IndustrialDriveDataDrive Board & Diagnostic Database
Functional power board area

Generic VFD Brake Chopper Board Area

Switches regenerative DC-link energy into a braking resistor when bus voltage exceeds the braking threshold.

Record status

IdentifierGeneric functional record; some drives use internal chopper, others require external braking unit
Record typeFunctional power board area

Observed functional elements

Brake transistorGate driveBrake resistor terminalsThermal inputDC bus voltage feedbackResistor wiring

Diagnostic use

  • Overvoltage during deceleration
  • Brake resistor open/overheat routing
  • Common DC bus energy review

Linked circuit records

Circuit
VFD braking chopper and DC-bus discharge path

Routes excess DC-link energy into braking hardware or controlled overvoltage management during deceleration and overhauling-load events.

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