Need Help! FANUC 21i Serial Spindle RPM - CNCzone.com-The Largest Machinist Community on the net!

wahidbashir · #1 07-13-2011, 11:08 AM

Frndz,
I have a turning machine with FANUC 21i with serial spindle A06B-6112-H006.
Its commanded speed and actual displayed speed always differ by 20%.
measured speed is greater.
Is there any way to calibrate it by using spindle parameters.

underthetire · #2 07-13-2011, 11:46 AM

Are you even supposed to have A 21i control over there? Just askin...

wahidbashir · #3 07-14-2011, 08:31 AM

Just supposed it may be 18iT. If u have any idea then write it

Jim Green · #4 07-14-2011, 09:31 AM

Is the speed off by the same amount in reverse rotation?

wahidbashir · #5 07-14-2011, 10:05 AM

Yes Dear,
With same results.
By the way what would you suggest if it is different on reverse

Lewertek · #6 09-23-2011, 11:59 AM

I do not recall exactly which parameter, but it is related to either the maximum spindle speed ,(3741 or 3772) or maximum motor speed(4020) (I would try 4020 first), if I recall correctly. Record the original values before changing anything! You should be able to get it set within a few RPM of the programmed speed by trial and error.
Hope this helps a few people out there.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Need Help!- fanuc 21it serial spindle	bennyboy78	Fanuc	0	07-01-2010 10:49 AM
Problem- spindle serial link error 750 Fanuc 21i-MB	Abdul Haq	Fanuc	0	05-13-2008 05:59 AM
Need Help!- spindle serial link error 750 Fanuc 21i	Abdul Haq	Fanuc	0	05-13-2008 01:48 AM
help!: spindle serial link error	emonje	Fanuc	1	05-08-2008 10:07 PM
How to setting fanuc serial spindle parameter?	ning	Fanuc	1	10-30-2005 02:38 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)