[nateman_doo]

Tonight I will likely mess around with the VFD some more. It still has no torque. ugh.
The steps he gave me after setting it back to default was to enter the motor info,
then:
1. 4.13 change to 3 or 4
2. 4.00 change to 2
3. 3.00 change to 1
5. 6.04 & 6.05 change to 1 (enables braking resistor)

parameter 9.08 set to 99 sets the unit back to default.

[keebler303]

Nate

If you list what those parameters are and what you are setting them to it would be easier for us to add our $.02. I don't want to have to go dig up the manual every time I try to help...

Matt

[nateman_doo]

heh... sure. I still have plenty of stuff for my DYING X2 to do, but I will try to do that. I wrote that last post for myself since I forgot to bring my notes home with me from work yesterday.

[nateman_doo]

WEE!!!! found all the torque!!! took me over an HOUR with tech support, but we auto tuned it, set it for sensorless vector... ANNDDD.. wired the motor for 230V. It was pre-wired for 460 volts.

Now trying to figure out where the 0-10V went!!!! ugh.. never ends.

[nateman_doo]

after a night of tinkering I will leave Mach alone. I got 10V at "1000" rpm, and 5V at 400 RPM. The lowest I can go is M3S200, but I can slowly lower that number manually. I got OODLES of torque, BUT I am slightly confused.

After an hour of tech support this afternoon I got it all working. The part that is confusing, is the motor says 60Hz, and max rpm at 3360. When I measure the spindle RPM @ 10V, I get something on the order of 5K. I know the V770 spindle can do 10K. What is wrong.. the motor data plate? my tach? my VFD?

The only thing I think my help, is re-auto-tuning the motor since it was auto tuned for 400 volts rather then the 230V. Not sure if that has anything to do with anything... but I can get 5K on my X2.

[nateman_doo]

calling it for the night. I drilled 2 holes in the main top plate. Something like a 27/64 or whatever, a few bits down from half inch to tap a 1/2-13 hole to mount a vise. NO pilot hole, just straight in there, and the machine ate it for breakfast. Nice to know I will be able to make a tool plate with relative ease.

[keebler303]

after a night of tinkering I will leave Mach alone. I got 10V at "1000" rpm, and 5V at 400 RPM. The lowest I can go is M3S200, but I can slowly lower that number manually. I got OODLES of torque, BUT I am slightly confused.

After an hour of tech support this afternoon I got it all working. The part that is confusing, is the motor says 60Hz, and max rpm at 3360. When I measure the spindle RPM @ 10V, I get something on the order of 5K. I know the V770 spindle can do 10K. What is wrong.. the motor data plate? my tach? my VFD?

The only thing I think my help, is re-auto-tuning the motor since it was auto tuned for 400 volts rather then the 230V. Not sure if that has anything to do with anything... but I can get 5K on my X2.

Nate

I don't remember what the 2 pulley ratios are but in the high range your motor should be going 10,000/pulley ratio. You probably have the VFD set for 3360 max and what you actually need to do is set the VFD so it will go faster. You have to be careful not to go too high because you can kill the bearings in the motor but if Tormach says it is good for 10k then you should be able to increase the max speed (or frequency) setting in the VFD to get 10k on the spindle in high range.

Matt

[nateman_doo]

SO why would Tormach put a motor in their unit that only does 3K?

Got the vise in a hasty mount:


and with that I managed to make a prototype air/liquid distributor that I showed earlier:

The one line in (water right, air left) will be distributed all around 180° of the spindle. First cut with the machine works well. There are some vibrations, but the machine is still untrammed, and unbraced. The "hurry ups" are in full swing. Mostly because my X2 is on its last legs.

[keebler303]

It's not that it only "does" 3k, but it's rated speed is around 3600 RPM. It is a 2 pole motor operating at 60Hz. 60 cycles (two poles) per second times 60 seconds per minute gives you 3600. The motor does less than that at 60Hz (3360) due to "slip" in the magnetic field. The motor has a "rated" speed, normally at 60Hz, and then a max speed, governed by the bearings or the balance of the rotor which could be more than double the rated speed, depending on the motor. Tormach should be able to tell you the maximum rated speed or max frequency to achieve that speed for the motor. Then you just have to get your VFD to drive the motor up to that speed. I'd guess with everything setup correctly, your spindle will be near 10k RPM.

