Several months back I bought a 1967 Northfield 12" jointer and received lots of good advice from people on this forum. I am just now getting around to trying to power it up. I need to order a VFD to run the machine. It is a three phase 3 HP motor and I have single phase power. I have been looking at the Hitachi WJ200-022SF VFD as a possible drive. It seems to fit the motor parameters well. The nameplate shows 10.4 amps at 220 volt three phase. I wanted to make sure I get everything I will need without having to make a separate order, so i have a question or two.
First question is about a braking resistor. The Hitachi comes with ability to attach a braking resistor. Are they worth adding and how do you size them. The Hitachi accepts a few different OHM and Watt configurations. Some say 150% required torque for brake and some say 100%.
Second question is how do most people wire the VFD to your power source. Do/can you create a plug that plugs into the 220 volt outlet or do most people remove the outlet and hard wire it to the VFD?
Third question is about enclosures. The Hitachi recommends an enclosure to keep debris out. So do you generally mount these on the wall behind the jointer in a box with the power source wiring coming in the back?
Finally, the jointer currently has an on/off switch on the front. Can I still use a switch with a VFD or do you turn the jointer on and off using the front panel of the VFD? If you can use a switch, should I reuse the one on the jointer or buy a new one?
I don't even want to discuss wiring details at the moment. I'm just trying to figure out what to order so I have everything I need when the time comes to wire it. I'm sure once I have everything I will probably need to start another discussion about how to specifically wire it. These are some pictures of the motor plate and switch and wiring. image4.jpegimage2.jpegimage1.jpegimage0.jpeg
As always, you all have been very helpful with past questions and I appreciate any help you can give me.