Parameters To Minimize Motor Hunting And Oscillation - YASKAWA A1000 Series Technical Manual

◆ Parameters to Minimize Motor Hunting and Oscillation

In addition to the parameters discussed on page
hunting and oscillation.
Table 6.7 Parameters that Affect Control Performance in Applications
Name (Parameter No.)
Dwell Function (b6-01 through b6-04)
Droop Function (b7-01, b7-02)
Accel/Decel Time (C1-01 through C1-11)
S-Curve Characteristics (C2-01 through C2-04)
Jump Frequency (d3-01 through d3-04)
Analog Filter Time Constant (H3-13)
Stall Prevention (L3-01 through L3-06, L3-11)
Torque Limits (L7-01 through L7-04, L7-06, L7-07)
Feed Forward Control (n5-01 through n5-03)
YASKAWA ELECTRIC SIEP C710616 27C YASKAWA AC Drive A1000 Technical Manual
296 through 298, the following parameters indirectly affect motor
Prevents motor speed loss by maintaining the output frequency when working with heavy loads or when there is powerful
backlash on the machine side.
Used to balance the load between two motors that drive the same load. Can be used when the control method (A1-02) is set to
3 or 7.
Adjusting accel and decel times will affect the torque presented to the motor during acceleration or deceleration.
Prevents shock at the beginning and end of acceleration and deceleration.
Skips over the resonant frequencies of connected machinery.
Prevents fluctuation in the analog input signal due to noise.
• Prevents motor speed loss and overvoltage. Used when the load is too heavy and also during sudden acceleration/
deceleration.
• Adjustment is not normally required because Stall Prevention is enabled as a default. Disable Stall Prevention during
deceleration (L3-04 = "0") when using a braking resistor.
• Sets the maximum torque for Open Loop Vector Control.
• Ensure that the drive capacity is greater than the motor capacity when increasing this setting. Be careful when reducing this
value because motor speed loss may occur with heavy loads.
Used to increase response for acceleration/deceleration or to reduce overshooting when there is low machine rigidity and the
gain of the speed controller (ASR) cannot be increased. The inertia ratio between the load and motor and the acceleration time
of the motor running alone must be set.
6.2 Motor Performance Fine-Tuning
Application
6
299