Siemens 891 fault code meaning
Siemens / 891
Series: SIMODRIVE 611U
PLUS software limit switch actuated coupled
servo drive
Meaning: With the actual master drive velocity, this coupling axis will probably reach or pass the PLUS software limit switch. This warning is output if the coupled axis has fallen below 200% of the braking travel up to the PLUS software limit switch.
Possible causes
Source: SIMODRIVE 611 universal Function Manual FBU 05/2010 (EN, Siemens official site) 7.3