IMPULSE
®
•G+ & VG+ Series 4 Technical Manual
November 2020
Page 120
* 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 Sets the 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 Sets the torque compensation filter time. 0–60000 ms V/f: 200
OLV: 20
D03-03 F TorqCmp@Start Sets torque compensation at forward start as a
percentage of motor torque.
0.0–200.0% 0.0**
D03-04 R TorqCmp@Start Sets torque compensation at reverse start as a
percentage of motor torque.
-200.0–0.0% 0.0**
D03-05 TorqCmp Delay T Sets the time constant for torque compensation at
forward start and reverse start (C04-03 and C04-
04).
0–200 ms 10**
D03-06 Start Torq Time Sets the torque compensation time 2. 0–10000 ms 150**
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