Swaping to lower size motor on Hitachi SJ300 VFD

[krokodiliukas]

What settings need to be changed to put 15HP motor instead of current 20HP on Hitachi's SJ300-150LFU. On Altivar VFD's its usually thermal and nominal currents, but on Sj300 manual I found only I₀ in H parameters section without explanation.
Thanks

 

[DickDV]

There has to be somewhere in the drive where you insert motor nameplate data so the overload protection will work.

Using a different size motor simply involves inserting the new nameplate info into the drive. You may want to evaluate the current and torque limits as well.