
9.SPINDLE FUNCTION B-63783EN-1/01
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Position control loop gain switching and serial spindle parameters
In rigid tapping, the position gain for the tapping axis is changed
according to the position gain for the spindle so that the position gains
for position control of the spindle and tapping axis match.
Set the position gains in parameter Nos. 5960 and 5961 to 5975 for an
analog spindle, or in parameter Nos. 3065 to 3068 for a serial spindle.
Analog spindle
GS4s GS2s GS1s Gear selected Parameter No. to be
used
0 0 0 Step 1 5961
0 0 1 Step 2 5963
0 1 0 Step 3 5965
0 1 1 Step 4 5967
1 0 0 Step 5 5969
1 0 1 Step 6 5971
1 1 0 Step 7 5973
1 1 1 Step 8 5975
5960
Serial spindle
CTH1s CTH2s Gear selected Parameter No. to be
used
0 0 Step 1 (High) 3065
0 1 Step 2 (Medium High) 3066
3044 3052
1 0 Step 3 (Medium Low) 3067
1 1 Step 4 (Low) 3068
3045 3053
There is a difference in the change processing between an analog
spindle and serial spindle, as explained below.
- When an analog spindle is used, the position gains for the spindle
and tapping axis are changed according to the parameter settings
and gear select signal.
- When a serial spindle is used, the position gain for the tapping
axis is changed according to the parameter settings and
clutch/gear select signal.
When rigid tapping is performed using a serial spindle, position gain
setting must be made for position control of the spindle in the
parameters of the serial spindle.
The following are the major serial spindle parameters that must be set
or adjusted when using a serial spindle:
For details of the serial spindle parameters, refer to the "FANUC AC
SPINDLE MOTOR αi series DESCRIPTIONS (B-65272EN) or
FANUC AC SPINDLE MOTOR αi series PARAMETER MANUAL
(B-65280EN).