Title 90D3 / 90E3
Learning Control Operator’s Manual
A - 63639E – 108
01 ’05.04.20 N.Sonoda Newly designed Sheet 036
Edit Date Design Description / 064
7. Functions detail
7.1 Learning Memory expanded function
Learning Memory expanded function allows the application to take advantage of many profiles up to Max.
Profile number and many learning steps up to Max. Learning step number as the following table. (Option)
7.1.1 Parameter explanation
LEBFEX Learning Memory expanded function is
1 : Available (New spec.)
0 : Not available (Old spec.)
(Note) Learning Memory expanded function also requires NC option besides.
Data range : 1 to 16 (New spec.) Old spec is 0.
♦ In case of Cam grinding, total profile number for one camshaft is set before processing.
Data range : 1 to PRFALL (New spec.) Old spec. is 0 to 5.
♦ Set the Profile number at the entry of G05 cutting the next profile, if you want to change the profile.
♦ When PRFNO = 0, you can’t use the second and after Learning period and repeat number. Only PRIOD
and RPTCT of the first Learning parameter are available.
When the following parameter No.2537 isn’t equal to zero, Learning period is expressed as the product of
No.2537 and No.2517. In this case, Learning steps from second step are unavailable.
Data range : 0 to 32767 (If 0, it regards as 1)
Example : If you want to set whole process 64sec as Learning period, the setting is as follows.
No.2517 = 6,400, No.2537 =10
Actual Learning period = 6,400 * 10 = 64,000msec
Note : These parameters enable to set over 32sec as Learning period. But according to the formula from
“7.1.3 Cautions”, there is some possibility that the accuracy getting worse because of rough
sampling. In this case, it is necessary to reduce the total profile number.
Max. Profile number Max. Learning Step number
Standard spec. 5 2
Expanded spec. 24 5
PRFALL Total Profile number
PRFNO Profile number
EXPRIOD Expansion coefficient of Learning period
Learning period (msec)