|
No.
(Hex.)
|
Name
|
Description
|
Default
(Range)
|
|
L3-24
(046E)
Expert
|
Motor Accel Time @ Rated Torque
|
        
Sets the motor acceleration time to reach the maximum frequency at the motor rated torque for stopped single-drive motors.
|
Determined by o2-04, C6-01, E2-11, and E5-01
(0.001 - 10.000 s)
|
Set one of these parameters to enable L3-20:
-
L2-29 = 1 [Kinetic Energy Backup Method = Single Drive KEB Ride-Thru 2]
-
L3-04 = 2 [Stall Prevention during Decel = Intelligent (Ignore Decel Ramp)]
-
L3-11 = 1 [Overvoltage Suppression Select = Enabled]
-
H1-xx = 7A or 7B [MFDI Function Selection = KEB Ride-Thru 2 Activate (N.O./N.C.)]
Note:
When Auto-Tuning changes the value of E2-11 [Motor Rated Power], the drive will automatically set L3-24 to the value for a Yaskawa standard motor (4 poles). When you use a PM motor, the drive uses the value in E5-01 [PM Motor Code Selection] to change L3-24.
Automatically Adjust Parameters
When A1-02 = 3, 7 [Control Method Selection = CLV, CLV/PM], do Inertia Tuning. Parameters are automatically adjusted.
Manually Adjust Parameters
Use this formula to find the motor acceleration time:
-
JMotor = Moment of inertia of motor (kg m2)
-
nrated = Motor rated speed (min-1, r/min)
-
Trated = Motor rated torque (N∙m)
The rated torque is calculated using the following expression.
PMotor = Motor Rated Power (kW)