Myford S7 VFD problem

[Andrew CrowParticipant @andrewcrow91475]

Hi Glyn, I have exactly the same set up as you and I bought VFD 2 years ago. I hadn’t noticed a problem before because I don’t use top speed very often.

I have just checked it after reading this thread and it does exactly the same as yours. It was only a quick test so I will run a few more tests over the next couple of days based on some of the suggestions above and get back to you.

I think a second reported problem to NT may prompt a better response from them.

Andy

[Neil LickfoldParticipant @neillickfold44316]

My setup is a 750 watt 240v 3phase with a VFD , the VFD is from China. I got mine as a working set up from a local supplier. They still sell the motors and inverters, but do not program or set them up for the hobbyist any more. The setup is for the S7 ML7 lathes, and works when in high gear at 100% 50 Hz. Tried it at 60Hz as well, and works just fine with the clutch to start or stop the spindle. Has a 120% / 60 Hz max setting and 10hz is the minimum setting. In high gear it works with the clutch at 10Hz, 50Hz, 60hz.

NT do have a problem with their inverter settings is My take on it.

Neil

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