VFD Help

[Paul KempParticipant @paulkemp46892]

Gents,

I am sure there will be someone with an answer to my question on here, please?

I have two Huanyang 2.2kw (I think they are from memory) VFD's running my Elliott Omnimill and they so far have done exactly what I want, run the three phase motors from single phase. Up till now I have never bothered with the variable speed function as the machine has a good range of speeds within its own gearing on both spindles. However I have now come across a need to use the VFD to vary the speed. However the units own speed pot only seems to adjust the frequency over about 1/3 of its total travel making it very touchy to get the desired speed. Both units are the same. When I set them up I only adjusted the parameters required to match the motors. I am pretty sure though that I must have a parameter wrong somewhere.

There was a fellow with a similar problem recently but the pot in question was a remote pendant mounted unit. Can anyone please point me in the direction of the parameter(s) that may need adjusting to make the built in pot work over its full range?

Thanks,

Paul.

[Paul KempParticipant @paulkemp46892]

Huanyang HY series speed pot

[John HinkleyParticipant @johnhinkley26699]

I think that fellow was me, hijacking someone else's thread. Have another look at that and I think you'll be sorted. To summarise:

Don't do steps1,3 and 4 as you're using the in-built pot. Follow steps 2,5,6 and 7. Steps 8,11 and 12 to suit your motor. Step 9 and 10 to 10 seconds and parameter Pd072 to 120Hz as suggested by Alan, aka Norfolk Boy. These settings worked for me. Having mucked about with the vfd for a while, I am confident they'll sort you out too.

John

[Paul KempParticipant @paulkemp46892]

John,

Many thanks for that, I knew I had seen it somewhere but couldn't remember exactly where! I have just had a re read and checked against what I wrote in the book when I set them up. If everything is as I recorded it the only differences are pd072 which is set at 50 (as it came) and pd005 also set at 50 (assumed that was correct as 50hz motor). I will have a play Saturday when I am next at the machine and see how I get on! Not being particularly electrically orientated and not being confident of chinglish manuals I was just happy to get the machine going!

Thanks again, will report back.

Paul.

[John HinkleyParticipant @johnhinkley26699]

Paul,

If that's the case, then all you need to do is change Pd072 to 120 and you should be good to go.

John

[Paul KempParticipant @paulkemp46892]

John,

Many thanks for your info / advise. I had a look today and pd072 on both units was set at 400, must have been like that since the factory as I haven't adjusted them. I set them to 120 initially, great improvement but it still seemed the pot only used about 80% of its movement to adjust. So I decided to try 50, now works over full range on both units.

Paul.

[John HinkleyParticipant @johnhinkley26699]

Paul,

Glad you got it sorted OK. Strange that your factory setting for Pd072 and the setting you needed were the opposite of mine! Elastic trickery, eh?

John

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