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Swaping to lower size motor on Hitachi SJ300 VFD

Swaping to lower size motor on Hitachi SJ300 VFD

Swaping to lower size motor on Hitachi SJ300 VFD

(OP)
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    

RE: Swaping to lower size motor on Hitachi SJ300 VFD

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.

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