Siemens F01950 fault code meaning
Siemens / F01950
Series: DCM-6RA80
PB/PN: Isochronous synchronization failure
DC drive
Meaning: Synchronization of the internal cycle with the global control telegram failed. The internal cycle has an incorrect offset.
Possible causes
Source: SINAMICS DCM, Parameter Manual, firmware version 1.5 SP2 (based on 5.1 SP2) P986
Series: G120-CU250S-2
PB/PN Isochronous synchronization failure
converter
Meaning: Synchronization of the internal cycle with the global control telegram failed. The internal cycle has an incorrect offset.
Possible causes
Source: SINAMICS G120, Control Unit CU250S-2 P1342
Series: G130-G150, S120-S150
PB/PN: Isochronous synchronization failure
converter
Meaning: Synchronization of the internal cycle with the global control telegram failed. The internal cycle has an incorrect offset.
Possible causes
Source: SINAMICS G130_G150 P1559; SINAMICS S120_S150 P2668
Series: G200, G210, G210X, S220
PN: Synchronization failure in isochronous operation
converter
Meaning: Synchronization of the internal cycle with the controller cycle failed. The internal cycle has an incorrect offset.
Possible causes
Source: SINAMICS G200 converter P685; SINAMICS G210 converter P1078; SINAMICS G210X converter P940; SINAMICS S220 converter P2194
Series: G220
PN: Synchronization failure in isochronous operation
converter
Meaning: Synchronization of the internal cycle with the controller cycle failed. The internal cycle has an incorrect offset. Faults and alarms 5.2 List of faults and alarms SINAMICS G220 Converter 1282 Parameter Manual, 07/2026, FW V6.7, A5E51781505C AD
Possible causes
Source: SINAMICS G220 Converter P1284
Series: S110
PB/PN Isochronous synchronization failure
servo drive
Meaning: Synchronization of the internal cycle with the global control telegram failed. The internal cycle has an incorrect offset.
Possible causes
Source: SINAMICS S110 P991
Series: S200
PN: Synchronization failure in isochronous operation
servo drive
Meaning: Synchronization of the internal cycle with the controller cycle failed. The internal cycle has an incorrect offset.
Possible causes
Source: SINAMICS S200 PROFINET_SIMOTICS S-1FL2 P502
Series: S210
PN: Synchronization failure in isochronous operation
servo drive
Meaning: Synchronization of the internal cycle with the global control telegram has failed. The internal cycle has an incorrect offset. Faults and alarms 18.2 Fault and alarm list SINAMICS S210 servo drive system with S-1FK2 and S-1FT2 880 Operating Instructions, 09/2022, A5E41702836F AL
Possible causes
Source: SINAMICS S210_SIMOTICS S-1FK2 and S-1FT2 P882