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Befor I got the vfd and spindle I used a fixed speed AC router, I switched the router by a 24V auxiliary relay board from Aliexpress as I operate the NVEM at 24Volt...

pm ME

This sound familiar was same here but in an other sequence and other controller NVEM v2 4 axis instead of NVUM.
I had your second problem first after 1 day of playing, I noticed the communication...

Files for NVEM here https://www.nvcnc.net/nvem.html

The link seem not to work https://www.youtube.com/embed/Pm6ZD2vEz1s?wmode=opaqueI
have it working on the NVEM V2 with a Huanyang 2.2Kw VFD 220V with aircooled spindle 3 phase 2,2Kw, ER25, 18000rpm...

I DL the bin file from the Lolette site https://www.nvcnc.net/nvem.html

Maybe this could help https://www.youtube.com/watch?v=Pm6ZD2vEz1s&feature=share&fbclid=IwAR1OpAnXxq1fsfowPdDCC3qi-c4Ew07vj4b-4m6N9w778kh4XJXhOIhIDvY

I recently became the owner of my second Novosun NVEM V2, the first lost Ethernet communication, received one new in warranty.
What a nightmare to find out the ports. I like to share my findings.
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