New Build 1000x600x200mm (newbie)

[Boyan Silyavski]

Hi, it was early in the morning so did not have time to write much. Like Dean said, the board will work but you loose axis.
I have no faith of China so i do the same, check all with meter. Especially the ground.

I always use contact from the VFD on the Estop chain so all stops if motor digs in material and VFD trips or if there is a trip for any other reason.Seems Y1B and Y1C in your case, check manual further.

[Noplace]

Here is the full manual for the VFD:
https://drive.google.com/open?id=0B8...UlV&authuser=0

if anyone has time I would appreciate you checking it.

from what I understand:

there are function pins (X1-X8) that can be programmed for multiple functions but default is shown in the diagram showing:
X1 - forwrad start
X2 - reverse start
X3 - stop

so if I can get the right way to hook into these I think it will work.

but also in the manual it states we have to change some default settings to allow controlling start/stop and frequency from outside.

but what I don't understand in general is the need for relays, maybe someone with electronics experience can explain it, isn't it possible to just hook the pins coming from BOB to the inverter input ? unless the relays give a higher voltage?

I understand how relays work (a bit lol) but was wondering how they are functioning in the C6 ( are they outputting 12v being controlled by 5v) ?


anyways thanks for reading and hope someone is bored enough to open the manual and read through! haha

[JAZZCNC]

Ok well the need for a relay is to act as the switch.
The vfd will provide 24V source which you take to which ever input you want to use. The relay acts as a switch and keeps the digital input using the same potential as the source.
If you use an external voltage it won't be at the same potential.!!!!! . . . . Hey what the hell is the Potential he's asking him self.?

Basicly it's ground and all it means is the digital input needs to use the same ground as the source voltage. (Or often other way around and Digital input provides 24V which returns to Com ground)
Either way there must be a path back to ground for the cicuit to be made.

Relays: Well from your statement then I don't think you do fully understand how a relay works.? A relay is just a electro mechanical switch and doesn't output any voltage.
The coils of the relay are controlled by voltage you or the device controling the relay apply. The Contacts of the relay are the switches which open or close depending on type. NC or NO.

In the case of the C6 board the Coils are controlled thru the BOB using "M" commands in g-code. The contacts you just use to make or break a circuit.
IE: M3 would turn on the relay coils closing the NO contact which you run the wire from 24V source on VFD thru one side of contact and back out the other to Digital input on VFD.

[Noplace]

thanks that's a good explanation, I had a vague idea of relays but forgot since its been a long time I read about them.

still I'm not 100% clear on it. the relay will be my switch to turn on/off connection between VFD ports. relay has 3 pins : NC/NO/VLIN
-connect 24v to VLIN ?
-connect X1 to NC ?

or

-connect COMM to VLIN
-connect X1 TO NO

or

-connect 24v,comm,X1 to NC,NO,VLIN

sorry for sounding stupid but I need to be sure and understand correctly.

[Noplace]

Vendor sent me this to assist also, seems the frequency control is DC so not sure if I can use my board :(

[Boyan Silyavski]

Hi,
Don't make it more complicated than it is. And RTFM. Read the manual i mean Ok i read it for you so:

What you need to make all work in real life and what you would actually use are exactly 6 things:

1. connect the 3 wire cable to the VFD to power it - 2 x 230v AC wires to L and N to power the VFD and connect ground wire to PE

2. connect U V W to the spindle and the shielding of the cable to the spindle ground or body.

3. connect one of your BOB relay outputs to X1 and Com. When the relay is closed by Mach3 the spindle will start

4. connect via 2 wire the 10VDC output from the C6 board to the VFD, where +10v goes to AVI and ground to COM on the VFD. Thats the spindle speed control

5. optional: split the estop wire and connect both sides to the Y1B and Y1C, so when the VFD is powered all will be ok and the continuity normally closed, if the VFD trips due to bit dig in material or whatever the contact will open and CNC will Estop.

6. program the VFD:

assuming you have bought 2.2kw water cooled spindle you must leave all default and change only the following:

P002 just check if its right for the motor you have bought, 220V default value
P003 400


these 2 are not clear to me. Normally on other inverters its the only place to say the motor accelerates and decelerates for 10 seconds. But in the manual i saw other place also. So - program them as bellow and if the motor continues to accelerate after 10sec and is not completely stopped after command for 10 seconds, then clean them both to 0
P013 10 and remember at mach3 to make for 10 seconds spindle start and stop delay at the spindle screen
P014 10


P021 400
P025 0 this when you have successfully control the start run and speed via mach3. You wont need more to touch the VFD for any reason after that

P064 1 again-you don't need to touch the VFD once all is working, all can,should and i would say: for the sake of not forgetting something - must be done via Mach3 Do yourself a favor and buy a good screen like MachStdMill

P065 1 same what i said above

P067 0 believe me on this, you don't need reversal . the only thing that could happen is you make a mistake and break expensive bit, have been there, done that


PS. Thats it, its not so difficult. Check again what i say for any mistakes and be happy chappy

PS2. Yes, my VFD has connected PE ground both to the ground of cable that powers the VFD and both to the spindle cable and hence the spindle ground. Difference is that i have the separate ground connections on the VFD to do that / Mitsubishi brand/ So i believe both ways is ok. Even if you don't connect Spindle ground to VFD ground it will work, but remember to properly ground the machine itself

[Clive S]

connect U V W to the spindle

When the spindle starts for the first time make sure it is rotating in the correct direction if not reverse two of the phases ie swap U and V or U and W that will reverse the direction. ..Clive

[JAZZCNC]

Yes it will work fine the C6 board is putting out a DC signal.

Ok well this is a different diagram which looks like the Analog com is isolated from input logic and will work. It also resembles the terminals on the actual VFD.

So in this case you are ok and the C35 board will work. Wire it like below.

[Noplace]

Man you guys are awesome! thanks a million silyavski for the details. and Jazz for the confirmed diagram!

now just waiting for the Spindle shipment to try it out!