GE Industrial Solutions AF-300 G11 - Manual (Page 92)

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Data subject to change without notice 7/07. © 2007 GE Drives
H22 PID control (P-gain)
H23 PID control (I-gain)
H24 PID control (D-gain)
These functions are not generally used alone but are
combined like P control, PI control, PD control, and PID
control.
P operation
An operation using an output frequency proportional to
deviation is called P operation, which outputs an
operation amount proportional to deviation, though it
cannot eliminate deviation alone.
H 2 2 P – G A I N
Setting range: 0.01 to 10.0 times
P (gain) is the parameter that determines the response
level for the deviation of P operation. Although an
increase in gain speeds up response, an excessive gain
causes vibration, and a decrease in gain delays re-
sponse.
I operation
An operation where the change speed of the output
frequency is proportional to the deviation is called an I
operation. An I operation outputs an operation amount as
the integral of deviation and, therefore, has the effect of
matching the feedback control amount to the target value
(e.g., set frequency), though it deteriorates response for
significant changes in deviation.