Danfoss TTS400

4.28 Bearing Pulse Width Modulator Amplifier
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Figure 4-251 PWM
4.28.1 PWM Function
ThePWMAmplifiersuppliescurrenttotheradialandaxialmagneticbearingcoilsascommandedbytheBMCC.In
return,thePWMpassesfeedbackfromthecurrentsensorforthebearingcoilstotheBMCC.RefertoFigure4-252
BearingControlSignalFlowonpage226.
TheBackplaneprovidesthePWMwith+5VDCwithrespectto0VDC,alongwith+17VDCandHV+(at250VDC)both
withrespecttoHV-.
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M-SV-001-EN Rev. H-1/23/2023 Page 225 of 294