Siemens 749 fault code meaning
Siemens / 749
Series: SIMODRIVE 611U
Insufficient speed measurement range
servo drive
Meaning: The maximum speed which can be achieved with speed feedback can- 7 not be measured using the module.
Possible causes
Source: SIMODRIVE 611 universal Function Manual FBU 05/2010 (EN, Siemens official site) 7.3