Stall Prevention Level
During Acceleration
L3-02
L3-02
-15%
Output current
Output frequency
Time
Time
Controls the output frequency
to prevent the motor from stalling
Figure 1.63 Stall Prevention During Acceleration for Induction Motors
• 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 (
Refer to L3-22: Deceleration Time at Stall Prevention
during Acceleration on page 115
). Deceleration stops when the current falls below 85% of L3-02,. The drive will attempt
to reaccelerate after the time set to L3-27.
Output current
L3-02
Output frequency
Time
Time
Deceleration
using L3-22
L3-27
L3-27
15 % of L3-02
Figure 1.64 Stall Prevention During Acceleration for Permanent Magnet Motors
Setting 3: Enabled (Current Limit)
The acceleration rate is automatically adjusted while limiting the output current at the value set to L3-02, Stall Prevention
Level during Acceleration.
1.8 L: Protection Functions
112
YASKAWA ELECTRIC SIEP C710636 10C Z1000U HVAC MATRIX Drive Programming Manual
