some questions about configuration in MAX.

[leq_82]

I am very sorry I misspelled,it's not fell but feel.

[Jochen]

I just want to make sure that we are on the same page. Is your last posting related to a real stepper motor? In your first postings you have talked about these devices: SANYO DENKI,drive type is RS1A01AA,motor type is R2AA06020FXP00 but now you are talking about a different motor type. Is this correct?

The behavior that you describe is typical for stepper motors. There are several factors that limit the motor velocity:

1. Load: The more load the motor has to carry, the higher the torque during accel/decel. If you lower the accel/decel values you should be able to reach higher velocities but of course there are also physical limits here.
2. Friction: This is similar to load but the effects of lowering the accel/decel values may not be as significant.
3. Motor current limit: Higher motor currents result in higher torque and allows higher accel/decel values. Please check your drive's manual to find out if you can increase the motor current limit (e. g. by changing some dip switch settings). Please be careful with that as you shouldn't exceed your motor's current ratings.

If these hints don't help to increase the velocity, you may have simply reached the physical velocity limit of your motor/mechanics.

Jochen

[leq_82]

Hi,Jochen

I am very sorry to bother you again!I have another problem now and I need your help.

I use NI  PCI-7344,UMI-7764 and servo motor in my project.Now I meet a problem about limit switch----That's PCI 7344 can't detect the limit

switch's status if I set the motor's velocity a little faster(for example,1500RPM).It's very dangerous,my compents are allways hit.If I set the

motor's velocity at 500RPM or 1000RPM,this situation won't happen.

After I diable the Limit Filter in MAX,this situation still happened.My limit switch is producted by OMRON,their type is EE-SX671,they are photomicrosensor.their parameter as follow:Sensing distance(slot width):5mm.Response frequency*2:1KHZ min.(3KHZ average).After I

change the photomicrosensor to mechanical switch,the problem still occur.

I am very vexatious,Where is the problem?The Response frequency is not enough?How can I resolve the problem?Could you help me?

Thank you in advance!

B&R

EnquanLi

[Rahul Varanasi]

hey leq_82..

i'm using the same stepper motor in my project too. but the problem is i am not able to find out which wire is for which pole. can you please help me?  the pole configuration is all i need to finish my project.

[AnalogKid2DigitalMan]

Try this to determine your phase wiring:

https://knowledge.ni.com/KnowledgeArticleDetails?id=kA03q000000YI7XCAW&l=en-US

-AK2DM