Yaskawa CIMR-LU Drives User Manual
Page 97
4 Start-Up Programming & Operation
YASKAWA ELECTRIC TOEP C710616 38F YASKAWA AC Drive L1000A Quick Start Guide
97
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S3-35: Anti-Rollback Torque Bias 2
Sets a maximum value for the torque bias used for Anti-Rollback when Position Lock at start is performed. This setting
rarely needs to be changed.
■
S3-37: Position Deviation Level to Apply Anti-Rollback Torque Bias 1
Sets the position deviation level to activate at Anti-Rollback Torque Bias 1 (S3-34). This setting rarely needs to be
changed.
■
S3-38: Position Deviation Level to Apply Anti-Rollback Torque Bias 2
Determines the position deviation level when the drive should switch from the Anti-Rollback torque bias set in S3-34 to
the torque bias set in S3-35. This setting rarely needs to be changed.
■
S3-39: Anti-Rollback Integral Gain
Determines the drive responsiveness for Anti-Rollback during Position Lock.
Increasing the value set to S3-39 may help if there is still too much deviation from the Position Lock start position after
Position Lock gain 1 and gain 2 have already been adjusted. Lower S3-39 if oscillation occurs. This parameter rarely
needs to be changed.
■
S3-40: Anti-Rollback Movement Detection
Sets the amount of speed feedback signal pulses to detect a movement of the rotor.
■
S3-41: Position Lock Gain at Start 2 Reduction
Sets a reduction factor for the Position Lock Gain at Start 2 (Anti Rollback Gain) set in parameter S3-02.
If the motor rotation (i.e., car movement) is below the movement detection level set to S3-40, the drive will reduce the
Anti-Rollback gain according to the gain reduction level set in S3-41.
No.
Parameter Name
Setting Range
Default
S3-35
Anti-Rollback Torque Bias 2
0.0 to 100.0%
0.0%
No.
Parameter Name
Setting Range
Default
S3-37
Position Deviation Level to Apply Anti-Rollback Torque Bias 1
0 to 32767
0
No.
Parameter Name
Setting Range
Default
S3-38
Position Deviation Level to Apply Anti-Rollback Torque Bias 2
0 to 32767
0
No.
Parameter Name
Setting Range
Default
S3-39
Anti-Rollback Integral Gain
-30.00 to 30.00
0.00
No.
Parameter Name
Setting Range
Default
S3-40
Anti-Rollback Movement Detection
0 to 100 pulses
1 pulse
No.
Parameter Name
Setting Range
Default
S3-41
Position Lock Gain at Start 2 Reduction
0.00 to 1.00
0.50
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