Magnetek brand-labeled Yaskawa drives up until 2001. The Magnetek version of the manual was actually the BEST one of the many companies that brand-labeled Yaskawa at the time, so finding the original manual from Yaskawa may be even WORSE for you. The drive is (was) nothing special, other than it had a special chipset on it that allowed it to handle some special functions that are necessary when using VFDs on hoists so that the drive can avoid dropping the load. You don't need any of that, basically all you need to do is to first find the parameter that resets EVERYTHING back to the factory defaults. ALWAYS start there with used drives. Next, set it up for basic Sensorless Vector Control, and program the drive to your motor nameplate data, then find the wiring diagrams and make sure the drive is set up for how you want to control it. But...
That drive is at least 17 years old. If it was sitting on the shelf too long without power on it, the caps may be bad now and by just energizing it, you may have permanently damaged it. Sorry to be the bearer of potentially bad news... If however it was still in service within the last year, maybe two, you might be OK.