WEG CFW-11 Programming Manual page 118

Vector Control
P0161 – Speed Regulator Proportional Gain
Adjustable
Range:
P0162 – Speed Regulator integral Gain
Adjustable
Range:
Proprieties:
Access groups
via HMI:
Description:
The speed regulator gains are calculated automatically in function of the parameter P0413 (T
However, these gains can be adjusted manually in order to optimize the speed dynamic response, which becomes
faster with their increase. Yet, if the speed begins to oscillate, they must be reduced.
In a general manner, one can say that the Proportional gain (P0161) stabilizes abrupt speed or reference changes,
while the Integral gain (P0162) corrects the error between the reference and the speed, and improves the torque
response at low speeds as well.
Procedure for Manual Optimization of the Speed Regulator:
1. Select the acceleration (P0100) and/or deceleration (P0101) time according to the application.
2. Adjust the speed reference for 75 % of the maximum value.
3. Configure an analog output (AOx) for Real Speed, by programming P0251, P0254, P0257 or P0260 in 2.
4. Disable the speed ramp (Run/Stop=Stop) and wait until the motor stops.
5. Enable the speed ramp (Run/Stop=Run). Observe with an oscilloscope the motor speed signal at the chosen
analog output.
6. Verify among the options of the figure 11.4, which waveform best represents the observed signal.
N(V)
a) Integral Gain – P0162 small and/
or Proportional Gain – P0161 high.
7. Adjust P0161 and P0162 according to the response type presented in the figure 11.4.
a) Increase the proportional gain (P0161) and/or increase the integral gain (P0162);
11
b) Speed regulator is optimized;
c) Reduce the proportional and/or integral gain.
11-16
0.0 to 63.9
0.000 to 9.999
Vector
01 PARAMETER GROUPS
29 Vector Control
90 Speed Regulator
N(V)
t (s)
b) Optimized speed
regulator
Figure 11.4 - Speed regulators response types
Factory
Setting:
Factory
Setting:
m
N(V)
t (s)
c)Integral Gain – P0162 high and/or
Proportional Gain – P0161 small.
7.4
0.023
constant).
t (s)