TECO A510s - ASR Gain Tuning at Maximum Output Frequency; The Gain Tuning of Acceleration; Deceleration Integral Control (20-07); Analog Output Setting

4-286
b) ASR gain tuning at maximum output frequency
1. Operate the motor at the highest output frequency (Fmax).
2. Increase the ASR proportional gain 1 (20-00) as much as possible without causing instability.
3. Decrease the ASR integral time 1(20-01) as much as possible without causing instability.
c) The gain tuning of acceleration / deceleration integral control (20-07)
1. To enable during acceleration / deceleration operation set 20-07 = 1 (enabled), the integral control is
enabled.
2. Integral control enables the motor speed to reach its target speed as soon as possible, but it may result in
over or undershoot, as shown in Figure 4.4.113 & 4.4.114.
3. When one of multi-function digital inputs (03-00 to 03-07) is set to 43 (speed control integral reset), the
input can be used to switch between P control and PI control of the speed control loop system (ASR).
When the multi-function digital input is on, only P control is active and the integral is reset.
a. If the speed overshoot occurs, reduce 20-00 system (ASR proportional gain) and increase the
20-01 system (ASR integral time 1).
b. If the desired speed is not reached, reduce 20-02 system (ASR proportional gain 2) and increase
20-03 (ASR integral time 2).
c. If you cannot eliminate the speed over or undershoot using the gain tuning described above,
decrease the ASR + / - limit (20-05 / 20-06), to decrease the reference frequency compensation
(∆f) limit. Since 20-05/20-06 cannot be changed during running, it is necessary to stop the
inverter first and then decrease the ASR + / - limit.
4. See figure 4.4.111, observe the motor speed waveform and tune the gain at the same time.
AO1
AO2
Related Parameters
04- 11 = 6 (Motor Speed)
04- 12 (Gain)
04- 13 (Bias)
{
04-16 = 6 (Motor Speed)
04- 17 (Gain)
04- 18 (Bias)
{
Figure 4.4.111 Analog output setting
d) ASR+/-limit (20-05, 20-06)
ASR +/-limit is ASR frequency compensation limit and is set as a percentage of the maximum frequency
output 01-02.
Note: If the frequency limit is set too low, the actual motor speed may not reach the target speed.