I have added a VFD to my Chinese 14x40 lathe, but ran into a problem with the DRO. When starting the lathe, the numbers on the DRO also start to run. From what I can see, there doesn't seem to be any electrical connections from the DRO to the lathes electrical box, only cables coming to it are the X- and Y-axis data cables and the 230V power cable that is connected to the wall. The DRO numbers stay put when the spindle is not moving but as soon as I start the motor the numbers begin to run.
The electrician that has been giving me some pointers for the installation thought that the VFD may be interferring with the data cables, but at least according to the Aliexpress brochure the VFD should have a built-in EMC-filter. Any ideas what could be the issue and how to fix it?
The electrician that has been giving me some pointers for the installation thought that the VFD may be interferring with the data cables, but at least according to the Aliexpress brochure the VFD should have a built-in EMC-filter. Any ideas what could be the issue and how to fix it?