Siemens 783 fault code meaning
Siemens / 783
Series: SIMODRIVE 611U
Invalid rotor resistance for motor %d
servo drive
Meaning: The rotor resistance (P1138, cold) of the motor is zero or there was a format overflow for an internal conversion.
Possible causes
Source: SIMODRIVE 611 universal Function Manual FBU 05/2010 (EN, Siemens official site) 7.3