Re : Motor with Epos Labview

[Encoder in LAbview]

Dear Sir/Madam

I simply want to controll the position of motor with Epos 24/5 using with labview and I am using RS232 communication and made a .vi but gives no response, I am going to attach .vi please have look and let me know what is wrong. Even motor is not runing atleast help me run DC motor.

Regards.

Hussain

[JB]

Have you first configured and tested the system with maxon's Epos Studio ? Unless you do the whole configuration in the LV code (which is currently not the case), you have to make it with Epos Studio --> motor and encoder specifications, gains of PI(D) regulators...

You should only start coding with LV once you were able to run the motor as expected with Epos Studio.

[Encoder in LAbview]

Dear Sir,

Thank you for your quick response I did use EPOS studio to run the motor it is working perfect. I run the motor at different speeds in velocity mode like 10 rpm to 60 rpm. But I want to controll the motor and epos with labview and I wrote a programe and when I run it Epos does not react. Actually I want to run the motor with Labview because latter on I can do some anlysis in Labview like Frequency Response (Bode plot etc). Also can check other parameters.

Regards

T.Hussain

[JB]

OK, this is a good starting point.

1. Enable the driver by the use of VCS Set Enable State.vi from maxon's library before entering the while loop. The motor should now move.
2. Unless you really want to continuously send the same position command to the driver, modify the code in the loop. Put VCS Set Position Profile.vi and VCS Move To Position.vi in a True/False case structure to execute them only on demand. For example when an additionnal "Send" button is pressed or when "Target Position" changes. If it is available in your LV version, I recommend the usage of an Event Structure.

[Squal]

Hi,

I've a problem with Epos Motor because i would to know the position in degrees and i don't know how i could do it. When i use the block "Get Position Is", it gives me a position value that increases with engine speed but i can´t determine the value for a revolution. I've tried to calculate this value of positionIs manually but...

The motor has 500qc. I don´t know if using some block like "Home Position", "marker"....

Some idea?

Regards 

[Hossein128]

Hello,

Do you still have that problem or could you solve that?

I hope hear it from you.

Best regards,

[Hossein128]

Hello,

After several days you didn't feedback yet and I think that your peoblem is solved by now.

If you have another questions we will hear them from you.

Best regards,

Hossein

[Robert_P]

I'm about to start trying to control an EPOS 70/10 motor controller using Labview.  I've seen various references to the Maxon Library of Labview .vi files (such as VCS Set Enable State.vi referenced in your reply) - please can you tell me where I can access / download these files?

Thank you.

Robert_P

[rolfk]

You get this library from Maxon themselves. It should be even on the CD that you receive with the Maxon Epos Studio, but I'm sure you can download it from their site with a little google. The first hit when googling Maxon LabVIEW library is actually this one: http://digital.ni.com/public.nsf/allkb/F2F553B7B2E3FC10862572AC0023FCA0

[Robert_P]

Rolf,

Thanks very much for your reply.  I now seem to have access to the EPOS .vi files: just need to join them all together now in my system controller programme!

Sincerely,

Robert_P