
B-65280EN/05 FANUC AC SPINDLE MOTOR αi series 2.EXPLANATION OF OPERATION MODES
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15i 16i 30i
3091 4091 4091
Position gain change ratio at reference position return time on servo mode
Unit of data : 1%
Valid data range : 0 to 100
Standard setting value : 100
This parameter sets a position gain change ratio at reference position
return time on servo mode (rigid tapping, spindle positioning, and so
forth).
NOTE
An overshoot can occur at reference position return
time for a cause such as an excessively high
reference position return speed and an excessively
large spindle inertia. In this case, an overshoot can
be avoided by setting a small value in this
parameter.
15i 16i 30i
3099 4099 4099
Delay time for stable motor excitation
Unit of data : 1ms
Valid data range : 0 to 32767
Standard setting value : 0
This parameter sets a period of time required until motor excitation
becomes stable on rigid tapping or Cs contouring control.
NOTE
In switching from the velocity control mode to rigid
tapping mode, the stop time excessive error alarm
can be issued intermittently.
This is because the excitation state of the spindle
motor changes abruptly, and therefore a transient
state occurs in the motor, thus moving the motor
shaft slightly.
In such a case, set this parameter. In general, set a
value from about 300 to 400 (300 to 400 msec).