YASKAWA FSDrive-MV1000 Parameter Manual page 119

b5-01: PID Function Setting
n
Enables or disables 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.
b5-02: Proportional Gain Setting (P)
n
Sets the P gain that is applied to the PID input. Larger values tend to reduce the error, but may cause oscillations if set too
high. Lower values may allow too much offset between the setpoint and feedback.
No.
b5-02
b5-03: Integral Time Setting (I)
n
Sets the time constant used to calculate the integral of the PID input. The shorter the integral time set in b5-03, the faster
the offset will be eliminated. If the integral time is set too short, overshoot or oscillation may occur. To turn off the
integral time, set b5-03 to 0.00.
No.
b5-03
b5-04: Integral Limit Setting
n
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.
b5-05: Derivative Time (D)
n
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 vibrations. Shorter time settings reduce the overshoot but also
reduce the controller responsiveness. D control is disabled by setting b5-05 to 0.00 s.
No.
b5-05
b5-06: PID Output Limit
n
Sets the maximum output possible from the entire PID controller as a percentage of the maximum frequency (E1-04).
No.
b5-06
YASKAWA ELECTRIC TOEP C710687 03B FSDrive-MV1000 Parameter Guide
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
2.2 b: Application
Setting Range
0 to 4
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%
Default
0
Default
1.00
Default
1.0 s
Default
100.0%
Default
0.00 s
Default
100.0%
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