PROEL HPX Series - HPX1200;2400;2800 SMPS Control Circuit Analysis; SMPS Control Module Circuit Malfunction Analysis

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8HPX1200/2400/2800Malfunction Analysis on SMPSCONTROL
Circuit
8.1CircuitDiagramofSMPSCONTROL
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8.2MalfunctionAnalysisonSMPSCONTROLModuleCircuit
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Sequence
No.
Circuit
Function
Failure
1 SMPSControl
‐ Theequipmentisunavailabletostart;
‐ Protectionfunctionwillbeactivatedwheninlowimpedanceoutput;
‐ Cyclicprotectionoftheswitchpower;
‐ Delay start, over‐voltage PROT, low‐voltage PROT and over current
PROT.
RepairingGuide:
1)Whenrepairingthecontrolboard,youcancuteveryprotectcircuitgraduallyfoundthedefective
area!