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sinusoidal output filter "SF1" - ensures converter output voltage to reach the desired sine waveform. If there is minimum radio interference emission demand (e.g. theatres), screened interconnecting cables between a converter and a motor do not have to be used when using sinusoidal output filter. Sinusoidal output filter completely eliminates overvoltage spikes on output (motor) terminals. It can be connected directly to the output terminals of frequency converter. If using sinusoidal output filter, it is necessary to set sampling frequency (parameter 9.1.1) rating from 5 ÷ 10 kHz and frequency converter cannot operate in vector control mode.
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