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Messages - Transformer

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1
General Mach Discussion / Re: Threading reboot
« on: March 29, 2016, 03:23:57 PM »
Yes light on the sensor goes on as spindle rotates and seems to be regular and not fluctuate like the numbers in Mach3.  I have tried changing every setting I can think of.  None make any difference.  Makes me wonder why there are so many settings when most of them seem to do nothing.

So now I will take a break from this most annoying problem.  When I figure out how to do it I will try version .62

Thanks for your efforts.

2
General Mach Discussion / Re: Threading reboot
« on: March 25, 2016, 10:00:33 PM »
Rich: Thanks for the suggestions.

1.  Yes, spindle feedback was checked.
2.  Checked spindle speed averaging.  This made no difference.  Spindle speed readout was as erratic as before.
3.  Ports & Pins, Index. Checked Active Low.  This made no difference.  Spindle speed readout was as erratic as before.
4.  Plug in control.  Nothing is checked but I did get a picture of myself.
5.  Yes, I have M3 in my setup lines.

I am amazed that nothing changed, especially when putting on spindle speed averaging.

I take it from your suggestions that you feel this is a Mach3 issue and not a hardware issue?

Thanks.

3
General Mach Discussion / Re: Threading reboot
« on: March 25, 2016, 09:01:27 PM »
Wire from spindle sensor goes to pin 13 on parallel port.  In Pins & Ports, index is enabled, set to port 1, pin 13, active low X, emulated X

4
General Mach Discussion / Re: Threading reboot
« on: March 25, 2016, 07:51:43 PM »
My system is a parallel port from my computer to a Camtronics controller which is based on a Gecko board.  The spindle sensor signal goes into the Camtronics unit.

http://camtronics-cnc.com/stepper-components.asp


5
General Mach Discussion / Re: Threading reboot
« on: March 25, 2016, 07:08:56 PM »
The proximity sensor I am using is from Automation Direct http://www.automationdirect.com/adc/Shopping/Catalog/Sensors_-z-_Encoders/Inductive_Proximity_Sensors_-z-_Proximity_Switches/8mm_Round_Industrial_Automation/Standard_Sensing_Distance_(8mm)/AE1-AN-1A
and is one that was recommended by one of the knowledgeable people on Hobby Machinist (Dawson).  

The Hall sensor is one that came with a MachTach kit I ordered and all his other bits and pieces have worked flawlessly, but that kit only gives RPM readout, it does not feed it into Mach3. With the MachTach I used an optical sensor and since a Hall sensor came with the kit I put it to use to get spindle speed readout into Mach3.  This setup allows me to compare the accurate MachTach readout with what I am getting in Mach3.

Spindle speed is controlled by hand directly at the VFD, and spindle speed is not controlled through Mach3.  I am just trying to get an RPM readout into Mach3, not to control spindle speed.

Hope this helps.

Mach3 is version R3.043.066

6
General Mach Discussion / Re: Threading reboot
« on: March 25, 2016, 05:51:30 PM »
So, carrying on.  The proximity sensor will give me wildly varying RPM numbers varying in a random pattern from actual RPM to 1/2, 1/3, 1/4 etc of actual RPM, but never a readout greater than actual RPM.

Then I tried a Hall sensor.  Again wildly varying RPM but of no discernible pattern. Running at 300 RPM I get readings varying from 1 to 30,000. This time a shielded cable.

I have played around with debounce levels, varying spacing for the sensor, etc but as far as I can tell nothing has made any difference in the readout pattern.

Does this sound like a hardware problem or a problem in my Mach3 settings?  And if the problem might be in the settings, where should I start to look? 

Thanks.

7
General Mach Discussion / Threading reboot
« on: March 24, 2016, 09:02:44 PM »
Nothing has worked so far so a fresh start.

1.  To get threading to work I need to get a stable readout of actual spindle speed into Mach3.  Is this correct?  Or does the input signal have to be of a certain form? (Absolutly no luck getting a stable readout using two different proximity sensors.)

2.  If I figure out how to do the slotted disk, optical readout approach to get spindle speed into Mach3 do I have to worry about noise from the VFD or other source corrupting the signal? Special wiring needed etc?

3.  Once I can get a stable spindle readout into Mach3 then the hardware part is finished and from there on it is pounding away at Mach3, OR do I need more index input signals? I am operating under the assumption that if I can get a stable read out of spindle speed all my hardware issues are behind me, agreed?

Thanks.

8
General Mach Discussion / Cable length
« on: March 12, 2016, 01:07:19 PM »
I have convinced myself that my computer problems, locks up, will not load, sometimes OK, are due to the computer being located in my garage which can be cold and damp here on the wet west coast.  Is it feasible to move the computer into the house and then run 20 ft. cables for mouse, keyboard, screen and controller, or will the length of the cables make the whole system unstable?  Computer and machine are used on an irregular basis and it can be a week between times the computer is on.

9
General Mach Discussion / Re: Index RPM will not return to zero
« on: February 02, 2016, 12:16:51 AM »
Well you are making progress, I am going backwards.  I was getting a spindle RPM read out, but before I tried your debounce change I decided to change my motor setup into metric.  I am working in metric and my ball screws are in metric.  All seemed to go well and my programs run as before, BUT I no longer get a spindle RPM read out.  I then did try raising and lowering debounce, moving my sensor back and forth but nothing worked.  The sensor seems to be working as the light on the sensor flashes for each revolution.  What a pain.  Any ideas?

10
General Mach Discussion / Re: Index RPM will not return to zero
« on: February 01, 2016, 02:55:32 PM »
Magnetic sensor I would guess as I am just using a bolt head passing by the sensor, single pick up.  One other thing is that the RPM reads to about 750 and then the read out in Mach drops to half the actual RPM.  You experience anything like that?

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