IMPULSE•G+/VG+ Series 4 Technical Manual
November 2022
Page 162
5.7.3 Stall Prevention
Table 5-89: Stall Prevention Parameter Settings
* Default and Range changed by D10-01.
Parameter
Display
Function
Range
Default
L03-01
StallP Accel Sel
Stall Prevention will function during acceleration.
(G+ only)
0–2
1
0 Disabled
1 General Purpose
Acceleration is paused as long as the current is above
the L03-02 setting.
2 Intelligent
Accelerate in the shortest possible time without
exceeding the L03-02 level.
L03-02
StallP Accel Lvl
Output current level at which the Stall Prevention
during acceleration is activated. (G+ only)
0–150%
*
L03-03
StallPAcc LowLim
Stall Prevention lower limit during acceleration when
operating in the constant power range. Set as a
percentage of VFD rated current. (G+ only)
0–100%
50
L03-05
StallP Run Sel
Control for the stall prevention during run.
(G+ only)
0–2
1
0 Disabled
Runs at a set frequency. A heavy load may stall.
1 Decel Time 1
Use Decel Time 1 (B05-02)
2 Decel Time 2
Use Decel Time 2 (B05-04)
L03-06
StallP Run Level
Current level to trigger Stall Prevention during run.
Depending on L03-23, the level is automatically
reduced in the constant power range (speed beyond
base speed). (G+ only)
Enabled when L03-05 is set to 1 or 2.
30–150%
*
L03-11
OV Inhibit Sel
Enables or disables the OV suppression function,
which allows the VFD to change the output frequency
as the load changes to prevent an OV fault.
0, 1
0
0 Disabled
1 Enabled
L03-17
DC Bus Reg Level
DC bus voltage during overvoltage suppression and
Stall Prevention during deceleration
230 V: 150–
400 VDC
460 V: 300–
800 VDC
575 V: 431–
1150 VDC
230 V:
375 V
460 V:
750 V
575 V:
930 V
L03-20
DC Bus P Gain
Proportional gain for Stall Prevention and overvoltage
suppression
0.00–5.00
A01-02
L03-21
Acc/Dec P Gain
Proportional gain used to calculate the deceleration
rate during OV suppression function and Stall
Prevention during deceleration
0.10–10.00 sec
A01-02
L03-23
CHP Stall P Sel
Reduces the Stall Prevention during run level in the
constant power range. (G+ only)
0, 1
0
0 Lvl set in L3-06
Sets the Stall Prevention level that is used throughout
the entire frequency range.
1 Autom. Reduction
Automatic Stall Prevention level reduction in the
constant output range. Lower limit is 40% of L03-06.
L03-24
Mtr Accel Time
Time needed to accelerate the uncoupled motor at
rated torque from stop to the maximum frequency.
0.001–10.000
sec
O02-04
