PCS2REXB_a129 — Loss Of Zcd Event Control

Full alert identifier: PCS2REXB_a129_lossOfZcdEventControl

Alert description

The Power Conversion System (PCS2) has detected that one of its DCDC stage's resonant tank current zero-crossing event measured timing is continuously out of our control

Potential impact

The impacted DCDC stage may have a hardware integrity issue and may not be able to deliver power to its output

Set condition

The Power Conversion System (PCS2) has detected the resonant tank's zero-crossing behavior is out of its control, resulting in zero-crossing event measured timing being irrational

Clear condition

The Power Conversion System (PCS2) no longer detects the irrational resonant tank current zero-crossing event measurement on that DCDC stage

Signals to check

These diagnostic fields are associated with PCS2REXB_a129. Check the alert's Alert Log in Service Mode Plus for available values.

Signal	Unit
Commanded Switch Freq `PCS2REXB_a129_commandedSwitchFreq`	kHz
Hv Bus Voltage `PCS2REXB_a129_hvBusVoltage`	V
Instant Measured ZCD Event `PCS2REXB_a129_instantMeasuredZCDEvent`	ns
Instant Measured ZCD Half Prd PU `PCS2REXB_a129_instantMeasuredZCDHalfPrdPU`	—
Lv Bus Voltage `PCS2REXB_a129_lvBusVoltage`	V

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of PCS2REXB_a129.