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)
https://uptimefab.com/2022/05/16/mini-cnc-lathe-retrofit-emco-pc-turn-50/
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:
https://www.youtube.com/watch?v=RQKPtf7stiw&list=PLDlWKv7KIIr_Znhfg8obxwcduFee5Ub5z&index=2
Article on the most useful VFD settings including background information:
https://www.controleng.com/articles/top-5-vfd-parameter-changes-explained/
Information on Sensorless Vector Control:
https://resources.system-analysis.cadence.com/blog/msa2021-sensorless-vector-control-of-ac-drives
Cheers,
Robin