Pa4_60 Cogging Torque Compensation; Pa4_61 To 63 Tuningless Function Settings - Fuji Electric Alpha7 VV User Manual

CHAPTER 4 PARAMETER

PA4_60 Cogging torque compensation

No.
Cogging torque
60
compensation
Speed fluctuations resulting from servomotor cogging torque can be suppressed.
Use this parameter if wishing to suppress speed fluctuations during operation.
This function can be used by setting the parameter to 2 (learning), rotating the servomotor 10 times or
4
more, and after the servo amplifier has learned the cogging torque (the parameter is automatically set
to 1: Enable when learning is complete.)
To reset the learned result, set to 3 (clear learning result) (the parameter is automatically set to 0:
Disable when the result is cleared.)
 Run the servomotor under the following operating conditions when performing
 If learning is not completed, it will not be possible to set this parameter to 1: Enable. A
 The cogging torque differs for each motor. Perform teaching again when a motor is
 There may be no effect, even when using this function, for such reasons as the

PA4_61 to 63 Tuningless function settings

No.
Tuningless function
61
Enable/disable
62 Tuningless level
63 Tuningless load level
Set these parameters when using the tuningless function.
Refer to "5.2 Tuningless Function" for details on settings and adjustment, etc.
4-124
Extension Function 2 Setting Parameters
Name
0: Disable
1: Enable
2: Learning
3: Clear learning result
learning.
If the following conditions are not satisfied, it may not be possible to perform learning
correctly.
(1) Run the servomotor on its own before installing it on the machine.
(2) When performing learning, run the servomotor at a constant rotation speed of
approximately 100 [r/min].
data error will occur when an attempt is made to set the parameter.
replaced.
cogging torque being too low. If no effect is observed, set this function to "0: Disable".
Name
Setting range
Setting range
0: Disable 1: Enable
0 to 7
0 to 3
Default
Change
value
0 Always
Default
Change
value
Power
0
supply
4 Always
3 Always