Parameters To Minimize Motor Hunting And Oscillation - YASKAWA E1000 Technical Manual

Problem
Stalling or STO occurs at high speed as
the output voltage becomes saturated.

◆ Parameters to Minimize Motor Hunting and Oscillation

In addition to the parameters discussed on page 258, the following parameters indirectly affect motor hunting and
oscillation.
Table 6.3 Parameters that Affect Control Performance in Applications
Name (Parameter No.)
Dwell Function (b6-01 through b6-04)
Accel/Decel Time (C1-01 through C1-04)
S-Curve Characteristics (C2-01 and C2-02)
Jump Frequency (d3-01 through d3-04)
Analog Filter Time Constant (H3-13)
Stall Prevention (L3-01 through L3-06, L3-11)
YASKAWA ELECTRIC SIEP C710616 35D YASKAWA AC Drive E1000 Technical Manual
Parameter No.
Output Voltage Limit (n8-62) Set the value of the input voltage to parameter n8-62
Prevents motor speed loss by maintaining the output frequency when working with heavy loads or when there is powerful
backlash on the machine side.
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.
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 option.
6.2 Motor Performance Fine-Tuning
Corrective Action
Application
Suggested
Default
Setting
200 Vac or 400 Set equal to input
Vac voltage
6
259