I also have adjusted my vfd's carrier freq. By raising the freq, it can cause some overheating. For short run time motors like on a lathe it should not be a problem but if something runs more continuously you have to keep an eye on it. Thanks for sharing, Randy
@ReignOterror9 жыл бұрын
Emma, you have to be very careful about jacking up the carrier frequency. As you increase it, you put more stress on the motor windings. It has to do with leakage inductance. This is why they have inverter rated motors. If you don't have a rated motor, you may be able to getaway with it but you will get more heating in the motor.
@Zorgoban9 жыл бұрын
Yep, the setting 12 was quiet for my ears. 10 is very high but I'm still able to hear it.
@tyhuffman54476 жыл бұрын
Your shifting the frequency of the drive firing to higher in the hearing range. Drives usually fire at 4kHz your adjusting it up.
@tobyw95737 жыл бұрын
Raising the carrier frequency is said to increase power consumption, but how much can that cost a hobbyist? And are there any other effects?
@RyanWeishalla9 жыл бұрын
On the KZbin audio at least, 10 was worse than 8 for me (at least more noticeable at 10 than 8), but 12 was ok.
@jakewynn3 жыл бұрын
It was probably in her ultrasound! KZbin compression probably meant it was more audible.
@stephenreeves90259 жыл бұрын
just found your channel from a comment on one of Donald Cossitt's videos I have subscribed
@EmmaRitson9 жыл бұрын
Stephen Reeves thanks for checking in! hope I upload something to hold your interest!
@stu0things0and0stuff9 жыл бұрын
Interesting , I found the lower frequencies much better for me, the lowest setting on my HY invertor to make it sound like the IMO drives, my ears are hurting from the higher setting you had it on :) don't worry my brothers a bit deef too so he can't hear it either.
@MichaelEdwards29 жыл бұрын
Emma, 12 was totally silent on camera. But any ideas what the trade off is on the motor.
@AmateurRedneckWorkshop9 жыл бұрын
That is outside my experience. I have seen several people with them including mrpete222. Good to see it is quieted down. My ears ring most of the time so I certainly never heard it doing anything. =(;-) If I did I would have thought it was me. thanks for the video.
@MarkThomas1237 жыл бұрын
Strange.. 12 cleared it up and I could not even hear it.. Came back at 10, but, was not irritating.. I'm sure you are glad it's fixed..Ha..
@marceltimmers12909 жыл бұрын
Hi mate. If you go to Shadon HKW on You tube, you will get a whole bunch of info on VFDs. You might have to hunt them out a little, but they are good. He is also happy to help if you ask. Don't let them tell you that all Chinese VFDs are bad, they are not. It's just the books that come with them that are bad, and first need to be translated by some people of the former Bletchley park. Shhhhh. Marcel.
@EmmaRitson9 жыл бұрын
Marcel Timmers thanks for that! ill take a look for sure!
@marceltimmers12909 жыл бұрын
Emma Ritson It might also be under Bar Z He is a gruff sort of bloke, but very friendly.