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Author Topic: Servo Tuning help Please  (Read 932 times)

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Servo Tuning help Please
« on: April 01, 2015, 02:48:57 AM »
Hi

I am trying to tune one servo
Motor is directly coupled with screw.  2 revolution of motor will make 5 mm movement

Servo motor has techo connected. There is no cpr written. Only 20mVrpm written on name plate

What should i feed to tunning page?

I kept mach steps 140 after lot of trials. Now if i give command from mdi to move 550 mm, my physical movement is around 554/557/555 - varying random and that too in both directions

Please suggest what to do now
Re: Servo Tuning help Please
« Reply #1 on: April 04, 2015, 03:56:48 AM »
Ok i know now what the problem is

My drive needs run command plus reference. Mach gives reference but not start command so i tried using brain and used output which will be high when feedrate is >0

Now my question is - how should I give run command to drive? I think its not safe that i always give run with no reference and control drive with reference only. M stuck here. Please help me