Speed Control - MID 7604 - DAQ E-Series

[ing.newcastle]

Dear Forum

I need to realize the speed regulation of a trolley using a linear rail connected to a stepper motor. I would like to regulate the velocity by means of an analog input produced in my E6052 daq. I can produce a digital pulse train as well.

The stepper motor will be drived by a MID-7604. My question is: "can I connect a traditional E daq card (being able to generate the control signal) to a MID-7604 (being able to drive the stepper motor)?"

Hoping for an answer to my question...

Thank you

Best regards

Moreno

[Jochen]

Moreno,

the answer is short and simple: No.
E-Series devices don't provide motion control features like trapezoidal velocity profiles (acceleration and deceleration ramps), following error tracking, monitoring of limit switches and so on. Additionally E-Series devices are not pin-compatible with the MID-7604.

Controlling stepper motors is very straight forward with NI motion control devices like the PCI-7334 (4 axis stepper controller). PCI-73xx products are designed to work perfectly with the MID-7604.

I hope this helps,

Jochen Klier
National Instruments

[ing.newcastle]

Thank you for reply

One of my collegue in another department can lend my a PXI-7334. If I'm not wrong is the external version of the suggested PCI-7334.

Now, my worry is: " Using a PXI-7334, must I change drammatically the software developed in LabView for the traditional daq card?

Sorry for my inexperience...

Thanks

Bye bye

Moreno

[Jochen]

The PXI-7334 is based on the PXI standard. You will need a PXI chassis and PXI controller in order to be able to use this device.

The 7334 is a motion control device and is programmed with the NI-Motion API. In fact this is much easier than abusing a DAQ board and the NI-DAQ for motion control tasks.

The NI-Motion API in LabVIEW is very easy to use, as a lot of functionality is done by the motion board itself (trajectory and step generation, limit switch and following error tracking,...). A one axis-move with position monitor and user selectable values for target position, velocity, acceleration and deceleration looks as simple as that:



Jochen

[richardd]

 Hi,
  I was wondering around this forum and my problem is next: At school at need to do a project, the projects theme is motion control, for this my teacher put the next things to my disposition: PC, PCI 7334 controller, MID-7604 Drive and a stepper motor. I have to say that i am a little new to this labview and motion control thing but i would like to learn it.
 I managed to wire the stepper motor and MID 7604  Drive, try them out with NI-Motion, so i could say that the motor is moving 😉
 I would like to make  a more complex project and i thought that i will use Labview and make a Vi that controls acceleration and deceleration and put another things in it. The problem is that i am realy newbie to labview and I wanted to ask for a little help: i saw Jochen's print screen and if You could post the Vi so i can try it with my components, learn the basics and priciples...i would be very greatfull for link or tutorials.. because i  don't know were to look for.

Thanks,

 Arthur