Stall Prevention - Veikong gpd 515/g5 Startup Manual

5 . 3 9 S T A L L PREVENTION
A . L 3 - 0 4 : Stall Prevention Selection During Decel
L 3 - 0 4
S e t t i n g
0 Stall prevention during deceleration disabled. An excessively short deceleration time will
generate an overvoltage fault (OV) and the drive will stop.
1 Stall prevention during deceleration enabled (General Purpose). The DC bus voltage level
is monitored, and the deceleration rate is automatically extended to prevent an
overvoltage condition. This deceleration rate may be longer than the set value (C1-02).
2 Stall prevention during deceleration enabled, auto adjust (Intelligent). By monitoring DC
bus voltage, the deceleration rate is automatically adjusted so that deceleration can be
completed in the shortest amount of time, regardless of the set deceleration time.
3 Stall prevention during deceleration enabled, with DB resistor. This setting lengthens
decel ramp time whenever the drive goes into current limit during a deceleration.
Intended to be used when dynamic braking is installed.
Note: Not available in the flux vector control method (A1-02 = 3).
Stall prevention during deceleration
automatically adjusts the deceleration rate
while monitoring the DC bus voltage to
prevent overvoltage during deceleration.
When the motor load is large or decel time
is short, actual decel time may be longer
than the set value because of

stall prevention.

B . L 3 - 0 1 : Stall Prevention Selection During Accel
S e t t i n g
0
1
2
F u n c t i o n
F u n c t i o n
Stall prevention during acceleration disabled
Stall prevention during acceleration enabled
Stall prevention during acceleration enabled, auto adjust
5-86
Factory setting: 1
FREQUENCY
SET
DECEL
TIME
Factory setting: 1
Controls the
deceleration
time needed to
prevent over-
voltage fault.
TIME