Siemens F7481 fault code meaning

Series: V90

EPOS: Axis position < negative software limit switch

servo drive

Meaning: The actual axis position is less than the negative software limit switch position. Correct the target position. See: p2580 (EPOS Negative software limit switch), p2582 (Activate EPOS software limit switch).

Possible causes

Source: SINAMICS V90 PROFINET, SIMOTICS S-1FL6 Operating Instructions P376