Clive603
Titanium
- Joined
- Aug 2, 2008
- Location
- Sussex, England
Friend Mike-the-Pilot has issues with a Hydrovane 502 compressor on start up. Three phase 2.2 KW, 3 HP, 2,800 rpm motor configureable in both wye and delta.
His main shop three phase is via a Transwave 5 HP rated rotary converter giving 440 V three phase. On the Transwave the Hydrovane start up is iffy, with a tendency to settle at half speed rather than run up to full speed. Most problematical in cold weather. I suspect the Transwave is running out of amps on the wild leg before the motor has run up properly. Its certainly slower to run up than mine is which gets proper 440 volts and jumps up to speed almost instantly.
I have a 2.2 KW rated Eaton DE-1 display-less VFD box waiting for its application to be ready. We tried running the Hydrovane off that on its factory default settings with similar results to the Transwave, although it was a bit less willing to settle at half speed. Testing the Eaton VFD on my Hydrovane 502 showed it to run just fine on factory default settings but my shop is a little warmer than his barn.
Factory default setting on the Eaton is 5 seconds ramp up and 3% low speed voltage boost. I'm guessing that shortening the ramp up period and raising the voltage boost will give a better starting kick hopefully pushing it up to speed before whatever causes it to bog down hits. Question is what combination of ramp time and voltage boost will give the best start-up kick. I assume that shorter start up ramp time and higher voltage boost will both drain down the DC supply side faster. Hence setting ramp up to minimum, 0.5 seconds, and voltage boost to maximum, 40%, is likely to be counter productive as it will demand too many amps too fast so the effective power could actually be less.
Tried a combination of 2 seconds ramp up and 10% boost settings on mine. Certainly livelier on start up. Road trip involved so be nice to have a better feel for whats going on.
Thanks.
Clive
His main shop three phase is via a Transwave 5 HP rated rotary converter giving 440 V three phase. On the Transwave the Hydrovane start up is iffy, with a tendency to settle at half speed rather than run up to full speed. Most problematical in cold weather. I suspect the Transwave is running out of amps on the wild leg before the motor has run up properly. Its certainly slower to run up than mine is which gets proper 440 volts and jumps up to speed almost instantly.
I have a 2.2 KW rated Eaton DE-1 display-less VFD box waiting for its application to be ready. We tried running the Hydrovane off that on its factory default settings with similar results to the Transwave, although it was a bit less willing to settle at half speed. Testing the Eaton VFD on my Hydrovane 502 showed it to run just fine on factory default settings but my shop is a little warmer than his barn.
Factory default setting on the Eaton is 5 seconds ramp up and 3% low speed voltage boost. I'm guessing that shortening the ramp up period and raising the voltage boost will give a better starting kick hopefully pushing it up to speed before whatever causes it to bog down hits. Question is what combination of ramp time and voltage boost will give the best start-up kick. I assume that shorter start up ramp time and higher voltage boost will both drain down the DC supply side faster. Hence setting ramp up to minimum, 0.5 seconds, and voltage boost to maximum, 40%, is likely to be counter productive as it will demand too many amps too fast so the effective power could actually be less.
Tried a combination of 2 seconds ramp up and 10% boost settings on mine. Certainly livelier on start up. Road trip involved so be nice to have a better feel for whats going on.
Thanks.
Clive
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