You press the ‘P’ key, but nothing happens. The manual reveals that parameter access is controlled by a (default is often 0 or 100 ). It explains how to perform a "Master Reset" (usually shorting two pins on the rear during power-up). Never do this without reading the section on data loss first.

: Specialized archive sites such as ManualsLib sometimes host older PDF scans for discontinued ABB automation hardware.

According to general ABB installation protocols, work on high-voltage controllers should only be performed by qualified personnel.