View Single Post
Old 09-16-2015, 12:25 PM   #2018 (permalink)
Permanent Apprentice
Join Date: Jul 2010
Location: norcal oosae
Posts: 523
Thanks: 351
Thanked 314 Times in 215 Posts
I'd second that, for my sample of 1 project. LOL!

It's a Sumitomo VFD, (I'm very impressed w/ it and Sumitomo's support - I think I'll get a couple more for my Lathe & Mill ) Anyway, the drive is 7.5kW, the switching frequency defaults at 5kHz, and allows up to 15kHz. At 5 kHz the noise is very noticable & annoying. At 15 kHz it's mostly noticable only at startup. There are two small fans for the control, and the heatsink/fans are a little under 1/2 of what's in the VFD box.

- E*clipse
  Reply With Quote
The Following User Says Thank You to e*clipse For This Useful Post:
thingstodo (09-16-2015)