Siemens A01550 fault code meaning
Siemens / A01550
Series: S200
Network security: Drive data encryption invalid
servo drive
Meaning: There is a mismatch between the password for drive data encryption (Drive Data Encryption, abbreviated as DDE) and the password configured in the converter, or no password has been configured. The DDE password protects sensitive data on the SD card. Without the password, the data backup on the SD card cannot be imported.
Possible causes
Source: SINAMICS S200 Compact_SIMOTICS S-1FL2 and S-1FL1 P470