Chapter 4 Parameters|
4-178 Revision Jan. 2009, 06EE, SW--PW V1.12/CTL V2.12
This parameter can be used to set the proportional gain (P) to decide the response speed.
With large proportional gain, it will get faster response. Too large proportional gain may cause
system oscillation. With small proportional gain, it will get slower response.
13.04 Integral Gain ( I ) Unit: 0.01
Settings 0.00 to 100.00 sec Factory Setting: 1.00
0.00 Disable
The integral controller is used to eliminate the error during stable system. The integral control
doesn’t stop working until error is 0. The integral is acted by the integral time. The smaller
integral time is set, the stronger integral action will be. It is helpful to reduce overshoot and
oscillation to make a stable system. At this moment, the decreasing error will be slow. The
integral control is often used with other two controls to become PI controller or PID controller.
This parameter is used to set the integral time of I controller. When the integral time is long, it
will have small gain of I controller, the slower response and bad external control. When the
integral time is short, it will have large gain of I controller, the faster response and rapid
external control.
When the integral time is too small, it may cause system oscillation.
When it is set to 0.0, the integral function is disabled.
13.05 Speed Control Output Frequency Limit Unit: 0.01
Settings 0.00 to 100.00Hz Factory Setting: 10.00
This parameter is used to limit the max. output frequency.
From the following PG speed diagram, output frequency (H) = frequency command (F) +
speed detection value via PG feedback. With the speed change of motor load, the speed
change will be sent to drive via PG card to change the output frequency. So this parameter
can be used to decrease the speed change of motor load.
13.06 Speed Feedback Display Filter Unit: 1
Settings 0 to 9999 (*2ms) Factory Setting: 500
When Pr.0.04 is set to 14, its display will be updated regularly. This update time is set by
Pr.13.06.
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