6.2 Motor Performance Fine-Tuning
YASKAWA ELECTRIC SIEP C710616 35D YASKAWA AC Drive E1000 Technical Manual 259
◆ 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
Stalling or STO occurs at high speed as
the output voltage becomes saturated.
Output Voltage Limit (n8-62) Set the value of the input voltage to parameter n8-62
200 Vac or 400
Va c
Set equal to input
voltage
Name (Parameter No.) Application
Dwell Function (b6-01 through b6-04)
Prevents motor speed loss by maintaining the output frequency when working with heavy loads or when there is powerful
backlash on the machine side.
Accel/Decel Time (C1-01 through C1-04) Adjusting accel and decel times will affect the torque presented to the motor during acceleration or deceleration.
S-Curve Characteristics (C2-01 and C2-02) Prevents shock at the beginning and end of acceleration.
Jump Frequency (d3-01 through d3-04) Skips over the resonant frequencies of connected machinery.
Analog Filter Time Constant (H3-13) Prevents fluctuation in the analog input signal due to noise.
Stall Prevention (L3-01 through L3-06, L3-11)
• 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.
Problem Parameter No. Corrective Action Default
Suggested
Setting
SIEP_C710616_35.book 259 ページ ２０１５年１１月３０日 月曜日 午後２時２分
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