Siemens 300779 fault code meaning
Siemens / 300779
Series: SIMODRIVE 611D
Motor moment of inertia is less than or equal to zero
servo drive
Meaning: The value in MD 1117: $MD_MOTOR_INERTIA (motor moment of inertia) is less than or equal to zero. The alarm can be reprogrammed in the MD ALARM_REACTION_CHAN_NOREADY (channel not ready).
Possible causes
Source: SINUMERIK 840D/840Di/810D Diagnostics Manual 11/2006 (EN, Siemens official site) 2.3 SIMODRIVE ALARMS