Huanyang VFD

Bernard,

If you intend to play with the settings, make a note of what you change before you do it......

Apologies for granny sucking eggs etc....

Hi John,

Will do, learnt the hard way, printed out the pdf of the manual, so as to make note of settings next to factory ones.

No apologies necessary, are you the John Rudd from just across the Humber from me.

Bernard. (known also as Chris)

So it looks as though I was wrong in assuming that the motor is ok - although I suppose it might be ok if running on a normal 3 phase supply rather than a vfd.

There is some interesting background stuff on carrier frequency here **LINK** which explains a lot about noise, vibration and bearing damage. It might be that your motor has been damaged in a previous life by running on a poorly set up vfd (my electrician neighbour tells me that many industrial fan motors are run on vfd's these days, mainly for speed control).

Bernard,

I do live across the Humber, north bank, just outside of Hedon.

Not sure how we are aquainted...maybe another John you know?

I am not alone..

Bernard,

When you said that it vibrates at different settings does that relate to rpm because if the bearing(s) have marks on the tracks that the balls click over when rotating this could be felt at related multiple, harmonics, rpm i.e. 2000, 4000, 8000 etc.

It might be worth changing the bearings to see if this helps.

Martin P

John,

I assumed you are the same John Rudd on MM, the gent with the airplane avatar, 'eccentric millionaire financed by r indoors', on MM I'm 'rotorhead' (Chris from Ulceby, N. Lincs), but only view that site occasionally now.

If not I apologise John.

Martin, the actual speed at which it vibrates doesn't really coincide with any particular frequency, however whilst running these tests on the bench which wasn't for a long time, I noticed the shaft that the pulley fits on was getting warmer than I would have expected, bearings may be another way to go or another motor.

However, tomorrow I hope to get the pulley replaced, or may have to buy another one.

Then I shall do a factory reset, PD013 to 08, then input all the correct settings for the motors I have, and see what happens.

I'll post on my progress, incase it may help someone else...

Bernard.

Bernard/Chris,

You are corect, it is me, your alias didnt register until you mentioned Ulceby......

Good luck with sorting your inverter.

Hi Folks,

Done a bit more playing, took Martin's advice and changed the bearings, once removed they did have a slight rock in them (movement).

Then changed the pulley with the supplier, same out of alignment with a new pulley assembly(TaperLok), ditched that after numerous failed attempts to align with the locking grubscrews.

Rebushed an old pulley to be a pull on fit using the M8 threads in the end of the motor shaft, but there was no keyway in the pulley, so used doubled up dogpoint grubscrews through the sheaves into the shaft keyway, ran the motor on the bench, but still a lot of vibration at full revs even though the pulley ran true.

Scratched my head several times over this issue, but worked out that replacing the key with grubscrews might have upset balance, so drilled the pulley outer face opposite the keyway several times during a trial and error exercise.

Managed to get it running very smooth at full speed(60Hz), but there still seemed to be frequency issues at differing speed ranges, so back to trying the VFD carrier frequency (PD041), I'd left it at a new setting of 3 out of a range of (1-15), I tried working backwards towards 1 as going higher just moved the vibration range higher, I ended up using a setting of 1 with quite good even running throughout the speed range, but now I have a slight whining, which I can live with.

When I fitted the motor back on the lathe, I then had issues with the very long run belts, giving a vibration of their own, so it looks as though my thoughts of earlier fitting the motor onto the rear of the bed, below the headstock, are going to become a reality.

Also amongst this saga was the belief my headstock bearings might need adjusting, I posted that I'd used a test bar to line the headstock up, but hadn't really tried any serious unsupported turning, well whilst faffing with these latest problems, the turning an unwanted taper issue reared its ugly head, so set about adjusting the headstock to turn parallel, this took several trials, removing change wheel quadrant etc, slackening the 4 capheads (the front one is really awkward with the gap piece in place), but after 3 attempts got it to turn a 2" dia piece of En19T nice and parallel, with either a 0.002" or 0.025" cut applied using a DCMT 11T302 tip, the finish was mirror like.

So now a happy bunny on the turning bit, still have to move the motor though...

Bernard.

Edited By Bernard Wright on 10/06/2016 01:29:04

Should anyone require a manual for Huanyang VFDs, here is a link to their download site...http://www.hy-electrical.com/download3.htm

Bernard.

There is a short very informative video on youtbe on setting up Huanyang VFD. My friend bought one on ebay £90.40 and it's very good, easy to set up and the deliver was so quick. How do they do it ?. I have an elderly Yaskawa VS mini series VFD and would like advice on altering the settings, it is running at the moment. I have what I think is the important part of the manual, but some of the settings don't register with me.John

John - yours is presumably this one? I don't have one of these myself but doubtless we can figure it out collectively. What's the issue?

Murray

Just a note on setting the number of poles. All this changes is how the inverter works out RPM for a given frequency or vice-versa, twice as many poles, half the speed.

Neil

Neil,

Is there a way of getting the VFD to display RPM instead of Frequency, I've been through the manual several times over the last few days and hadn't seen anything relating to speed display.

Bernard.

Table entry at top of page 17 in the manual supposedly covers putting display into RPM monitoring - though the button presses aren't obvious to me from the left hand column...

David,

Hadn't noticed that, will go and try, and report back...

Bernard.

Just been, done that, it works, I pressed the double arrows (bottom left on my display pad), and the display changed from frequency (F00.00) to the RPM (no prefix).

Many thanks for that David, it's a continuous learning curve for me with this VFD, I'll probably get familiar with everything then bloody croak...

Bernard..