Build Thread Mach3 to Acorn

[Leo Voisine]

OK - back to the upgrade.

I mounted the new homing switches, a new ESTOP and mounted the American Acorn in the cabinet. Lots of simple metal fabrication, diliing and tapping.

I got power to the Acorn - OK
I got the ESTOP working as it should - OK

Now I need to hook up the spindle.

On the XHC bob - there are 4 wires. One is labeled PWM and one is labled 0v. I connected PWM to H8 - out and the 0v to H8 GND. The other 2 wires are labled GND - but - I measure voltage and they are connected to the Fuling inverter to some termenals that are not labeled GND.

I am not sure where to look for more information.

[suntravel]

H8 is not for PWM, it is 0-10V.

Is your spindle controlled by PWM or 0-10V?

Uwe

[Leo Voisine]

OK, this is new ground. I do not know. I was assuming PWM is the 0-10 volts. I don't know what PWM is.

I am currently looking at the AcornSIX, Fuling DBZ Series VFD hookup. It is VERY different from what I have with the XHC motion control card. With the XHC control board there are only 4 wires as I stated above. On the AcornSIX, Fuling DBZ Series VFD hookup schematic there 9 connections to the Fuling terminals.

I don't know what I am doing and I don't want to blow anything up - BUT - I can learn.

I don't know what the Chinese philosiphy is and I don't really care.

I want to hook this up in whatever makes the best sense for this upgrade. I don't mind rewiring this according to Centriod best practice.

What road should I travel?

[suntravel]

PWM is pulse wide modulation, H8 is no pulse but voltage without pulsing from 0-10V.

Uwe

[centroid467]

OK, this is new ground. I do not know. I was assuming PWM is the 0-10 volts. I don't know what PWM is.

I am currently looking at the AcornSIX, Fuling DBZ Series VFD hookup. It is VERY different from what I have with the XHC motion control card. With the XHC control board there are only 4 wires as I stated above. On the AcornSIX, Fuling DBZ Series VFD hookup schematic there 9 connections to the Fuling terminals.

I don't know what I am doing and I don't want to blow anything up - BUT - I can learn.

I don't know what the Chinese philosiphy is and I don't really care.

I want to hook this up in whatever makes the best sense for this upgrade. I don't mind rewiring this according to Centriod best practice.

What road should I travel?

Please post a picture of the current wiring to the VFD. What terminals are the two "GND" wires going to?

What are the current values of the following VFD parameters?
* F2.01 (S1 terminal function)
* F2.02 (S2 terminal function)
* F2.03 (S3 terminal function)
* F2.04 (S4 terminal function)
* F2.05 (S5 terminal function)
* F2.06 (S6 terminal function)
* F2.19 (M01 terminal function)
* F2.20 (MO2 terminal function)
* F2.21 (Relay A-B-C terminal function)

With only 4 wires and the knowledge that this machine is a router, I am going to assume that it was set up to run in only one direction. It is likely that the two connections labeled "GND" are going to one of the input terminals (S1, S2, ... , S6) and a terminal labeled "DCM". The input terminal is most likely assigned to command the VFD to run FWD so the corresponding parameter will be set to 1. If they were smart, they would have used input terminal S1 and left it at the default setting of 1.

Our schematic has more connections because it is drawn for both FWD and REV running with VFD fault output to the control and fault reset commanded by the control. The minimal connections I would recommend for single direction running are:
* Acorn H8 AN_OUT to VFD VI terminal
* Acorn H8 AN_GND to VFD ACM terminal
* Acorn output relay signal SPIN_FORWARD to VFD S1 terminal, VFD parameter F2.01 set to 1. The common terminal of the relay should go to a DCM terminal on the VFD through a spare or auxiliary contact on the main contactor so it stops running during E-stop conditions. Follow the schematic you found (S15166) for how that should look.
* Acorn output relay signal VFDResetOut to VFD S4 terminal, VFD parameter F2.04 set to 7. This signal return to the VFD should NOT go through the contactor and should go directly to a DCM terminal.
* VFD terminal C to an Acorn input (H4 or H1) assigned the SpindleOk function.
* VFD terminal B to the GND/common terminal of the power supply used for the Acorn inputs.

[cnckeith]

and please follow the spindle bench test procedure in the Acorn Manual! starting on page 30
https://www.centroidcnc.com/centroid_di ... manual.pdf

don't hook anything up unless you know what it is

[suntravel]

Yep.

Stupid simple VFD or servo spindle setup for only one direction is 0-10V H8 and VFD Enable Output on Acorn.

Set up the VFD to work with it, then go on to use Spindle Ok Input ect.

Uwe

[Leo Voisine]

Yep, I also read another poster with a almost example with the similar setup as you are suggesting here. Yes only one direction. I will wire it up accordingly.

[Leo Voisine]

OK, I know I can be a little dense at times, but this spindle hookup has my head spinning.

I saw this posting and Reeds machine is very similar to mine. Seems like the hookup should be about the same.

I am a little unclear as to what some of this means.

Also a bit unclear on which of the three connections on the OUT relay that I should connect to.

I did my best at a schematic. Could you look at my crude schematic and tell me what is right or wrong with it.

Re: Acorn to Fuling DZB280B002.2L2DK_VFD Wiring Questions
Post by Reedk22 » November 28th, 2024, 7:42 pm

Thanks Centroid467! So far, so good. I hooked up S1(Spin Fwd) and GND (Common/Return) wires to the OUT4 relay , and the AVI and ACM wires to H8 on the Acorn. I added a wire from S4 on the VFD to the Out6 relay on Acorn, a wire from the VFD C terminal to IN5 on Acorn and finally, a wire from VFD B terminal to the H9 COM terminal on the Acorn. I'm able to turn the spindle on and adjust the speed using the Digital Read Out in CNC12, the spindle stops when I hit the E-Stop. I'm calling that a win.
Thanks again

[centroid467]

Everything except the connections to relay outputs 7 and 8 look correct.

Use the Normally Open (bottom in this orientation) and common (center) terminals for these connections. Put S1 and S4 to the NO terminals and then connect the relay common terminals to the DCM terminals on the VFD.

If you pull out the little 3 pin terminal block plugs from the relay board, you will see a graphic similar to what is shown on our schematics in case it is not clear which terminals are NO or NC. I have to do that myself sometimes.