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Offline Hood

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Re: step error
« Reply #10 on: April 16, 2009, 05:10:34 AM »
Your motors are tuned too fast for the Kernel of 25KHz, either decrease the motor velocity or increase the Kernel speed to 35KHz.
Hood
Re: step error
« Reply #11 on: April 16, 2009, 05:25:03 AM »
i already did but the program give an error on of your motor axises is tunned to fast for the kernel speed so i increase kernel gradualy but i still have the same problem by the end i made kernel speed 1mhz i have all other xml files for yesterday i'll attach it
Re: step error
« Reply #12 on: April 16, 2009, 05:31:10 AM »
also that's other files

Offline Hood

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Re: step error
« Reply #13 on: April 16, 2009, 06:33:00 AM »
Ok well nothing jumps out as being seriously wrong in your xml. Your Steps per unit seem a bit low but that will depend on your setup etc so could be correct.
 You definitely do not want to use a kernel speed that you do not require so dont go above 35KHz unless you need more due to the steps per/velocity you need.
 Have you run the DriverTest to see if you are getting a decent pulse?
 What kind of motors, drive, reduction, ballscrews etc do you have?
Hood
Re: step error
« Reply #14 on: April 16, 2009, 07:20:08 AM »
the motor is induction motor 1.1 kw with encoder 800 p/rev and the driver is omron f7 and the reduction is gearbox 1:40 then a reduction 2 gears 1:1.5 so that's mean the total reduction gear is  1:65  then i use a pinion and rack with pitch 6.2 mm

Offline Hood

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Re: step error
« Reply #15 on: April 16, 2009, 07:57:37 AM »
With that setup the tuning will be extremely critical and even when perfect I very much doubt that you will have the accuracies required for a machine tool. I am at present downloading the manual but at first look it seems to be more use for prositional control where great accuracy is not required.
Hood
Re: step error
« Reply #16 on: April 16, 2009, 09:15:46 AM »
dear hood
with this inverter  (drive) i can use induction motor ac servo motor with high accuracy u can download manual from this link
http://industrial.omron.eu/en/products/catalogue/motion_and_drives/frequency_inverters/lifts_and_cranes/f7/default.html#productinfo13_1

Offline Hood

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Re: step error
« Reply #17 on: April 16, 2009, 09:28:43 AM »
I have downloaded the manual and from first impressions it is suitable for such things as palletisers, lifts, cranes etc which although may require accuracy it is not the same accuracy that a machine tool requires. I will read further tonight but I think you are trying to use something that is not suitable for the application you have.
Hood
Re: step error
« Reply #18 on: April 16, 2009, 10:16:11 AM »
u r right if i use it as fvd without pg-b2 option card but with this card it work like a servo and with more power than stepper or servo

Offline Hood

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Re: step error
« Reply #19 on: April 16, 2009, 03:59:26 PM »
That seems to me to be a speed control card so it will control the speed via closed loop but dont think it will control position as well.
Hood