TECO A510s - SV Control Mode and PMSV Mode; ASR Setting in V;F +PG Control Mode; Tuning the Speed Control ASR Gain; ASR Gain Setting (V;F+PG)

4-285
SV control mode and PMSV mode:
The ASR function adjusts the output frequency to control the motor speed to minimize the difference between the
frequency reference and actual motor speed.
The ASR controller in SLV mode uses a speed estimator to estimate the motor speed. In order to reduce speed
feedback signal interference, a low-pass filter and speed feedback compensator can be enabled.
The ASR integrator output can be disabled or limited. The ASR output is passed through a low-pass filter.
20-00
20-02
20-01
20-03
20-08
Frequency
Reference
Speed
Feedback
I Limit
20-04
Primary
delay time
Torque
Limit
Torque
Reference
21-05 to 21-08
20-07 = 1 (during
accel/decel)
20-07 = 0
Speed Control Integral
reset
03-00 to 03-07 = 43
P
I
+
-
+
+
Figure 4.4.109 ASR block diagram (SV mode)
ASR setting in V/F +PG control mode
In V/F+PG mode, set the proportional (P) gain and integral (I) time at the minimum output frequency (20-02 and
20-03) and maximum output frequency (20-00 and 20-01). Refer to the figure 4.4.110.
Figure 4.4.110 ASR gain setting (V/F+PG)
Tuning the speed control ASR gain:
a) ASR gain tuning at minimum output frequency
1. Operate the motor at the lowest output frequency.
2. Increase the ASR proportional gain 2 (20-02) as much as possible without causing instability.
3. Decrease the ASR integral time 2(20-03) as much as possible without causing instability.
4. Check that the output current is less than 50% of the inverter rated current.
If the output current is more than 50% of the inverter rated current, decrease 20-02 and increase 20-03.
P.I
0%
100%
(Fmax , 01-02)
P=20-00
I=20-01
P=20-02
I=20-03
Output
Frequency