Dynomotion

Group: DynoMotion Message: 8394 From: eric_kato_sanders Date: 9/25/2013
Subject: Taming down the rapid traverse speeds
Hi Tom,
I finally got a chance to hook my kflop up to my NM-145 mill and have all three axis moving.  I used the same steps per inch (4064) that I had in Mach.
In my init.c file, I have my max velocity set to 4064*200, and accel at 4064*15, jerk is at 2E6.
In my trajectory planner screen, I have my cnts/inch set to 4964, Velocity 200, and accel at 15.  My Jog speeds I had at 25 and 25%.
When I click the far arrow button to rapid, the table is trying to move at 300in/sec. according to the display in KmotionCNC. The table starts moving off and then stalls with a high pitch whine.  Perhaps I'm not understanding how these numbers work.  Do you see anything out of line that would cause this?
Eric

The only way I can tame it down is to set my jog speed to a very low number like 5.
Group: DynoMotion Message: 8395 From: Tom Kerekes Date: 9/25/2013
Subject: Re: Taming down the rapid traverse speeds
Hi Eric,

The Settings in KFLOP are all in units of Steps and Seconds as shown on the screen.

The Settings in KMotionCNC Trajectory Planner are all in units of inches and seconds as shown on the screen.

Not minutes.  So to convert your velocity numbers from Mach3 (which are in inches/minute) by 60.

The Mach3 Acceleration numbers are already in units of seconds.

I assume the 4964 number you typed was a typo.

Regards
TK

Group: DynoMotion Message: 8396 From: eric_kato_sanders Date: 9/26/2013
Subject: Re: Taming down the rapid traverse speeds

Sheesh, I knew it had to be something stupid on my part.

Thanks.

Eric



---In DynoMotion@yahoogroups.com, <dynomotion@yahoogroups.com> wrote:

Hi Eric,

The Settings in KFLOP are all in units of Steps and Seconds as shown on the screen.

The Settings in KMotionCNC Trajectory Planner are all in units of inches and seconds as shown on the screen.

Not minutes.  So to convert your velocity numbers from Mach3 (which are in inches/minute) by 60.

The Mach3 Acceleration numbers are already in units of seconds.

I assume the 4964 number you typed was a typo.

Regards
TK

Group: DynoMotion Message: 8397 From: Tom Kerekes Date: 9/26/2013
Subject: Re: Taming down the rapid traverse speeds
It messes me up all the time also.

TK