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Messages - grahamatcadcam

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1
VB and the development of wizards / Cypress error
« on: May 06, 2011, 04:14:19 AM »
While adjusting some servo drive settings and we would restsart Mach and when running the Home routines the attached message would appear and  system would error out.

After a reboot and restart it would behave correctly.

This is a new installation this year running on a license and been performing correctly for nearly a month.  Till to that is!!.

Any ideas as to why??

Regards

Graham

Screen dump of error is attached.

2
dspMC/IP Motion Controller / Re: Problem with the Z axis.
« on: January 26, 2011, 01:09:50 PM »
Hi Rufi,
Thanks for reply. We are leaving shortly for site and by end of day hope to have all working. Its only the Z axis we have issues with. The X, Y and B(tool changer) all appear to be working fine.

OK on Manual. I guess you have heard it before but the manual is important to us initiates and I do not mind sending back constructive comments to assist you from an end user.

Re e-mails.  No nothing on homing from you.  It seems that only Skype and the Forum are working for you/me. My e-mail addresses are not receiving any msgs from you.

Forum is OK maybe a little public but working. Skype is also fine I can use it on site which may be a bonus!!

Regards

Graham

3
dspMC/IP Motion Controller / Re: Problem with the Z axis.
« on: January 26, 2011, 01:41:21 AM »
Hi Rufi,
One other area we are wondering about.
The Fuji servo drive is set upand wired in Torque mode. Velocity mode is available but I will need to rewire the cable and set the drive for this.

As it was in Torque mode we followed suit.

You may be able to advise if this is an issue or what/when does one choose Torque or Velocity mode?

Regards

Graham

4
dspMC/IP Motion Controller / Re: Problem with the Z axis.
« on: January 26, 2011, 01:21:09 AM »
Hi Rufi,
We are using the settings listed in the manual. Its hard to get a feel for what the numbers should be when we cannot run the axis.

Any better numbers to start with would be a help?

Regards

Graham

5
dspMC/IP Motion Controller / Problem with the Z axis.
« on: January 25, 2011, 11:32:52 PM »
Hi,
I hope you can shed some light on the last (known) problem on our router retrofit using Mach and the 7762M  Vital motion control box.

The Z axis is unreliable. it will run at up to about 700mm/min apparently reliably. The X Y and B (Tool Changer) are all workin fine.

With the Feed in exceess of this it will start then run at a much faster speed apparently for ever. Of course the Z axis travel is only 300mm so we quickly hit the stops.

It happens if the move is +ve or -ve direction.

We have been unable to improve this behavious except by running at very low speed.

It is not the drive or servo as we have swapped in replacements which did not elininate the problem.

Likewise we have eliminated the connector cable betwee the Vital systems box and the drive.


Our impression is that it is either Mach instructing the 7762 or the 7762 making a velocity output in excess of reasonable.

The position DRO's indicate normal and do not reflect the increased speed.

The servos and drives are FUJI and the operating system on the PC is XP

Currently we are stumped and would appreciate any comments and assistance

Thanks

Graham

6
Hi Mike,
Thanks we tried that today and it worked.

Can I respectfully suggest that some of these practical setuo issues should be in your manual>

Recerse direction and how to set up Slave Drives are 2 issues we have had on our current project!!.

7
Hi,
Please advise how to reverse the servo directions in a MACH/DSPMC setup.

Changing the dir in PORTS and PINS in motor setup does not have any effect.

Regards
Graham

8
General Mach Discussion / Re: hickup at 12 and 6 oclock
« on: April 19, 2007, 10:13:01 PM »
Hi

I have just got back from the workshop. Its about 8Km away and not always accessible due to production isues.

I have deleted the G64 (having tried G61) G61 was worse, removing the G64 seemed to of made a slight improvement. Not sure what this did as its not in the manual. I had assumed it was a smoothing function or look ahead!!.

F1000 is what we are running, we would like to run up to about 1600 if possible.

In the motor settings I have 1280 pulses per unit, maxed out Velocity, about 1800 (from memory) Acc is set to 150

As a last resort I un ticked the Advanced Compensation Analysis. This seemed to be a further improvement.

However we can still see (and feel) a variation at the 12 and 6 oclock positions.

Ran at 35,000 then tried 45,000 pulse setting.

Task Manager showed a distinct increase in CPU demend. In all cases we have tried to use no more than 80% cpu demand.

I can try scope and Freq Meter. However in the past its been very difficult to follow the pulse output trains as they vary from 0to max in 90deg rotation of the table.

Its getting a bit fustrating. I have had 3 months of wiring, setting up and changing the servo's and drives till we got sets that work. Solving this issue appears to be the last before we can change mode to production of some samples and move to a next phase.

Regards and appreciate all help.

Graham


9
General Mach Discussion / Re: hickup at 12 and 6 oclock
« on: April 19, 2007, 04:07:15 PM »
Hi
Thanks for replies,

To Brian, I have tried abs code same behaviour

To Graham, will try G61 later today. Thanks for idea

Regards

Graham

10
General Mach Discussion / Re: hickup at 12 and 6 oclock
« on: April 18, 2007, 05:27:05 PM »
Thanks for reply

Backlash and mechanical issues were checked and they are not a factor.

The look ahead was at default val (20 I think)  - I tried 2&5 and 100 as alternatives. No difference

Regards

Graham

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