Siemens 300503 fault code meaning

Series: SIMODRIVE 611D

Maximum phase S current monitoring

servo drive

Meaning: The phase current S is greater than or equal to 1.05 times the maximum power section current MD 1107: $MD_INVERTER_MAX_CURRENT (transistor limit current).

Possible causes

Source: SINUMERIK 840D/840Di/810D Diagnostics Manual 11/2006 (EN, Siemens official site) 2.3 SIMODRIVE ALARMS