12.8 L: PROTECTION
776 SIEPYEUOQ2A01G AC Drive Q2A Technical Manual
Figure 12.128 Stall Prevention During Acceleration Function in OLV/PM
3 : Intelligent Accel
The drive ignores the acceleration time setting and the drive starts to accelerate in the minimum length of time.
The drive automatically adjusts the acceleration rate and the output current will not be more than the value set in
L3-02.
4 : ILim Mode
This function limits the output current with the value set for L3-02 and automatically adjusts the acceleration rate.
When the load (output current) increases to more than the current limit level during acceleration, the drive
automatically adjusts the acceleration rate.
Figure 12.129 Current Limit Acceleration
■ L3-02 StallP Level@Accel
No.
(Hex.)
Name Description
Default
(Range)
L3-02
(0490)
StallP Level@Accel
Sets the output current level to start Stall Prevention during acceleration as a percentage of the
drive rated output current.
Determined by C6-01 and
L8-38
(0 - 150%)
Note:
• If you use a motor that is small compared to the drive and the motor stalls, decrease the setting value.
• When you operate the motor in the constant power range, set L3-03 [StallP Limit@Accel].
■ L3-03 StallP Limit@Accel
No.
(Hex.)
Name Description
Default
(Range)
L3-03
(0491)
StallP Limit@Accel
Sets the lower limit for the stall prevention level during acceleration used for constant output
ranges as a percentage of the drive rated output current.
50%
(0 - 100%)
The stall prevention level set in L3-02 [StallP Level@Accel] is automatically reduced when the motor is running
within the constant output range. Parameter L3-03 is the limit value used to prevent the stall prevention level
during constant output ranges to fall below the minimum required level.
Note:
The function to automatically reduce the stall prevention level does not operate when L3-01 = 4 [StallP Mode@Accel = ILim Mode].
To Next Page
Loading...
Need help?
General