INVT GD300-01A, Operation Manual

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Goodrive300-01A series VFD for air compressor Function description
-67-
Function
code
Name Description Default Modify
P09.03
PID output
characteristics
selection
0: PID output characteristic is positive: the
feedback signal is larger than PID reference,
which requires the VFD output frequency to
decrease to balance PID, e.g. tension PID
control of winding.
1: PID output characteristic is negative:
feedback signal is larger than PID reference,
which requires the VFD output frequency to
increase to balance PID, e.g. tension PID
control of unwinding.
0
○
P09.04
Proportional
gain (Kp)
It determines the regulation intensity of the
whole PID regulator, the larger the P is, the
stronger the regulation intensity is. If this
parameter is 100, it means the regulation
amplitude made on output frequency
command by the proportional regulator
(ignoring integral and differential actions) is
the max. frequency ( P00.03 ) when the
deviation between PID feedback quantity and
reference quantity is 100%.
Setting range: 0.00
–100.00
10.00
○
P09.05
Integral time
(Ti)
It determines the speed of integral regulation
made on the deviation between PID feedback
quantity and reference quantity by PID
regulator. When the deviation between PID
feedback quantity and reference quantity is
100%, the regulation quantity (ignoring
proportional and differential actions) of
integral regulator can reach max. output
frequency ( P00.03 ) through continuous
regulation in the time set by P09.05.
The shorter the integral time, the stronger the
regulation intensity.
Setting range: 0.00
–10.00s
2.00s
○
P09.06
Differential
time (Td)
It determines the intensity of variation
regulation made on the deviation between
PID feedback quantity and reference quantity
by PID regulator. If the feedback quantity
1.00s
○