Cause : Electronic thermal relay function pre-alarm comes when the cumulative value of the electronic thermal relay reaches or exceeds 85% of the preset level. If the cumulative value reaches or exceeds the specified value, the protection circuit is activated to stop the outputs of the multifunction regeneration converter.

The THP signal can be simultaneously output with the indication "TH" displayed. For the terminal used for the THP signal output, set "8 (positive logic)" or "108 (negative logic)" in any of Pr.11, Pr.12, and Pr.16 (Output terminal function selection) to assign the function.