F20.11

STO – switching delay

SEW Eurodrive · MOVIDRIVE system

What does F20.11 mean?

A switching delay has been detected between the two Safe Torque Off (STO) channels. This indicates a potential malfunction within the safety circuit, which compromises the safety integrity of the drive and risks uncontrolled motor movement if not resolved.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Consult the safety manual for specific STO diagnostics and troubleshooting procedures.

Source: SEW Eurodrive MOVIDRIVE system
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