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L3-02: Stall Prevention Level During Acceleration
Sets the output current level at which the Stall Prevention during acceleration is activated.
No.
Name
Setting Range
Default
L3-02
Stall Prevention Level during Acceleration
0 to 150%
<1>
<1>
<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).
• If stalling occurs with L3-02 set to its default value when using a motor that is relatively small compared to the drive,
try lowering L3-02.
• When operating the motor in the constant power range, also set parameter L3-03.
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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.
Name
Setting Range
Default
L3-03
Stall Prevention Limit during Acceleration
0 to 100%
50%
Stall Prevention level during Acceleration
Output frequency
L3-03
E1-06
Base frequency
L3-02
Figure 5.81 Stall Prevention Level and Limit During Acceleration
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L3-22: Deceleration Time at Stall Prevention During Acceleration
Sets the brief deceleration time used when stalling occurs while accelerating a PM motor. When set to 0, this function is
disabled and the drive will decelerate at the selected deceleration time when stalling occurs.
The function is effective only in Open Loop Vector Control for PM motors and if parameter L3-01 is set to 1.
No.
Name
Setting Range
Default
L3-22
Deceleration Time at Stall Prevention During Acceleration
0 to 6000.0 s
0.0 s
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L3-04: Stall Prevention During Deceleration Selection
Stall Prevention during deceleration can control the deceleration based on the DC bus voltage and prevent an overvoltage
fault caused by high inertia or rapid deceleration.
Selects the Stall Prevention method during deceleration.
No.
Name
Setting Range
Default
L3-04
Stall Prevention Selection During Deceleration Selection
0 to 4
<1>
1
<1> Settings 3 and 4 are not available in Open Loop Vector Control for PM motors.
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.
Drive Input Voltage
Stall Prevention Level during Deceleration
200 V Class
Vdc = 380 V
5.8 L: Protection Functions
SIEP C710606 20 OYMC AC Drive - V1000 User Manual
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5
Parameter Details
7/16/2008-13:23
