[m_thread]

Hi

I bought a CNC 6040 a couple of weeks ago and i have some serious problems.

The machine and the controller for the stepper motors works ok. I have tried it out with Mach3 and it seems to function correctly. The build quality of the 'thing' is ok, not great, but its a robust piece of equipment.

My problem is that I cant get the spindle motor to function. I have programmed the VFD that came with the 0.8 kW water cooled spindle according to the instructions from the seller:

PD013 = 8 (factory reset)
PD005 = 400 Hz
PD004 = 400 Hz
PD003 = 400 Hz

The first time i started the motor ran for about 2 mins, with the water cooling running, then i stopped it as it seemed to be working.

Now when i press start on the VFDs control panel the motor jerks, runs maybe a turn or two and then the VFD trips with E.O.C.A (over-current).

I have checked and measured the cables for shortcuts and bad connections but they are ok.
I have tried to measure the resistance of the windings in the motor but i dont know what values are ok. If I measure between any two of the three windings i get next to 0 ohms ( maybe 3-5 ). Is this ok, or is it a sign that the motor is broken?

I have an ongoing discussion with the seller about the spindle problem ( and some other issues with missing cables and wrong sized collets ), but the seller acts a bit evasive and asks me to produce some sort of evidence of what is wrong. The seller told me to bring the VFD to someone who could check if it is broken. But i dont know of anyone who could do that.

I have even made a short movie clip and sent that to the seller since he says that all text is machine translated to chinese and that they have to see movies or pictures describing what the problem is.

Does anyone here have any advise on how to find out what the root cause of the problem is?

Edit: Personally I think the motor is broken. But how would I prove that it is the motor and not the VFD?

Many thanks
/Fredrik

[Al_The_Man]

A low reading of a few ohms is normal for a AC induction motor, have you tried a start command with the motor disconnected?
If it goes into O.C. in this mode it usually indicates a shorted solid state power device.
Al.

[m_thread]

Thanks Al.
I feel a bit stupid not having thought about that obvious test myself

/F

[m_thread]

Ok, I just tested the VFD with the spidle motor disconnected at the motor end of the cable.
When pressing start the VFD display starts to show acceleration ( increasing revolution ) and continues to increase the speed until it reaches 400. Pressing stop gently decreases speed until it reaches 0.

Is this the proof i need to convince the seller that it is the motor that i broken?

/F

[aarggh]

Have you tried disconnecting the control lines from the spindle to the controller, and just powering and controlling up the spindle directly from the vfd since? Effectivley bypassing any relays, etc.

Also, my unit had a similar problem, it turned out to be some swarf from the mounting holes in the controller case shorting some pins!

The spindle should happily run for hours when testing it without any coolant when not under any load.

Another problem my one had was that the parallel cable that came with it, was shielded at both ends, and noise was feeding back into the control circuitry making it go haywire. Changing the cable also helped as the unit had numerous earthing problems, and the multiple earths was not helping at all in the end.

cheers,
Ian

[m_thread]

Hi Ian

Thanks for your advise but I am running my spindle without any connection to the controller. Just the vfd connected to the spindle.

I am currently uploading some more video proof to photobucket. I will update this post when it is done.

/F

[edgas10]

i i have the same problem but my inverter was running ok and today something poped (explode) inside it.
i´ve been running this inverter for almost a year with no problem.
now when i press star it displayis the error code E.OC.A
does somebody know how can i resolve this?
i need to test for shortcuts but dont know how..
thanks

[fatfooey]

Hello all,
Im having a similar problem my motor will run all day on 400 hz but when I try to change frequency it will run for about 4-5 mins then shows error code and slows to stop.
Tried different things but to no joy .
Can any one help.
Thanks
Mike

[simonch]

Hello Together

Actually i have 3 CNC Machines to Set-up. The CNC 3020 worked real well! the Spindle i s a little bit crappy (Bearings) and also the rest is not a Swiss Standard. But hey, for the money its ok, and it works. i even modified it, so i can right now Turn on and off the Spindle and also set the speed with linux CNC. Modification was very easy.

The Second:
A CNC 6040, just as this one:
Ball screw CNC 6040 (800w spindle 1.5kw VFD) + 4 axis + tailstock, (four axis, rotation axis) cnc engraving machine CNC Router-in Wood Router from Industry & Business on Aliexpress.com

Here is the Controller of it.
Attachment 217396

After a few hours mechanical reparations, and conector, etc repairs, the machine worked... wuu haaa!

But i had the problem that the spindle was speeding up way too slow...
It was running fine, exept it had about 10 secs to reach the full speed.
Therefore i searched for the manual but found no manual for this CNC Spindle Driver / VFD...

so i took another one, which looked similar to my menu.
Now i changed the delays, and now the machine isnt working.... I think i changed something wrong, because the manual and the machine i have, probably have a different menu....

