hurco hawk 5 retrofit

[martyscncgarage]

Thanks for the advice Marty! The wire I purchased is mtw wire and it’s not shielded. Are you saying all power and signal wire should be shielded? Any recommendations on a good source? Thanks for letting me know about the back panel material will defiantly keep that in mind.

As far as the 1.3 kw servos, I went with them because I did some google searches and found that the 40in lb dc motors were comparable to around 1.1kw if I’m not mistaken and I figured I would rather be slightly over powered vs under. As much as it costs to do a retrofit I did not want to have ANY regrets later on down the road!

All signal wires (stepper,direction, VFD cable, etc.) should be shielded and only one end of the drain wire taken back to one ground point. Where the service power ground terminates.

You should be fine with those servos even direct driving the screws.

[jtroedel8487]

Small update and some quick questions! I'm starting to get the bench test together and am confusing myself a little bit on how to go about feeding the system with the 220volt single phase power. First, does the machine need its own dedicated main breaker or fuse before branching out into other circuits? the machine is powered from a dedicated 60amp breaker coming from the panel on the wall. My plan was to have all circuits on breakers before going to specific items similar to how slodat did his tree 425. Is 12awg mtw fine for the main feed going into the terminal blocks before being branched to specific items? Do I want the line reactor feeding the whole cabinet or just the circuit that the dmm drives are on? Any suggestions on a good spindle encoder option? thanks!

here is a pic of the bench test setup Im working on. I'm about to go ahead and order the quench arcs and additional terminal blocks. I'm going to order the emergency stop switch that centroid sells along with the wireless control pendent.



Also I have been starting work on designing my control enclosure. Playing around with ideas. I plan on some how utilizing the wireless pendent with the control panel because I really would like to have a physical hand wheel for tool setting and job set ups.

[martyscncgarage]

Use the attached draft schematic as a guide. It might be helpful.

Suggest you consider the Wireless MPG. Its quite versatile. No need for all the buttons, especially if you use a touch screen.
Marty

[jtroedel8487]

Made some progress this weakened, thought I would share where I'm at so far. I have 240 volts give or take feeding into my main terminal blocks. Ground coming out of the panel going to an isolated set of terminal blocks. From there I am feeding 240 volts into a 50 amp double pole breaker than going into my line filter --> Line reactor --> Estop contactor and than from there will be going into another set of terminal blocks (didn't order enough so don't have yet) that will branch out each line to feed all 3 drives main power. I came off one hot leg, neutral terminal blocks, and ground blocks to feed 110 volts into the 24 volt power supply. the power supply is wired into a 15 amp breaker. 24 volt + is running directly into the the contactor with the - going to the E-Stop switch --> acorn output relay board (relay 1) --> than into the contactor. Used the Acorn to DMM schematics for estop input wiring. That's about as far as I got. Took me about 4 hours to get to that point, taking my sweet time not trying to fry any of these electronics!

E Stop is working as it should being triggered with the estop soft key in CNC 12 and also working with the physical switch.





Does 240 going into the DMM drives need to be supplied with shielded cable or is the MTW going to be fine? thanks!

[martyscncgarage]

The Acorn power supply will run on 240vac. Most will. Look at the label
You ran four wires from your power source?
2 hots, neutral and ground?

[jtroedel8487]

The Acorn Power supply and computer is being powered right now from a wall outlet. Mainly because I'm being lazy as I will hard wire it in once its wired into the cabinet. Yes 2 hots, neutral and ground. Is this ok?

[martyscncgarage]

Frankly I would use 120/240 power supplies and run them off 240vac

[jtroedel8487]

That does seem like it would make things a little more simple. I’m learning as I go, no experience in wiring up industrial machines so I’m not aware of standards or anything. Thanks for the advice

[slodat]

I do the same - power anything that will accept 240vac from the incoming 240vac. Makes things simple.

[jtroedel8487]

The electronics are now in the control cabinet and I have been slowly getting everything wired up into its final spot. There is a ton of thought that goes into laying out your panel! I tried to keep high voltage on the right side and "most" of the low voltage on the left. It's not perfect and I suppose if I run into issues with emf I will have to do some rearranging in the future. So far I have the Acorn communicating and controlling the drives and servos. Also have the Huang Yang VFD communicating with acorn. There was a couple of posts on this forum that I found that helped a ton! I picked up the wireless control pendent and must say the quality is really nice! I plan on attaching it to the control for the machine in order to have a control wheel for setting up jobs, positioning the table etc... There is still much to do. I need to add cooling fans to the cabinet and to the spindle motor. Need to get my inputs set up for flood coolant, mist coolant, spindle brake etc... I also have a braking resistor to wire into the vfd for spindle breaking.

One issue I have noticed is when using the touch on my control computer with cnc 12 it occasionally freezes to the point of having to restart the computer. it only appears to be doing it while running cnc 12. curious if anybody else has had an issue with this? thought about uninstalling and reinstalling cnc 12 and seeing if the problem persists.

Heres some photos of the cabinet as it sits today...




The servos are not yet mounted to the machine, thats why you see the drive wires running outside of the panel. Just temporary!