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ACS 160 User’s Manual
4003
PID DERIV TIME
PID controller derivation time. If the process error value changes linearly, D part adds a constant value into
the PID controller output. The derivative is filtered with a 1-pole filter. The time constant of the filter is
defined by parameter 4004
PID
DERIV
FILTER
.
4004
PID DERIV FILTER
Time constant for the filter of D part. By increasing the filter time constant it is possible to smooth the effect
of the D part and suppress noise.
4005
ERROR VALUE INV
Process error value inversion. Normally, a decrease in feedback signal causes an increase in drive speed. If
a decrease in feedback signal is desired to cause a decrease in speed, set
ERROR
VALUE
INV
to 1 (
YES
).
0 =
NO
1 =
YES
4006
ACTUAL VAL SEL
PID controller feedback (actual) signal selection. Feedback signal can be a combination of two actual
values
ACT
1 and
ACT
2. Source for actual value 1 is selected by parameter 4007 and source for actual value
2 is selected by parameter 4008.
1 =
ACT
1
Actual value 1 is used as the feedback signal.
2 =
ACT
1-
ACT
2
Difference of actual values 1 and 2 is used as the feedback signal.
3 =
ACT
1+
ACT
2
Sum of actual values 1 and 2.
4 =
ACT
1*
ACT
2
Product of actual values 1 and 2.
5 =
ACT
1/
ACT
2
Quotient of actual values 1 and 2.
6 =
MIN
(
A
1,
A
2)
Smaller of actual values 1 and 2.
7 =
MAX
(
A
1,
A
2)
Greater of actual values 1 and 2.
8 = sqrt (A1-A2)
Square root of difference of actual values 1 and 2.
9 = sqA1 + sqA2
Sum of square roots of actual values 1 and 2.
Code Description
t
100 %
Gain
Process Error Value
PID derivation time
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