Matt

[nateman_doo]

I guess I could call Tormach and get some specs on that motor. I actually tried getting the spindle to 10K. I got it to about 8K before the motor started acting funny. Or the VFD. Had this weird crunching noise, the motor would move slowly, and the VFD would go into over current protect.

So here is the process to get to the basics in the VFD (really this is cause im too lazy to write it down it carry it around - or i would loose the paper)

Step 1 REMOVE THE BELT from unit, NO LOAD
9.08; 99 (set unit to default)
0.00; 240 (motor Voltage)
0.01; 3.3 (motor amps)
0.02; 60 (freq)
0.03; 3360 (motor base rpm)
0.04; 7000 (max rpm)
now comes the auto tune:
0.05; 1 run it
0.05; 2 run it again
2.10; 2 (sets sensor-less vector)
Then set the accel/decel times etc, and enable the braking resistor.
Thats enough to get anyone going with it.


I did some aggressive cuts in Aluminum last night and the machine ate it alive. (aggressive by X2 standards) 0.1 depth of cuts with no coolant, about 19 ipm. The finish wasn't very pretty, but the vise isn't exactly the most secure, and the tool plate floating in the vise is just a temporary thing. Just trying to make that collar posted earlier. Lots of fun messing around with the unit. I will post some videos.

[nateman_doo]

Just tried it out. the reset was perfect! S800 is 10V, and S400 is 5V. Just need to get the tach and make a small chart and I can be done with it. just sitting in the manual data input typing s800, s700, s600 etc, bring it down. Effing love it.

[Dylwad]

Chart for what? You should be able to put the max rpm and pulley ratio into Mach3 and adjust it so s8000 = 8000 rpm and so on...

And you should have an rpm scaling option in the vfd to make it display actual rpm.

Sent from tapatalk

[nateman_doo]

chart being:
mach rpm freq
800 3250 120Hz
750 3052 111Hz
700 2850 103Hz
650 2645 096Hz
600 2440 088Hz
550 2235 080Hz
500 2033 073Hz
450 1830 066Hz
400 1645 060Hz
350 1454 052Hz
300 1248 045Hz
250 1048 038Hz
200 0848 030Hz
150 0655 024Hz
100 0477 017Hz
050 0285 010Hz

This was measured with the low gearing pulley set. I would love to know how to to have it actually display the RPM's. This VFD has TONS of options, so I am sure its there. I will have a talk with tech support on how to do it, but Mach scaling will be the hard part. I am inclined to leave it alone simply because it works.

[keebler303]

I think you are getting close.

As Dylwad said, S3250 should give you 3250 RPM in low range.

What are your motor tuning numbers for the spindle?

Based on what you have said, I am going to guess you have it set for 31.25 steps per and 800 max velocity?
I recommend setting it to 7.69 steps per unit and max velocity of 3250. That should give you 10V with S3250 if you are running a 25KHz kernel speed (you can see the kernel speed on the diagnostics tab). Give it a shot!

Matt

[nateman_doo]

[nateman_doo]

What the hell??? did the forums just change AGAIN?!? Everything is smooshed to the right of the screen.

Keeb, gimme a second to digest what you wrote.

[nateman_doo]

I think you are getting close.

As Dylwad said, S3250 should give you 3250 RPM in low range.

What are your motor tuning numbers for the spindle?

Based on what you have said, I am going to guess you have it set for 31.25 steps per and 800 max velocity?
I recommend setting it to 7.69 steps per unit and max velocity of 3250. That should give you 10V with S3250 if you are running a 25KHz kernel speed (you can see the kernel speed on the diagnostics tab). Give it a shot!

Matt

This is what I have right now.
Current Pulley is 4, min speed 0, max 8K ratio 1

Steps are 8000
velocity is 176
Accel is 32.1
Step pulse is 0
Dir pulse is 0

[nateman_doo]

I feel like the forums have changed for the 3rd time during this thread alone. This one is by far the worst.
Before:
Attachment 189576

After:
Attachment 189578

looking at this on a 1024x768 screen must be awful.

[nateman_doo]

The coolant/air ring:

[nateman_doo]

The smaller nozzles are for air, and the larger ones are for liquids. The air, and liquid have 180° of directions.