BENSHAW RSi H2 Series - Page 220

Parameter Descriptions
208
890053-00-02
Stall Prevention Function and Flux Braking Setting Details
Code
Description
PRT-50
Stall Prevent
Stall prevention can be configured for acceleration, deceleration, or while
operating a motor at constant speed.
Setting
Function
Bit 3
Bit 2
Bit 1
Bit 0
✓
Stall protection during acceleration
✓
Stall protection while operating at a
constant speed
✓
Stall protection during deceleration
✓
Flux braking during deceleration
LCD bit representation in parameter view. When the top segment is black,
bit is set to "ON".
Item
Bit Status (On)
Bit Status (Off)
LCD Display
Setting
Function
0001
Stall protection
during acceleration
If inverter output current exceeds the preset
stall level (PRT- 52, 54, 56, 58) during
acceleration, the motor stops accelerating and
starts decelerating. If current stays above the
stall level, the motor decelerates to the start
frequency (DRV-19). If the current decreases
below the stall level (PRT-52, 54, 56, 58), the
inverter and motor resume acceleration.
0010
Stall protection
while operating at
constant speed
Like stall protection function during
acceleration, the output frequency
automatically decelerates when the current
exceeds the preset stall level while operating at
constant speed. When the current decreases
below the stall level, the inverter and motor
resume acceleration.
0100
Stall protection
during deceleration
The inverter decelerates and keeps the DC bus
voltage below the trip level to prevent an over
voltage fault during deceleration. As a result,
deceleration times can be longer than the set
time depending on the load.
1000
Flux braking during
deceleration
When using flux braking, deceleration time may
be reduced because regenerative energy is
expended at the motor.
1100
Stall protection and
flux braking during
deceleration
Stall protection and flux braking operate
together during deceleration to achieve the
shortest and most stable deceleration
performance.