Siemens A01983 fault code meaning
Siemens / A01983
Series: G130-G150, S120-S150
PN: System redundancy switchover in progress
converter
Meaning: The "PROFINET system redundancy" function is configured, and the connection between the primary controller and the drive unit has been interrupted. The backup controller takes over master control of the drive unit.
Possible causes
Source: SINAMICS G130_G150 P1562; SINAMICS S120_S150 P2672
Series: G200, G210, G210X, G220
PN: System redundancy switchover in progress
converter
Meaning: The "PROFINET system redundancy" function is configured, and the connection between the primary controller and the converter has been interrupted. The standby controller takes master control of the converter.
Possible causes
Source: SINAMICS G200 Basic converter P562; SINAMICS G210 converter P1080; SINAMICS G210X converter P942; SINAMICS G220 converter P1287
Series: S220
PN: System redundancy switchover in progress
converter
Meaning: The "PROFINET system redundancy" function is configured, and the connection between the primary controller and the converter has been interrupted. The standby controller takes master control of the converter. Faults and alarms 5.5 Fault and alarm list SINAMICS S220 Converter 2196 Parameter Manual, 08/2026, FW V6.7, A5E53307549F AB
Possible causes
Source: SINAMICS S220 Converter P2198