IMPULSE•G+/VG+ Series 4 Technical Manual
November 2022
Page 116
Table 5-46: Torque Compensation Parameter Settings
* Default setting is determined by parameter A01-02, Control Method Setting.
** Only available in Open Loop Vector control method (A01-02 = 2).
5.3.4 Automatic Speed Regulator (ASR) Tuning
The ASR controls the motor speed in the Flux Vector control method and adjusts the output torque reference to
minimize the difference between frequency reference and actual motor speed.
The figure below illustrates ASR functionality:
Figure 5-18: Speed Control Block Diagram for Flux Vector
Perform Auto-Tuning and set up all motor data correctly prior to adjusting ASR parameters.
Generally when tuning the ASR, optimize the ASR gain before adjusting the integral time settings. Always make
adjustments with the load connected to the motor.
Parameter
Display
Function
Range
Default
D03-01
Torq Comp Gain
Gain for the automatic torque (voltage) boost
function and helps to produce better starting
torque.
0.00–2.50
1.0*
D03-02
Torq Comp Time
Torque compensation delay time.
0–60000 ms
V/f: 200
OLV: 20
D03-03
F TorqCmp@Start
Torque compensation at forward start as a
percentage of motor torque.
0.0–200.0%
0.0**
D03-04
R TorqCmp@Start
Torque compensation at reverse start as a
percentage of motor torque.
-200.0–0.0%
0.0**
D03-05
TorqCmp Delay T
Time constant for torque compensation at forward
start and reverse start (D03-03 and D03-04).
0–200 ms
10**
D03-06
Start Torq Time
Torque compensation delay time 2.
0–10000 ms
150**
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