Part 1 of the EMCO PC Turn 50 CNC lathe retrofit series: SZGH CNC990TDb CNC Controller introduction, Closed loop stepper motors, SAKO SKI780-0D75G-1 VFD and motor wiring.
See the link below for the written summary on my website, including a PDF with the Wiring Diagram, Bill of Materials and software parameters. (Free download)
00:00 Intro
02:20 SZGH CNC990TDb CNC controller overview
04:35 Connecting the new closed loop stepper motors
09:10 VFD and spindle motor wiring
VFD settings and programming:
Video by James from Clough42 for more detailed information on VFD programming:
Article on the most useful VFD settings including background information:
Information on Sensorless Vector Control:
https://resources.system-analysis.cadence.com/blog/msa2021-sensorless-vector-control-of-ac-drives
Cheers,
Robin
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