Siemens F51 fault code meaning

Series: 6RA28

Thyristor cannot be triggered (gate G11

DC drive

Meaning: Possible causes: Open gate circuit wiring, an electronic board fault, a gate circuit board fault, or an interruption in the internal gate circuit of the thyristor.

Possible causes

Source: 6RA28 Chinese Manual P85

Series: V20

Parameter EEPROM fault

converter

Meaning: Some parameters may have been read incorrectly, so the converter must be power-cycled to clear this fault. If EEPROM is full, reset some parameters to their default values, then power-cycle the converter.

Possible causes

Source: SINAMICS V20 converter P36