Motor Hunting And Oscillation Control Parameters; Parameters That Affect Control Performance In Applications - YASKAWA V1000 Series Installation & Start-Up Manual

5.2 Motor Performance Fine Tuning
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Motor Hunting and Oscillation Control Parameters

In addition to the parameters discussed in
following parameters indirectly affect motor hunting and oscillation.
Table 5.3 Parameters that Affect Control Performance in Applications
Name (Parameter No.)
Dwell Function
(b6-01 through b6-04)
Accel/Decel Time
(C1-01 through C1-11)
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)
180
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 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.
YASKAWA ELECTRIC TOEP C710606 09B YASKAWA AC Drive V1000 Installation & Start-Up Manual
V/f Pattern Selection: E1-03 on page
Application
139, the