1.8 L: Protection Functions
YASKAWA ELECTRIC SIEP C710606 10A YASKAWA AC Drive - V1000 PRELIM. Programming Manual
201
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Setting 0: Disabled
When this setting is used, the drive decelerates according to the set deceleration time. With
high inertia loads or rapid deceleration, an overvoltage (OV) fault may occur. In this case
use braking options or switch to another L3-04 selection.
Note:
Use this setting or set L3-04 to 3 whenever a Dynamic Braking Resistor or another braking
option is used.
Setting 1: General Purpose Stall Prevention
With this setting the drive tries to decelerate in the set deceleration time. When the DC bus
voltage exceeds the Stall Prevention level, the drive pauses deceleration. Deceleration
continues as soon as the DC bus voltage drops below that level. Stall Prevention may be
triggered repeatedly to avoid an overvoltage fault. The DC bus voltage level for Stall
Prevention depends on the input voltage setting E1-01.
Note:
1.
This setting should not be used in combination with a Dynamic Braking Resistor or other braking
options. If Stall Prevention during deceleration is enabled, it will be triggered before the braking resistor
option can operate.
2.
This method may lengthen the total deceleration time compared to the set value. If this is not
appropriate for the application consider using a braking option.
The figure below illustrates how Stall Prevention works during deceleration.
No.
<1> Settings 3 and 4 are not available in Open Loop Vector Control for PM motors.
Name
Setting Range
Default
L3-04
Stall Prevention Selection during Deceleration
Selection
0 to 4
1
Drive Input Voltage
Stall Prevention Level during Deceleration
200 V class
Vdc = 380 V
400 V class
E1-01 >= 400 V
Vdc = 760 V
E1-01 < 400 V
Vdc = 660 V
Содержание OYMC V1000
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