC) Hysteresis 2—10 % Modbus RTU control signal MIW-RTVS1-EN-000 - 03 / 11 / 2020 10 - 12 www.sentera.eu back to the table of contents...
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Page 11: Verification Of Installation
Set to 0 = OFF, when there is Modbus Timeout set, when the device encounters Timeout - RTVS1 enters STOP mode, output is 0. If the remote sensor is lost – device enters state 0 = OFF. Both communications lost, article goes to OFF. -
Page 12: Transport And Storage
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. MIW-RTVS1-EN-000 - 03 / 11 / 2020 12 - 12 www.sentera.eu...
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