INVT IPE300 Series, Opeartion Manual

Page: 179 / 383

IPE300 series engineering VFD Function parameter list
-168-
Function
code
Name Description Default Modify
or the max. voltage ( P04.31 ). Shorter integral
time indicates stronger adjustment.
Setting range: 0.00
–10.00s
P09.06
Differential time
(Td)
Used to determine the strength of the
change ratio adjustment on the deviation of
PID feedback and reference from the PID
regulator.
If the PID feedback changes 100% during
the time, the adjustment of the differential
regulator (ignoring proportional and integral
function) is the max. output frequency
( P00.03 ) or the max. voltage ( P04.31 ).
Longer differential time indicates stronger
adjustment.
Setting range: 0.00
–10.00s
0.00s
○
P09.07
Sampling cycle
(T)
Used to indicate the sampling cycle of
feedback. The regulator calculates in each
sampling cycle. A longer sampling cycle
indicates slower response.
Setting range: 0.001
–10.000s
0.001s
○
P09.08
PID control
deviation limit
The output of the PID system is relative to
the max. deviation of the closed loop
reference. As shown in the following figure,
the PID regulator stops regulating in the
range of deviation limit. Set the function
parameter properly to adjust the accuracy
and stability of the PID system.
Reference
Deviation
limit
Feedback
Output
frequency f
Time t
Time t
Setting range: 0.0
–100.0%
0.0%
○