[rkaasa]

Hi

Over the last few weeks my homemade CNC router have been taking shape and last week I was able to do the first test runs. So far I am very happy with the results, but I do have a problem with my eBay HY02D223B inverter.


When I try to start the spindle with a high RPM setting (close to max 19000-24000) I get the E.OC.n error. My spindle is 6000-24000RPM 2.2kw. It is most likely caused by the high inrush current at startup. I have therefore tried to slow down the acceleration (PD014 Accel. Time 1) Manual says 0.1-6500 seconds. I have tried many settings ranging from 1 to 6500 but there is no change in spindle acceleration on startup. It seems like the acceleration is independent of PD014 setting. (PD015 Decel. Time is affecting the deceleration time as expected).

I am able to run the spindle at max RPM if starting it at a lower frequency and increase the frequency while spindle is turning. I assume the spindle operation is normal in every way except startup at high RPM. I have tested it milling aluminum with a 10mm end mill slotting 2mm deep with no problems Have anyone else had problems setting acceleration time on these VFDs?

Display tells me ASR 1.0 and UR 1.00 when powered is connected.

Any help would be appreciated!

Reidar Kaasa