Hey Pat,
yet I am doing nothing with it because the machine is not yet put into service.
And the requirement I have is not to have the exact speed, but to have the best efficiency when the VFD drives the spindle, and basically industrial reliability.
Got it
Thanks Aiph5u
PS: Just to be complete, while I’m at it, a Omron MX2 / Hitachi WJ200 can not only drive the usual spindles (=asynchronous induction motors) but also synchronous motor spindles. If you look at the last three spindles on the bottom, look at the rpm range(!):
As you can see, with that, you can mill steel /very/ slowly, go down to 1000 or even 100 rpm, but also fast, up to 40,000 or 34,000 rpm, with the same spindle. Such motors work with permanent magnets. And within its power and its entire speed range, it is never slowed down, indepentently of load.
Hi David:
I have a VFD HY01D523B just like that one, but unfortunately, a power failure damaged the auxiliary power supply. The integrated circuit inside that power supply exploded, and I don’t have the serial number. Could you help me, if you can, and send me a photo of that integrated circuit, please? It must be a DIP8 with only 7 pins. Thank you very much in advance.
Greetings from Cuba.