The Yaskawa stuff looks very similar to Panasonic. Look at the front panel, very similar if not the same layout. Wouldnt be surprised if there is some commonality here.

For what its worth, my Father In Law used to be in charge of one of the largest ports in the world, running all their electrical systems. Think of moving millions of tons of goods per month. They used Yaskawa variable speed drives extensively, a serious outfit.