YASKAWA A1000 HHP Programming Manual page 37

n b5-01: PID Function Setting
Enables or disables the PID operation and selects the PID operation mode.
No.
b5-01
Setting 0: PID disabled
Setting 1: Output frequency = PID output 1
The PID controller is enabled and the PID output builds the frequency reference. The PID input is D controlled.
Setting 2: Output frequency = PID output 2
The PID controller is enabled and the PID output builds the frequency reference. The PID feedback is D controlled.
Setting 3: Output frequency = frequency reference + PID output 1
The PID controller is enabled and the PID output is added to the frequency reference. The PID input is D controlled.
Setting 4: Output frequency = frequency reference + PID output 2
The PID controller is enabled and the PID output is added to the frequency reference. The PID feedback is D controlled.
Setting 5: Mode compatible with setting 1 of similar products from a previous product line
Setting 6: Mode compatible with setting 2 of similar products from a previous product line
Setting 7: Mode compatible with setting 3 of similar products from a previous product line
Setting 8: Mode compatible with setting 4 of similar products from a previous product line
Note: 1. If the drive is replaced with Varispeed F7 drive or a similar product from a previous product line, use settings 5 to 8 instead of settings
1 to 4.
2. Settings 5 to 8 are not available for models 4A0930 and 4A1200.
n b5-02: Proportional Gain Setting (P)
Sets the P gain applied to the PID input. Larger values will tend to reduce the error but may cause oscillations if set too high,
while lower values may allow too much offset between the setpoint and feedback.
No.
b5-02
n b5-03: Integral Time Setting (I)
Sets the time constant used to calculate the integral of the PID input. The shorter the integral time set to b5-03, the faster the
offset will be eliminated. If the integral time is set too short, however, overshoot or oscillation may occur. To turn off the
integral time, set b5-03 to 0.00.
No.
b5-03
n b5-04: Integral Limit Setting
Sets the maximum output possible from the integral block as a percentage of the maximum frequency (E1-04).
No.
b5-04
Note: On some applications, especially those with rapidly varying loads, the output of the PID function may show a fair amount of oscillation.
Program b5-04 to apply a limit to the integral output and suppress this oscillation.
n b5-05: Derivative Time (D)
Sets the time the drive predicts the PID input/PID feedback signal based on the derivative of the PID input/PID feedback.
Longer time settings improve the response but can cause instability, while shorter time settings reduce the overshoot but reduce
controller responsiveness. D control is disabled by setting b5-05 to zero seconds.
No.
b5-05
YASKAWA ELECTRIC SIEP YEAHHP 01B YASKAWA AC Drive – A1000 HHP Programming Manual
Parameter Name
PID Function Setting
Name
Proportional Gain Setting (P)
Name
Integral Time Setting (I)
Name
Integral Limit Setting
Name
Derivative Time (D)
1.2 b: Application
Setting Range
0 to 8
Setting Range
0.00 to 25.00
Setting Range
0.0 to 360.0 s
Setting Range
0.0 to 100.0%
Setting Range
0.00 to 10.00 s
Default
0
Default
2.00
Default
1.0 s
Default
100.0%
1
Default
0.00 s
37