
Title 90A3 / 90A7 / 90B3 / 90B7
Learning Control Operator’s Manual
03 ’05.01.13 K.Maeda 3
rd
. updated Draw No.
02 '03.01.06 K.Maeda 2
nd
. updated
A - 63639E - 070
01 ‘00.09.20 K.Maeda Newly designed Sheet 032
Edit Date Design Description
/ 081
the renewal of the compensation data only during the first period subsequent to Learning step
switching. This might have good result on such grinding application that have many and rapid
Learning step change.
Data range : 0 to 32767
Standard : 32767
Up to RPTCT counting, a period compensation data is renewed and then stop the renewal.
You can temporally disable Learning control with setting RPTCT to zero before G05. This is useful
because of no need to power off compared to the way of disabling SLEN (No.2008#0).
Data range : 15 to 32000 * 90A3 series is up to 16000.
You should set Command data period PRIOD corresponding to spindle rotation speed usually. Servo
software regards this as Learning period. You can set integer times of the command period to PRIOD.
Max. value is 32sec and correspond to 1.875 min
-1
of Min. spindle rotation speed.
(Example) When spindle speed is 60min-1, set to 1000 (msec) in case of No.2007#3 = 0.
In case of long PRIOD, Built in auto sampling algorithm samples a Learning data every 2 to N’th power for the
purpose of appropriate allocation of Learning memory preventing the memory overrun. This also concerns to
the accuracy. Refer to 7.2 Learning Memory expanding function.
In case of the multiple Learning period necessary, you use 2
nd
Learning , 3
rd
Learning, and etc. This function
assumes the cam grinding machine as the work is finished in the low speed changing the Learning period.
According to Fig.3-3-3 example, use this parameters.
2242
RPTCT 1
st
Learning count (Repetition count) [cycle]
2243
PRIOD 1
st
Learning period (Command period) [msec]
2235
RPTCT2 2
nd
Learning count (Repetition count) [cycle]
2236
PRIOD2 2
nd
Learning period (Command period) [msec]
2237
RPTCT3 3
rd
Learning count (Repetition count) [cycle]
2238
PRIOD3 3
rd
Learning period (Command period) [msec]
2239
RPTCT4 4
th
Learning count (Repetition count) [cycle]
2265
RPTCT5 5
th
Learning count (Repetition count) [cycle]
2266
PRIOD5 5
th
Learning period (Command period) [msec]
2240
PRIOD4 4
th
Learning period (Command period) [msec]
2232
STPRPT Step repetition count