Messages

1

Mach SDK plugin questions and answers. / Re: Shuttle Xpress Problem

« on: March 21, 2008, 02:44:00 AM »

I think I have exhaustively read every post on the shuttle and I still cannot get mine to work.
I have my buttons responding but cannot get the wheels to do anything.

Also when I toggle shuttle off (from the tab pop out) My axis jumps a few 10 thousands.

Also by toggling shuttle off I cannot use my keys or mouse unless I close and re-open by the tab key.

I keep reading set to inc. and not cont. but I do not see anywhere to select Inc. I can select values of Increment, but the Jog Mode says Cont. or Step, I'm assuming the step is the Inc. being refered to? However when I select shuttle mode it jumps to MPG anyway??

Extremely confused and requesting help...

BTW, I did test the Shuttle with it's software and removed the contour program before introducing it to MACH3, I get prompts saying it's recognized, and text responses for the buttons, just no movement....

Plugin and Mach3 are both most recent versions I could find...

2

General Mach Discussion / Re: phantom limit switch

« on: March 19, 2008, 03:34:02 PM »

One Last thing ( I Know famous last words ) Anyway, everything previously seems to be cured. We switched to NO limit switches in parallel as well as replacing them all, also added sheilded cables to the limits, thought only the motors had to be.

Anyway, the current issue, and hopefully the last is on a Ref. All Home command, about 1 out of 3 times it engages a limit swicth stop as it's reversing out whichever axis homing (all three have this issue randomly however it's usually just one axis each time).

So it doesn't back away enough to release the switch before the limit switch takes over. I tried changing the speed, and debounce, neither seemed to help. Is there another setting I can tweak??

3

General Mach Discussion / Re: phantom limit switch

« on: March 12, 2008, 12:26:39 PM »

Switches, are 2 per axis NC wired in series. They're new but something thats been laying around are warehouse for a decade or so...

Didn't quite understand your ref to the pull up / pull down resistor though.

I have a scope, but it's buried in my garage, antique tube type HP unit... (Lets hope we don't need to get that out)

Was going to use proximity switches but with the design of the machine being fairly open, I was concered with debris/chips setting of the proximity sensors

4

General Mach Discussion / Re: phantom limit switch

« on: March 11, 2008, 08:28:27 PM »

O.K. I had to do everything on the list and step 9 was last, and what it finally took. The motors are running great, BTW Geck suggest 20x phase voltage and thats puts us around 48v.

Now the Phantom limit switch is back though......

I set the debounce up to 2000 and seems to be OK for initial test.

Speed is satisfactory for me on motor tuning at 150 feed.

These is still an occasional spike in the driver test but nothing continuous like before, mostly flat..

There's a slight chop in the motor but I think I can tune it to a minimal with more time.

I'll call it success for now, unless you have any better ideas for the phantom limit. It's consistantly on the Y axis only. 

5

General Mach Discussion / Re: phantom limit switch

« on: March 11, 2008, 05:29:56 PM »

O.K. I can try that, I have another transformer but we calc'd the output to near 78VDC and the drives are limited to 80 so I opted for this other I had laying around , however just for good measure I did the Driver test again and now I have crazy spikes.....

Almost a solid wide black line...

Perhaps I didn't have the driver loaded properly on the previous test???

What can be done now??

I was shooting for crazy high speed, I just really want the motors to smooth.

6

General Mach Discussion / Re: phantom limit switch

« on: March 11, 2008, 02:43:21 PM »

BTW, my motors are NEMA 23 269in/oz and have ratings of phase current = 4.2 amps & phase resistance = 0.46 ohms
My power supply is measuring out at 44vdc..

7

General Mach Discussion / Re: phantom limit switch

« on: March 11, 2008, 02:22:22 PM »

There is no 120vac ground connection on my BoB. I doubt my Dell laptop power supply has a GND connection either.

I'll refer to the BoB manufacturer for direction.

8

General Mach Discussion / Re: phantom limit switch

« on: March 11, 2008, 01:32:10 PM »

I have a solid 5v on the DIR and about 1.5v on the STEP.

From another post on this thread I suspicious now of the GND on the printer port. Would this just be common between the BOB and laptop/printerport or should/must there be an earth ground?

9

General Mach Discussion / Re: phantom limit switch

« on: March 11, 2008, 12:27:06 PM »

Did, the driver test initially almost perfectly flat, Also my BOB has it's own power supply for the 5v drivers, I haven't tested the actually output but it's not being powered by the laptop. Changed the Kernel speed to no effective difference. 

The Debounce seemed to fix my limit switch issue, although I think that error is also a pin setting as the results are:
 x limits show on the m1++, m1--, m1 home and m2--
 y limits show m2++ and m2Home
 z limits show all m3

I'm sure I can figure the pin settings myself, I'm really more concerned about getting the motors to a better place. I'll try some of the optimizing...

BTW, on the Gecko drives should I be messing with the trim pot at all or not yet?? Not very clear in the gecko literature.

10

General Mach Discussion / Re: phantom limit switch

« on: March 11, 2008, 11:03:53 AM »

Signals grounds are direct to my BOB which apparently has a floating ground as was told not to ground to case/earth.

xylotek /sound logic / campbell design BOB