Help setting up VFD

[firstyear]

Hi Mactec

It looks as if your trick did the.. trick?

I rewired the AV_out G back to the power supply instead of the VFD and I started to get readings!!!
I had a little play with the Spindle SRO slider and the volts changed as they should. Thankyou.

Unfortunatly It didnt move the spindle though...sigh..
Craig at CT checked the VFD parameters/inputs for me and they are ok so thats good too.

So it looks like Im not getting 24v out of the BOB from D_OUT D16 to the VFD B5 Terminal to give it the run command.

Is D16 even +24v out?
Which one is +24V out?
I'm wondering if I should be using CP1 (+v) and CP2 (-v?) instead, as on Hui's spindle wiring diagram on the BOB pdf.

Help

[mactec54]

firstyear

First have you had the VFD & spindle running from the key pad control, you have to do this first

Once you have that part set up, you then change one setting, for Terminal control

You only get 0-10V out of the Bob for the control, this is normal

[firstyear]

Hi Mactec

Yes I've had the spindle running through the pad and all was ok, it's just when I tried to switch it to mach/bob control that I've run into problems..

Golly - Now i'm really confused.. maybe I need to backtrack

As I understand it -which is obviously wrong -

* For spindle Speed control (AV_OUT) I'm using an independent 10v p/s going to the BOB ( G & Vin) then on to the VFD (Vout to VFD T2)... As apparently both the BOB and VFD don't produce 10V out?

* The Run command (spindle on/off) on the VFD B5 Terminal is given by via 24V instruction from D_OUT D16

* The BOB pdf shows 30V out put via D16 and also indicates 24v out of CP1 & CP2 relays - Hui has pictured a VFD with start/stop coming from CP1 & CP2?

I'm now guessing all are wrong and I'm confused as to where to start.

[mactec54]

firstyear

Your drive does have a +10V output that you could of used for the Bob & would of wired
to the Bob the same way as you have with the remote 10V supply Pin 3 10V+ & Pin 1 Common, these would of wired & done the same job as the remote 10V supply

I would contact your supplier about what you have to do with the 24V, what information I have on the drive, I can not see the information that is needed to make the correct conection

The Bob & Mach is working correct by what you said in your post, It may be just a parameter change so you can use the 0-10V to control the drive

0-10V is the norm to control most VFDs so I'm sure there is a way with your drive to do this

Just checked the B5 is a 0 to 24V so you should be ok most likely just some parameter to change

[firstyear]

Thanks Mactec

I'll rewire using the T3 terminal on the vfd like you said - Damn I had a gut feeling that the VFD produced +10V through T3, but I must have misunderstood some earlier instructions..
That's ok.

CT suggested running a contact between B2 and B5 for the run command, but this was in lieu of using D_out D16 from the BOB.
If I do this then I'm guessing that I wont be able to start stop the spindle via the bob/Mach?

[firstyear]

Hi Guys we cracked it!

It was stupidly simple in hindsight and works beautifully.

Thank you Mactec, Hui at DMM and Chris at Control Techniques for all your help.

Hope this helps someone else in the future as DMM & CT is a sweet combo....

[firstyear]

wow 40 posts, 20 emails and 5 emergency calls from Mactec; and I've gone from a newbie to a very proud cnc owner. Sweeeeet!

Now I'm going to build a space shuttle

[mactec54]

firstyear

That's very cool, I'm glad we could help you acheive your dream, to have a machine running & making parts for your projects, Have a great trip to Milan & that your project presentation is successful to