11.3 b: Application
730 YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
■ b5-02: Proportional Gain (P)
No.
(Hex.)
Name Description
Default
(Range)
b5-02
(01A6)
RUN
Proportional Gain (P)
Sets the proportional gain (P) that is applied to PID input.
1.00
(0.00 - 25.00)
Larger values decrease errors, but can cause oscillations. Smaller values let too much offset between the setpoint
and feedback.
Set b5-02 = 0.00 to disable P control.
■ b5-03: Integral Time (I)
No.
(Hex.)
Name Description
Default
(Range)
b5-03
(01A7)
RUN
Integral Time (I)
Sets the integral time (I) that is applied to PID input.
1.0 s
(0.0 - 360.0 s)
Set a short integral time in b5-03 to remove the offset more quickly. If the integral time is too short, overshoot or
oscillation can occur.
Set b5-03 = 0.00 to disable I control.
Figure 11.40 Integral Time and Deviation
■ b5-04: Integral Limit
No.
(Hex.)
Name Description
Default
(Range)
b5-04
(01A8)
RUN
Integral Limit
Sets the upper limit for I control as a percentage of E1-04 [Maximum
Output Frequency].
100.0%
(0.0 - 100.0%)
Applications with loads that quickly change will cause the output of the PID function to oscillate. Set this
parameter to a low value to prevent oscillation, mechanical loss, and motor speed loss.
■ b5-05: Derivative Time (D)
No.
(Hex.)
Name Description
Default
(Range)
b5-05
(01A9)
RUN
Derivative Time (D)
Sets the derivative time (D) for PID control. This parameter adjusts system
responsiveness.
0.00 s
(0.00 - 10.00 s)
Increase the time setting to increase controller responsiveness and possibly cause vibrations. Decrease the time
setting to decrease overshoot and decrease controller responsiveness.
Set b5-05 = 0.00 to disable D control.
To Next Page
Loading...
