slow-poke
Ultra Member
I used steppers for my first mill and for the ELS on my lathe. However after using ac servos on the mill, I decided to go 100% servo.
Big thanks to Combustable Herbage I'm a little closer to that goal. Apparently the donated to the cause servos ran 24/7 for 10 years and appear from initial testing to be working just fine. I do have to say the Yaskawa documentation is really great and that's a nice change from the "other" servos I have used in the past.
I needed a tall and deep but narrow enclosure for the drives, could not find anything suitable so off to the scrap heap and settled on a large heatsink about 20" square for the base plate, cut the top and bottom off and the remainder makes a great base to pull heat away from the drives. Made a quick and dirty enclosure and mounted the drives to the base plate. Made a plexiglass cover so I can see the drives. I wanted to see how warm the box becomes without a ventilation fan with everything closed up. Needed something to generate the step pulses at a few kHz, so I finally found a use for one of those $50 toy oscilloscopes with built in signal generator. The only problem is the signal out waveform is only 2V-p-p, nothing a 10c, 2N3904 transistor won't cure. So it's been running for a few hours now and the internal temperature is up to about 31C. Both drives are powered, but only one is actually making a servo turn at a good clip. Motor is cool (no load). So I don't think I will need an enclosure fan.
Big thanks to Combustable Herbage I'm a little closer to that goal. Apparently the donated to the cause servos ran 24/7 for 10 years and appear from initial testing to be working just fine. I do have to say the Yaskawa documentation is really great and that's a nice change from the "other" servos I have used in the past.
I needed a tall and deep but narrow enclosure for the drives, could not find anything suitable so off to the scrap heap and settled on a large heatsink about 20" square for the base plate, cut the top and bottom off and the remainder makes a great base to pull heat away from the drives. Made a quick and dirty enclosure and mounted the drives to the base plate. Made a plexiglass cover so I can see the drives. I wanted to see how warm the box becomes without a ventilation fan with everything closed up. Needed something to generate the step pulses at a few kHz, so I finally found a use for one of those $50 toy oscilloscopes with built in signal generator. The only problem is the signal out waveform is only 2V-p-p, nothing a 10c, 2N3904 transistor won't cure. So it's been running for a few hours now and the internal temperature is up to about 31C. Both drives are powered, but only one is actually making a servo turn at a good clip. Motor is cool (no load). So I don't think I will need an enclosure fan.