Siemens 300781 fault code meaning

Series: SIMODRIVE 611D

No-load current greater than power unit rated current

servo drive

Meaning: On the basis of its no-load current (MD 1136: $MD_MOTOR_NOLOAD_CURRENT (motor no-load current), the connected motor is too large for the power section in use (continuous thermal current MD 1108: $MD_INVERTER_MAX_THERMAL_CURR (current limit for power section). 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