YASKAWA Z1000 CIMR-ZU*A Series Programming Manual page 105

The Stall Prevention level is automatically reduced in the constant power range.
during Acceleration on page
• Open Loop Vector Control for PM:
Acceleration stops when the output current reaches the level set to parameter L3-02. When the time set to parameter L3-27
passes, the drive decelerates using the deceleration time set to L3-22
during Acceleration on page
to reaccelerate after the time set to L3-27.
Figure 1.62 Stall Prevention During Acceleration for Permanent Magnet Motors
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 values are determined by parameter L8-38, Carrier Frequency Derating Selection.
• Lower L3-02 if stalling occurs when using a motor that is relatively small compared to the drive.
YASKAWA SIEP YAIZ1U 03B YASKAWA AC Drive – Z1000 Programming Manual
106.
Output current
Stall Prevention Level
During Acceleration
L3-02
L3-02
-15%
Output frequency
Controls the output frequency
to prevent the motor from stalling
Figure 1.61 Stall Prevention During Acceleration for Induction Motors
106). Deceleration stops when the current falls below 85% of L3-02,. The drive will attempt
Output current
L3-02
Output frequency
L3-27
Name
Stall Prevention Level during Acceleration
Refer to L3-03: Stall Prevention Limit
(Refer to L3-22: Deceleration Time at Stall Prevention
15 % of L3-02
Time
L3-27
Time
Deceleration
using L3-22
Setting Range
0 to 150%
1.8 L: Protection Functions
Time
Time
Default
<1> <1>
1
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