Warco WM250

[John RuddParticipant @johnrudd16576]

Dusty,

You will need to check the programming parameters……

If you look at page 15 of the manual, press and hold the top,centre button for two seconds, then press the up arrow key until you read P12. What does it say? It needs to be set to 0 for now…..then check P15, that should be 0 too…

[DustyParticipant @dusty]

John, I have checked and p12 shows 0 but I do not have p15 I stop at 14. My error code I have discovered is quite normal when you turn the thing off. Found p15 and that shows 0. Good job I did not open my bottle of good red wine yesterday. This is becoming very frustrating.

Edited By Dusty on 13/03/2017 10:57:44

[John RuddParticipant @johnrudd16576]

Dusty,

My fault, you need to set P14 to 101 to access anything beyond P14.

The error is appropriate, it signifies the falling dc bus as the power is removed.

So, go back to P14, then press the NAV key again, then enter 101 by using the UP key, then press the NAV key again to store….then go to P15 and see what that says….

The instructions are on page 16…. to help

[DustyParticipant @dusty]

Yes John, I did manage to find it and checked and it does read 0. I am struggling a bit at the moment with eye problems. I have an appointment at Moorefields Eye Hospital this afternoon, so if I do not reply to you that is why.

[John RuddParticipant @johnrudd16576]

Dusty,

We will continue after your eye problems get better….good luck at hospital

[DustyParticipant @dusty]

Thanks John, I am afraid it is an ongoing problem that has be exacerbated by cataracts. Today is a check up, which by the time I get there and have my examination I loose about 5hrs. Not much fun this getting old lark, but must not complain, the wooden overcoat is not an option I want just yet.

[DustyParticipant @dusty]

Talk about making you look a liar. Back home, I have never been so quick at Moorefields normally 2hrs today out inside 30mins. John is there anything I can be looking at that might help?

[NJHParticipant @njh]

Dusty

"….Not much fun this getting old lark "

Quite so …but just remember the alternative is dying young!

Norman

[DustyParticipant @dusty]

John

With your greater wisdom, would a factory reset help. My thinking is that if I perform that, we would, or should know that the VFD is set to factory default or is that too simple?

[John RuddParticipant @johnrudd16576]

Dusty,

That was going to be my next suggestion…..

After that, check you have the link in terminals 1&2……it doesnt matter about the pot at the moment….( see page 22….at the bottom where P12 and P15 =0 )

[DustyParticipant @dusty]

John,

Reset, checked the link and all O.K. p12 and p15 both show 0. Could it be that I have a defective drive?

[DustyParticipant @dusty]

Been thinking, I know that can be dangerous, but could having the link between 1 and 2 rather than a switch be causing a safety feature to cut in and prevent the drive starting?

[John RuddParticipant @johnrudd16576]

Its a pain having to keep logging in to post……!

Ok,trying something different.

Set P12 to 1, not zero.

With the link in place at terminals 1&2, now, does the drive show STOP?

If it does, then press the START key, the display should say H 0.0 if it does, press the UP key and the motor should speed up, conversely pressing the DOWN key, the motor should slow…..

You did wire the motor to DELTA didnt you ?

[DustyParticipant @dusty]

Hallelujah, hallelujah, I am this evening meeting some former companions of my toil (workmates) usually it is a couple of pints put the world to rights and go home, tonight I will have something to celebrate.

It worked just as you said John. Brilliant Oh and yes it is connected delta.

[John RuddParticipant @johnrudd16576]

Ok,

So we have lift off?

Once you have decided where the inverter is going to be finally positioned and have decided what controls you want,

We can continue to configure the other parameters….

Are you having the speed pot remain where it is ? What about forward and rev ? Are you going to use the existing switch? ( that will take a bit of figuring out, I may have the notes I made from mine somewhere…)

[MeunierParticipant @meunier]

John, re having to keep logging-in, I'm an ex-lurker and only a newbie to posting and always having to log-in was a pain. Found that when I click 'log-in' I am only offered e-mail and password options. If I ignore that and click log-in a second time I get those two options again but also a small 'remember me' box which when ticked allows me to re-connect as 'already logged-in'. When logged-in the original log-in page shows again, ignore that and click 'more latest posts'. Hope I understood the problem correctly and HTH.

DaveD

Edited By Meunier on 14/03/2017 20:24:44

[DustyParticipant @dusty]

Having given this some thought today I have decided; The inverter will be fixed to the wall slightly to the left of the headstock, out of the way of swarf and cutting fluids, I am able to reach it without any problem.

I am quite relaxed about not reversing, I cannot remember the last time I needed to.

Now for the interesting bit; I would like to use the original 'filter' to power the digital speed readout and reader. This has the sockets to plug both sets of connections in place on the PCB. I would like to utilise the NVR switch (shown on P3 of this post) This would give me emergency stop should it ever be required. My thoughts are to bring the mains cable in through the back of the control box to the switch, and then back out to the VFD. I would then take a connection from the switch side to the 'filter' to power that. This would then give the power to the speed display.

The speed pot I wish to leave on the front of the lathe as being the most convenient place. Have I taken a wrong turning somewhere?

[DustyParticipant @dusty]

I have looked at the instruction manual for the VFD and if I am right by setting P12 to 2 I should be able to reverse from the keypad, if I ever needed to and I think remote (pot) should still work, I hope.

[John RuddParticipant @johnrudd16576]

Dusty,

If you take the power leads that were originally attached to the L connections on the old speed controller, follow them to their source. Having found where they are connected, replace them with a length of 3 core mains cable and connect the free end to the inverter as I suggested further back in the thread. This then should supply the inverter by the original route via the nvr switch/interlocks etc. You shouldnt need to touch the wiring for the tacho side of things, the speed pot wiring will need to be taken from the pot to the inverter too….

[DustyParticipant @dusty]

Having been fiddling about on other things that the boss said I needed to do I have just got back into the workshop to hopefully finish this installation. Lo and behold the motor is running the wrong way. I have to admit that I had not noticed this before, so I thought I know how to fix this just reverse two of the wires connecting VFD to motor, wrong it still runs the wrong way. What is the next step?.

[John RuddParticipant @johnrudd16576]

Dusty,

This defies all logic…..??

Did you swap the wires at the motor and the inverter or just at the inverter end ( or the motor end) ?

If the motor is connected as I suggested earlier, U,V,W to U,V,W at the motor, it will run in a direction. if this wrong then swap U and V wires at one end only……not both….I hope this doesnt come across as patronising…..

But its the only thing I can think of ……..

[DustyParticipant @dusty]

No John I only swapped at one end and it was W and V would that make any difference?

[John RuddParticipant @johnrudd16576]

Nope, it wont matter which two phases are swapped….

If it were me, I'd put the wiring back as was, check rotation, then swap U and V. If that didnt do it, then U and W….( Y ou already tried W and V)…..then I'd cry if it wasnt sorted!!

[DustyParticipant @dusty]

I feel a very large whisky coming on. I will try as you suggest You may hear the screams from where you are if it will not work.

[DustyParticipant @dusty]

I don't believe it, restored the connections and the bloody thing runs the right way, why? it does not make sense, I am convinced that when I first got it to run it was running in the right direction. I think I might still have that large one.

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