Re: Spindle Fluctuating Speeds
Hi, I am using UC300ETH-UB1 (UCCNC) with a HY02D223B.
No pot on the BOB.
Using shielded 16/4 from the UB1 to VFD.
Wiring:
UB1 - VFD
AH1 - 10v - Verified at 9.98v
AO1 - VI - return voltage at 12,000rpm is 5.82v
AL1 - ACM
Everything I have read tells me its the VFD itself, and one has confirmed the same results.
I've heard of adding a small microfarad cap on the control line, but some had no real results.
So at this point, I can run it with manual speed control without issues (its how the old machine ran)
- Manually, the speed is rock solid
- But I would like to get the speed control working. I'd rather not use the RS485 cable as I have no more USB ports avail.
What are some reputable VFD's for a 2.2kw spindle with reliable speed control?
- I'm willing to get a new VFD as this one can be used for another machine.
Thanks.
My Build: http://www.cnczone.com/forums/diy-cnc_router_table_machines/113711-my_build_-_many_thanks.html