www.sentera.eu
MIW-RTVS8-EN-000 - 16 / 02 / 2022
4 - 13
RTVS8
115—230 VAC TRANSFORMER FAN SPEED
CONTROLLER WITH MODBUS RTU COMMUNICATION
PRODUCT DESCRIPTION
The 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. They are equipped with auto-transformer(s) and
feature Modbus RTU communication and TK monitoring for thermal motor protection.
The 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
