Siemens 300790 fault code meaning
Siemens / 300790
Series: SIMODRIVE 611D
Changeover speed/velocity too small
servo drive
Meaning: With the selected setting of MD1466, the induced voltage is too small in the lower speed range in order to be able to guarantee safe, sensorless operation. With the specified speed, the induced voltage must at least reach 40 V (phase-to-phase, effective).
Possible causes
Source: SINUMERIK 840D/840Di/810D Diagnostics Manual 11/2006 (EN, Siemens official site) 2.3 SIMODRIVE ALARMS