P013 is definitifely the Reset Menu, so i done a reset. now the spindle runs very slowly. i f i turn up the speed a little bit it gives me a overcurrent error.

The VFD is a 1.5kW and the motor has about 0.8Kw.

now my questions: Does anyone have a manual to the VFD on the Picture?
Does anyone have the Standart settings of this machine? (And the Motor Datas?)

Thanks a lot in advance

Greetings

Simon

[coldte]

Hi,It just so happens that I think that I can help you with a VFD manual for a PRT-E1500w .I do not know how to download it (new here) so can Email if required regards coldte

[JLB1]

i WOULD VERY MUCH APPRECIATE THE VFD INFORMATION MANUAL FOR THE PRT-E1500W. i HOPE IT IS THE USB AND NOT THE PARALLEL PORT TYPE. IF SO MY E-MAIL ADDRESS IS [email protected]. if this helps you will be my HERO. THANK YOU SOOOOOOO MUCH. JLB1

[simonch]

Hello Togheter

No one has a Manual for this VFD?

It is a RLPM2-1R5G-S2-2-485 ...

Now i found some Settings which worked for me.....



I have now to fine tune it, because there are some things still wrong, for example the RPM Value, is about 4x bigger as it is showed on the panel...

I found the Manual for the HY07D543B , and this seems to be come to the closest of this VFD.

The Settings i made, actually are the following:

First, to set back all other settings / and the Wrong ones (Perhaps you should thry it without PD013 First, if its not working then go throug all again with PD013 first, to reset all settings. With a reset, all other parameters are set back, also perhaps still good parameters...)

PD013: 8 (Factory Reset: Factory)


then


PD000: 0 (Parameter lock: OFF)

PD001: 0 (Source of Commands: Operator) [I think Operator means the Controll panel of the VFD, can chanched to a External input]

PD002: 3 (Source of Operating Frequency: Operator) [I think Operator means the Controll panel of the VFD]

PD003: 400 (Main Frequency)

PD004: 400 (Base Frequency)

PD005: 400 (Max Frequency)

PD006: 2.5 ( Intermediate Frequency)

PD007 0.50 (Min Frequency)

PD008: 220v (Max Voltage)

PD046: 13 (Stops the Machine when a Stop switch is connected between GND and RST)

PD070: 1 (Analog input : 0-5Volt) [I think this value is just neded if Set in PD001 something else then 0, not sure]

PD072: 400 (Higher Analog Frequency) [I think this value is just neded if Set in PD001 something else then 0, not sure]

PD073:0 (Lower Analog Frequency) [I think this value is just neded if Set in PD001 something else then 0, not sure]

PD141: 220v (Rated Motor Voltage)

PD142: 5 (Rated Current Motor) [This one is the one of the most important, Less, means less force, More means more heat you can

PD143: 4 (Motor Pole Number) start with 1 Ampere to test...]

PD144:3000 (Rated Motor Revolution)

Also you should Pay attention to your Maximum Revolutions per minute, given by the Motor type (and the bearings of the Motor).
If you go over the specifications, you will Destroy the Motor.

Anyway, if someone has a original Manual i would be happy to take a look at the PD Parameters.

Many thanks in advance

Greetings Simon

[xpensivetraffic]

Here is. Inverter which you have is the same, but another name.

[coldte]

Hi, The vfd you downloaded is not the one that I have,this one is specifically for the prt-E1500w water cooled router and front of console is a different layout.Would upload but not sure how,will e-mail if required. regards coldte

[JLB1]

If you could e-mail me the information you have on the PRT-E1500 water cooled router, you would be my hero. Do you have a usb or a parallel port type? mine is usb. If that is what you have then my e-mail address is [email protected]. I have been working on this for 2 years. To start finding and getting an old XP (with no support at Microsoft) up and running correctly was some what of a challenge. Now with so many different ways I have found to set up the VFD. I seemed to have taken one step forward and three steps back. I had the motor running in manual but thought that maybe I had found the wrong VFD information, so I tried another persons recommendations and now I am stuck on 50HZ and IT will not let me change it to 400Hz This is maddening. THANK-YOU

[JIMILEE]

when making changes on your VFD you have to set d001 t0 1 in order to make any changes on your VFD. hope this helps

[coldte]

Hi, I have a similar machine ,A PRT_E1500w USB Router itself new. From what you have sent in post and what I have read (and Tried ) in other post about resetting vfd I reset with D0176. so perhaps we should both check! Personally I would switch to manual,configure D0001,D0032 and connect motor and run from console ,this will tell you for certain whether it is ok or not .Mine runs well and is fully adjustable.Please note you will not run without Resetting fault code(Been There) Hope this helps a bit

[mactec54]

This is a very old thread you should start a new one