I have a 110V 400Hz 24,000 RPM spindle from Amazon:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Yes, I know that I should expect low power from a 110V system, but I have some questions to maximize torque so I can use this to machine aluminum.
1. I'm only running this at 12,000 RPM or less for machining. Will I get more torque by setting the VFD max output to 200Hz so I'll get the full 110V at the typical speeds that I'm running? Looking at typical frequency/voltage graphs it seems like I'm only getting half voltage sent to the spindle for the (roughly half max) speeds that I'm running with the VFD set to output 400Hz for 24k RPM. I assume more voltage through the spindle will help it to get more current and more torque? I also assume that I'll need to make sure my max current output setting from the VFD is within the limits of the spindle, but as long as the current is limited is it safe to run like this without burning up my spindle motor?
2. I'm wiring 240V to my garage and I plan to use this for my mill in the near future. I know the VFD is made to handle this input, so no worries there. My 110V spindle is the same size and weight as an identical looking spindle sold as part of a 220V set. Some people have said they're actually the same spindle with a different label. What are the chances that I'll burn up my spindle if I set the VFD output to 220V? Normally it's bad to run double voltage through anything, but I don't know if anyone has any actual technical insite to what I've read about them actually being 220V spindles labeled as 110V for average consumers who don't run higher voltage to their shop.
3. Will I get more power/torque from the spindle using 240V input for my VFD even if I limit output to the 110V that's listed on my spindle? I assume a 120V single phase input gets strained when it's converted to 110V 3 phase output, so I'm wondering if this is a good middle step until I either send 220V to my current spindle or just buy a new 220V spindle.
4. I see the typical frequency/voltage charts and the settings for intermediate voltage and frequency. Is it bad for the motor to set a higher voltage at a lower speed? I believe the speed is controlled by the frequency, but would it be bad to set the intermediate voltage high (something in the 50V-100V range)?
It's crazy that they ship these things out with almost no documentation. You'd think there's a solid baseline for any given VFD/Spindle combo that they sell so I'm not sure why it's so poorly documented. I appreciate your expertise and any advice you guys can provide. Thanks!