YASKAWA P1000 Technical Manual page 164

5.2 b: Application
n b5-01: PID Function Setting
Enables and 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.
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
n b5-06: PID Output Limit
Sets the maximum output possible from the entire PID controller as a percentage of the maximum frequency (E1-04).
No.
b5-06
n b5-07: PID Offset Adjustment
Sets the offset added to the PID controller output as a percentage of the maximum frequency (E1-04).
No.
b5-07
n b5-08: PID Primary Delay Time Constant
Sets the time constant for the filter applied to the output of the PID controller. Normally, change is not required.
164
Parameter Name
PID Function Setting
Name
Proportional Gain Setting (P)
Name
Integral Time Setting (I)
Name
Integral Limit Setting
Name
Derivative Time (D)
Name
PID Output Limit
Name
PID Offset Adjustment
Setting Range
0, 1
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
Setting Range
0.0 to 100.0%
Setting Range
-100.0 to 100.0%
YASKAWA SIEP YAIP1U 01C AC Drive - P1000 Technical Manual
Default
0
Default
2.00
Default
1.0 s
Default
100.0%
Default
0.00 s
Default
100.0%
Default
0.0%