Siemens F31 fault code meaning

Series: 6RA28

The transition from discontinuous to continuous armature current is set above the rated motor current via P71.

DC drive

Meaning: During the optimization run, the armature current at the transition from discontinuous to continuous conduction, established by setting P71, exceeds the rated motor current. Parameter L34 therefore cannot be adjusted further. The fault message applies only to parameter L34 that has not been set. P68=100 The armature current at the transition from discontinuous to continuous conduction exceeds the rated rectifier current. Incorrect feedforward control setting.

Possible causes

Source: 6RA28 Chinese Manual P81