Siemens A910 fault code meaning
Siemens / A910
Series: V20
Vdc_max controller inhibited
converter
Meaning: This may occur under the following conditions: The supply voltage (P0210) remains too high. The motor is driven by an active load, causing it to enter regenerative mode. Ramp-down occurs with very high load inertia. If alarm A910 occurs while the converter is in standby (output pulses inhibited) and a ON command is subsequently issued, then when alarm A910 is cleared (A911).
Possible causes
Source: SINAMICS V20 Converter P420