YASKAWA A1000 Technical Manual page 112

4.6 Basic Drive Setup Adjustments
Figure 4.31 Stall Prevention During Acceleration for Permanent Magnet Motors
Note: PM motor control modes are not available on 600 V class drives, CIMR-Ao5oooooo.
Setting 2: Intelligent Stall Prevention
The drive disregards the selected acceleration time and attempts to accelerate in the minimum time. The acceleration rate is
adjusted so the current does not exceed the value set to parameter L3-02.
n L3-02: Stall Prevention Level during Acceleration
Sets the output current level at which the Stall Prevention during acceleration is activated.
No.
L3-02
<1> The upper limit and default value is determined by the duty rating and the carrier frequency derating selection (C6-01 and L8-38 respectively).
• Lower L3-02 if stalling occurs when using a motor that is relatively small compared to the drive.
• Also set parameter L3-03 when operating the motor in the constant power range.
n L3-03: Stall Prevention Limit during Acceleration
The Stall Prevention level is automatically reduced when the motor is operated in the constant power range. L3-03 sets the
lower limit for this reduction as a percentage of the drive rated current.
No.
L3-03
Stall Prevention level during Acceleration
112
Output current
L3-02
Output frequency
Name
Stall Prevention Level during Acceleration
Name
Stall Prevention Limit during Acceleration
E1-06
Base frequency
Figure 4.32 Stall Prevention Level and Limit During Acceleration
L3-27
L3-27
Deceleration
using L3-22
L3-02
L3-03
Output frequency
YASKAWA ELECTRIC TOEP C710616 41B YASKAWA AC Drive - A1000 Quick Start Guide
15 % of L3-02
Time
Time
Setting Range
<1>
0 to 150%
Setting Range
0 to 100%
Default
<1>
Default
50%