Siemens A29046 fault code meaning
Siemens / A29046
Series: S220
Infeed: Power unit undervoltage alarm
converter
Meaning: A problem occurred with the power supply to the power unit before the last restart. Voltage monitoring in the internal FPGA of PSA issued a signal indicating an undervoltage fault in the module.
Possible causes
Source: SINAMICS S220 converter P2421