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Thread: New VFD announced by Powtran
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6th September 2019, 04:24 PM #61GOLD MEMBER
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VFD's are all 3 phase out in my experience.
CHRIS
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6th September 2019 04:24 PM # ADSGoogle Adsense Advertisement
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6th September 2019, 05:54 PM #62.
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6th September 2019, 08:21 PM #63GOLD MEMBER
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Last edited by poundy; 6th September 2019 at 08:22 PM. Reason: more replies on last page
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7th September 2019, 02:41 AM #64Senior Member
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Thanks guys.
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15th June 2020, 02:56 PM #65
Does anyone have a clear understanding of what the key differences between the PI150 and PI500A are with respects to providing variable speed to a lathe? I've poured over the manuals but can't for the life find any differences that matter.
The best I can tell, they both offer vector drive and the ability to add a braking resistor.
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15th June 2020, 03:30 PM #66
The A series is a slightly reduced instruction set. More to do with comms and specific instruction sets (like for a pressure pump) I think. The A series is cheaper and fine for a lathe.
Also the A series doesn't offer closed loop vector control. I presume it lacks the feedback card.Those were the droids I was looking for.
https://autoblastgates.com.au
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15th June 2020, 03:51 PM #67.
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From what I can tell, in terms of basic operating parameters for a small lathe, there's no significant difference.
The other differences are
- greater range of higher power models in the 500 range, 240V goes to 5.5kw for the 500, only 2.2kW for the 150. Even more in the 3P rNGE.
- VFD case fully enclose mains electrical terminals on the 500, mains electrical are partially exposed on the 150 (technically then requiring an enclosure0
- the 500 has the speed control and programming knob - sounds dumb but is a worthwhile feature.
- the 500 has a greater range of parameters but the extras aren't essential for lathe operation.
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15th June 2020, 04:44 PM #68
So much for vector control being vector control. This did send me off on another bit of research though, and now understand(ish) the difference between open and closed vector control, based on this source which I thought explained it rather well for my level of knowledge.
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