AC motor 5 A | duct temperature or humidity control | 5 steps

Transformer fan speed controller with Modbus RTU communication for manually or demand-based fan speed regulation. The supply voltage ranges from 115 to 230 VAC. It can be used for single-phase motors. The maximum motor current (combined) is 5 A. Modbus communication is used to control the RTVS8 series. To adjust the requested fan speed, a Sentera HVAC sensor, potentiometer (SPV series), Modbus I/O module, or BMS system can be used. The fan speed can be adjusted manually or automatically based on the temperature, relative humidity, CO2 and air quality (TVOC). The fan speed is controlled by gradually varying the motor voltage. The autotransformer technology produces a perfect sinusoidal motor voltage. This ensures that the motor runs quietly. The electrical noise from the autotransformers is reduced by a special impregnated coating. Surface mounting is possible (IP54 protection).

This HVAC transmitter measures temperature and relative humidity in air ducts. The dew point is calculated using the measured values. The power supply is 24 V DC PoM. This means that one RJ45 connector can connect Modbus RTU communication and a 24 V DC power supply. The sensor makes use of Modbus RTU communication to transmit the measured values. It can also be used to change several other the settings.