INVT Goodrive350 Series Operation Manual page 193

Goodrive350 series high-performance multifunction VFD
Function
Name
code
Proportional gain
P09.04
(Kp)
P09.05 Integral time (Ti)
Derivative time
P09.06
(Td)
Description
decrease for PID to reach balance, eg, tension PID
control of winding
1: PID output is negative characteristics: namely
the feedback signal is less than PID reference,
which requires VFD output frequency to increase
for PID to reach balance, eg, tension PID control of
unwinding.
This function code is suitable for proportional gain
P of PID input.
It determines the regulation intensity of the whole
PID regulator, the larger the value of P, the
stronger the regulation intensity. If this parameter
is 100, it means when the deviation between PID
feedback and reference is 100%, the regulation
amplitude of PID regulator (ignoring integral and
differential effect) on output frequency command is
the max. frequency (ignoring integral and
differential actions).
Setting range: 0.00–100.00
It determines the speed of integral regulation
made on the deviation between PID feedback and
reference by PID regulator. When the deviation
between PID feedback and reference is 100%, the
regulation of integral regulator (ignoring integral
and differential actions), after undergoing
continuous regulation during this time period, can
reach Max. output frequency (P00.03)
The shorter the integral time, the stronger the
regulation intensity.
Setting range: 0.00–10.00s
It determines the intensity of the regulation made
on the change rate of deviation between PID
feedback and reference by PID regulator. If
feedback changes by 100% during this period, the
regulation of differential regulator (ignoring integral
and differential actions) is Max. output frequency
(P00.03)
The longer the derivative time, the stronger the
regulation intensity.
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Function parameter list
Default
Modify
value
○
1.80
0.90s
○
○
0.00s