Description
The PWM slave controller is an analog electronic device designed to modulate the effective voltage applied to single-phase loads, especially class F asynchronous motors compatible with phase-cut control.
It operates in Slave mode, receiving a PWM (Pulse-Width Modulation) signal from a master device to continuously control the output VAC voltage on a proportional basis, from 0% to 100%, on the basis of the command signal duty cycle.
Using phase-cut control balanced with the main supply technology, it allows the speed of axial, radial or centrifugal fans to be changed accurately and silently in air-conditioning, refrigeration, ventilation, heating, destratification or air purifying systems.
The device is equipped with a Class B EMC filter and includes protection against power surges of up to 275 Vac, ensuring a high level of stability in environments with critical electrical elements.
It is compatible with the main earthing systems (IT, TT, TN), ensuring flexibility and safety during installation.
Inputs, outputs and connectivity
- Control input: external PWM signal with compatible voltage and frequency.
- Analog output: continuously changing single-phase Vac voltage proportional to the PWM signal duty cycle.
Special features
- The output voltage varies proportionally to the PWM signal duty cycle, ensuring smooth, accurate control.
- Compatibility with 5 V PWM Vpp (peak to peak voltage) signals for standardized control.
- The integrated EMC filter ensures electromagnetic compatibility, reducing noise.
- Protection against temporary power surges of up to 4 kV, increasing the safety and longevity of the system.
- Designed to reduce energy losses to a minimum during speed control, increasing the overall efficiency of the system.
- Suitable for use in a vast range of earthing systems, with easy installation.
Technical specifications
