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26-11-2019 #21
Not quite sure what CNC has to do with it! At least some of the 240-415 inverters on their eBay site come with remote control pods and external CNC control is effectively only replacing the remote controls in the box. But at £600+ for a 3HP box, it's a bit steep.
Thanks for the offer of letting me look at one of the Ecogoo systems but at 200miles distance in South Devon it's a bit far. Kind offer, though. From your experience it sounds as if one of these would suit me anyway, so I'll see what Father Christmas puts in my stocking. Or at least I'll see what's left in my wallet the other side of Christmas!
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26-11-2019 #22
I think its due to the load being variable and possibly 'choppy' if you think that the drives are doing their own trickery.
No problem, always welcome. We are property hunting and whilst your area is appealing, not sure we will head out that far. One of my team members at work lives in South Moulton.
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26-11-2019 #23
They ought to if they want to have any chance of meeting the relevant regulations! The circuit in question is a thing called a PFC boost converter, these are used on the front end of most high power switch mode power supplies, but are normally wired to generate 350...400V DC output which is then either regulated down to a lower voltage or turned into 3 phase 220V AC. It's not a lot of work to make one that outputs 550...600V or so which you can make 380/415V 3 phase from.
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11-01-2020 #24
Bought the Ecogogo VFD. 5.5kw to run 3.9kw motors.
Patched it into the main switchgear, direct onto the motor selector switch. (It's a combination machine with 3x motors). Wired the motors to permenant Star at the switchgear, so only 3 wires to join.
Only question I had was about earthing the VFD, as there was no dedicated terminal, so earthed the machine and the VFD heatsink to mains earth.
Runs great out of the box and didn't cost too much. £190 all in, for the 380v output version.
Will see how it handles load soon.
Thanks for all the advice.
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11-01-2020 #25
Great, let us know how you get on longer term.
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14-12-2020 #26
A question on these. Ive got 2 of them, both 9100 series. I can see there is a 9000 series with similar specs (220V single phase input, 380V 3 phase output), rated at 7.5KW and somewhat cheaper.
Has anyone used the 9000 series with success?
Thanks
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14-12-2020 #27
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14-12-2020 #28Avoiding the rubbish customer service from AluminiumWarehouse since July '13.
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14-12-2020 #29
Thanks - so the 9000 may suit for 'just generating' 380V - so cheaper than the 9100.
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