Title 90D3 / 90E3
Learning Control Operator’s Manual
A - 63639E - 108
01 ‘05.04.20 N.Sonoda Newly designed Sheet 035
Edit Date Design Description
6.3 Adaptive method
The feed-forward coefficients of the Adaptive preview control are decided with the following procedure.
A-1 Validate the Adaptive preview control and the Adaptive mode.
( No.2019#5 = 1 and No.2442#1 =1 )
A-2 Set the parameter of the adaptation coefficient to standard setting.
(No.2543 =100 )
Set the feed-forward coefficients to all 0. ( No.2544 - 2549 = all 0 )
And Learning control is invalid automatically during adaptation.
As soon as the error begins divergence, stop G05 by reset key on MDI to protect the machine from
A-3 Operate the machine about several ten times of the learning cycle with a practical part program including
A-4 Check the position error with Servo guide or the servo tuning display.
A-5 Step up adaptation coefficient (No.2543) every about 50.
Check Convergence of the position error by using the possible biggest coefficient as far as the error
A-6 Invalidate the adaptive mode. (No.2442#1 = 0)
The feed-forward coefficients decided by the adaptive mode are not transported from servo to CNC on
A-7 To transmit the feed-forward coefficients to NC nonvolatile memory No.2544-49, set No.2442#2 = 1.
A-8 If the feed-forward coefficients change from initial value to another one, the transportation to CNC
parameter has finished.
A-9 Set No.2442#2 = 0.
Finish with adaptive process.
These processes can decide the feed-forward coefficients. Make sure No.2443#1 and #2 to be 0.