YASKAWA L1000E - Page 94

4 Start-Up Programming
94 YASK AWA TOEPYAIL1E01A YASKAWA AC Drive L1000E Quick Start Guide
■ 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