Siemens F055 fault code meaning
Siemens / F055
Series: 6RA70
No field characteristic curve recorded
DC drive
Meaning: (Valid in operating states – –, I, II.) Possible fault causes: The field-weakening optimization run (P051=27) has not yet been performed. 1 P170 = 1 ("Torque control") selected, but "no valid field characteristic curve has yet been recorded" (P117=0). 2 P081 = 1 ("Speed-dependent field weakening") selected, but "no valid field characteristic curve has yet been recorded" (P117=0).
Possible causes
Source: 6ra70_c P432