
B-65280EN/05 FANUC AC SPINDLE MOTOR αi series 2.EXPLANATION OF OPERATION MODES
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16i 30i
4346 4346
Incomplete integration coefficient
Unit of data :
Valid data range : 0 to 32767
Standard setting : 0
Set this parameter to use incomplete integration for velocity loop
integration control.
NOTE
Usually, this parameter need not be adjusted.
16i 30i
4515 4515
Excessive speed deviation alarm detection level on spindle synchronous
control
Unit of data : 1min
-1
(10min
-1
when bit 2 (SPDUNT) of parameter No. 4006 is set to
1)
Valid data range : 0 to 32767
Standard setting : 0
This parameter sets a level for detecting the excessive speed deviation
alarm under spindle synchronous control.
If the positional deviation (position error) or the difference between
the speed command for the spindle end calculated from the position
gain and the actual spindle speed exceeds the value set in this
parameter in the spindle synchronous control mode, the excessive
speed deviation alarm under spindle synchronous control (SPM alarm
C8) is detected. When this parameter is set to 0, alarm detection is
disabled.
If the speed integration control signal (INTG) is used, the speed
deviation increases for a cause such as acceleration/deceleration and
cutting load. The spindle speed deviation that causes torque command
saturation is indicated below. Set an alarm level by using a calculated
value as a guideline. (During spindle synchronous control, ensure that
torque command saturation does not take place.)
Spindle speed deviation [min
-1
] = 1024 × A / P × B / G
where
No.4006#1 No.4009#0 A B
0 0 1 100
0 1 16 100
1 0 1 1000
1 1 16 1000
P: Velocity loop proportional gain on spindle synchronous
control (No.4044, 4045)
G: Gear ratip (No.4056 to 4059)