Motion Control Problem

Hello everyone,
Firstly I would like to thank you all for your help in advance.
Ok, so I am operating two stepper motors through the use of Labview/MAX
(I switched to MAX just to be able to operate the stepper
motors). My setup is a UMI 7764 controller and a 2035 step motor
driver. I ran a search in this forum and was able to find some
helpful hints on how to target the problem. As such I brought in
an oscilloscope to test if steps were being sent.
While attempting to run the motors in MAX I checked to see if any steps
were being sent between the controller and motor driver. The
steps are being sent fine and everything seems to be ok at this
location.
When the scope is connected between the motor driver and the actual
stepper motor, steps are constantly being sent whether max is being
operated or not, which agrees with the fact that the motors cannot be
moved by hand even when I kill it in MAX. So I guess my question
is does anyone have any ideas on what could possibly be wrong with
this? My thoughts are that the motor drivers are shot, although I
am a grad student who just started working with this setup 2 weeks ago,
so my knowledge of the entire setup is still fairly limited. Any
help would be greatly appreciated.
Regards,
Keith Peterson

Hey Keith,
I went and checked out the web page for the 2035 stepper motor drive, and by reading the description I saw the following:
"The drive also includes an automatic feature to lower motor current by 50% anytime the motor is left at rest for more than one second. This feature can be disabled."
So this might be the cause of the constant current being sent to the motor. You can try disabling this feature and see if that helps. This is just one thing that you can check on in the 2035 motor drive user manual. There are probably other features that you can select for this drive as well, but I am not too familiar with this specific drive. Check out the user manual, and see if you can change some settings on it to allow the motion controller to control what gets sent out to the motor.
Another thing you can check on is if all the wiring is set up correctly. One thing specifically you can check on is if you have the Inhibit Out wired up from the UMI 7764 to the 2035. When you click on the kill operation in MAX, the drive should also be inhibited, so maybe you don't have something wired up properly. Does the 2035 drive expect an input signal to cause it to no longer output current? Last, maybe you can contact Applied Motion Products to see if they can help you in any way.
I hope this helps. Please let me know if you have any questions about what I mentioned above. Thanks, and have a great day.
Regards,
DJ L.

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I don't log in here very often, so if you have any questions, feel free to email me at cgonzalezat*sfchronicle*dotcom
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HI All,
I am facing a problem in Motion Controller.
We are using PCI 7344 and UMI 7774.
Now their is a connector on the Motion control card for Digital I/O.
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Regards
Manish Karnik
Cruiser Controls
Mumbai.

Manish,
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Best regards,
Jochen Klier
National Instruments Germany
Message Edited by Jochen on 07-05-2006 01:34 PM
Attachments:
PWM table.jpg ‏233 KB

Can't turn off motion control

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anderslq wrote:
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Is it possible to condition a load cell signal with a 1520 SCXI and then use it as the primary analog feedback for a 735X motion control board?

My system
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1520 SCXI
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Ph.D Candidate
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>create your own external circuitry to amplify the signal.>
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PCMCIA card for motion control

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Attachments:
joy_first.vi ‏56 KB
joy_2.vi ‏42 KB

Hi Mar-Q,
i think the direction results from the direction you press the joystick key, and the power depend on how strong you press the key (if it is possible), if not you can measure the time how long the key is already pressed and depending on that you calcualte the power.
Mike

3_Axis Motion Control

I need to enter target positions in degrees.I am using PCI 7433 Motion controller
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Thanks and regards.
Sunil

We use http://www.jrkerr.com/index.html motor control system. This uses
low cost Pics and a serial network. The drivers are a DLL and can be
called from LabVIEW. I have built multi axis devices and it has worked
real reliable. (No problems).
A company called Compu-Motion has experience building low cost hardware and
software for mult-axis devices. Compu-Motion web site is
www.compu-motion.com. Compu-Motion could help you build the hardware or
software.
John Harmon
330-848-0460
----- Original Message -----
From: Dow Airen
Newsgroups: comp.lang.labview
Sent: Wednesday, November 24, 1999 12:33 AM
Subject: 3 axis motion control- where do I start?
>
> I have to develop a hearing aid hybrid test system which will test an
array
>
> o
f hybrids. I already have the individual hybrid test code but need some
>
> guidance with the motion control. Does anybody have any good references
>
> for me on what aspects should be considered. All I really want to do is
> step
> and test but don't know much about motor types stepper/servo etc, limits,
> calibration etc. Any tips would be greatly appreciated.
>
> Regards,
>
> Dow Airen
> Design Engineer
> Crystalaid Microelectronics P/L

3 axis motion control- where do I start?

I have to develop a hearing aid hybrid test system which will test an array
of hybrids. I already have the individual hybrid test code but need some
guidance with the motion control. Does anybody have any good references
for me on what aspects should be considered. All I really want to do is
step
and test but don't know much about motor types stepper/servo etc, limits,
calibration etc. Any tips would be greatly appreciated.
Regards,
Dow Airen
Design Engineer
Crystalaid Microelectronics P/L

We use http://www.jrkerr.com/index.html motor control system. This uses
low cost Pics and a serial network. The drivers are a DLL and can be
called from LabVIEW. I have built multi axis devices and it has worked
real reliable. (No problems).
A company called Compu-Motion has experience building low cost hardware and
software for mult-axis devices. Compu-Motion web site is
www.compu-motion.com. Compu-Motion could help you build the hardware or
software.
John Harmon
330-848-0460
----- Original Message -----
From: Dow Airen
Newsgroups: comp.lang.labview
Sent: Wednesday, November 24, 1999 12:33 AM
Subject: 3 axis motion control- where do I start?
>
> I have to develop a hearing aid hybrid test system which will test an
array
>
> o
f hybrids. I already have the individual hybrid test code but need some
>
> guidance with the motion control. Does anybody have any good references
>
> for me on what aspects should be considered. All I really want to do is
> step
> and test but don't know much about motor types stepper/servo etc, limits,
> calibration etc. Any tips would be greatly appreciated.
>
> Regards,
>
> Dow Airen
> Design Engineer
> Crystalaid Microelectronics P/L

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I am wondering where the problem is? Is it initialization problem? I did initialize before I configure buffer.
Thanks in advance

I would recommend trying one of our shipping examples for contouring. Which programming language are you using?

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