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AC motor 3,5 A | TVOC based fan speed control - 5 steps

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Article code RT7DSM---001
Current stock 5 U.
Factory lead time 4 Week(s)

Solution description

Air quality based fan speed control for single-phase motors. The maximum motor current is 3,5 A. AC fan speed is automatically controlled to keep the measured TVOC level within range. The RTVS1 transformer fan speed controller regulates the motor speed in steps. Forward or reverse mode can be selected. The HVAC transmitter receives 24 VDC supply voltage via the RTVS1 controller. All settings can be adjusted via Modbus RTU communication. With this solution, it is also possible to fan speed in function of temperature or relative humidity. If the motor is equipped with thermal contacts (TK), RTVS1 can detect motor overheating in an early stage and disable the motor to prevent damage.

Components of this solution

Article code
Quantity
Description

RTVS1-35L22

1 U.

This transformer fan speed controller controls fan speed manually or on demand. It controls a single-phase motor. The supply voltage is 230 VAC the RTVS1 is Modbus controlled, allowing the use of a Sentera HVAC sensor, potentiometer (SPV series) or BMS system with Modbus RTU communication to adjust the desired fan speed. The fan speed can be adjusted manually or depending on temperature, relative humidity, CO2 content or air quality (TVOC). Fan speed is controlled by varying the motor voltage in steps. The autotransformer technology produces a perfectly sinusoidal motor voltage. This ensures quiet operation of the motor. A special impregnation coating reduces electrical noise from the autotransformer. The plastic housing can be surface mounted (protection class IP54).

DSVCM-R

1 U.

Duct CO2 transmitter. It measures temperature, relative humidity and TVOC in air ducts. The supply voltage is 24 VDC PoM - this means that Modbus RTU communication and 24 VDC power supply can be connected via one RJ45 connector. The measured values are transmitted via Modbus RTU communication. The TVOC sensor element is replaceable. All settings can be adjusted via Modbus RTU.

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