INVT Goodrive20-UL VFD Series Operation Manual page 87

Goodrive20-UL Series VFD
Function
Name
code
Proportiona
l gain at
P09.04 high
frequency
(Kp)
Integral
time at high
P09.05
frequency
(Ti)
Differential
time at high
P09.06
frequency
(Td)
Sampling
P09.07
cycle(T)
Description
balance the PID. For example, the strain PID
control during wrapdownk.
The function is applied to the proportional gain
P of PID input.
P determines the strength of the whole PID
adjuster. The parameter of 100 means that
when the offset of PID feedback and reference
value is 100%, the adjusting range of PID
adjustor is the Max. frequency (ignoring integral
function and differential function).
Setting range:0.00–100.00
This parameter determines the speed of PID
adjustor to carry out integral adjustment on the
deviation of PID feedback and reference.
When the deviation of PID feedback and
reference is 100%, the integral adjustor works
continuously after the time (ignoring the
proportional effect and differential effect) to
achieve the Max. Frequency (P00.03) or the
Max. Voltage (P04.31). Shorter the integral
time, stronger is the adjustment
Setting range: 0.00–10.00s
This parameter determines the strength of the
change ratio when PID adjustor carries out
integral adjustment on the deviation of PID
feedback and reference.
If the PID feedback changes 100% during the
time, the adjustment of integral adjustor
(ignoring the proportional effect and differential
effect) is the Max. Frequency (P00.03) or the
Max. Voltage (P04.31). Longer the integral
time, stronger is the adjusting.
Setting range: 0.00–10.00s
This parameter means the sampling cycle of
the feedback. The modulator calculates in each
sampling cycle. The longer the sapling cycle is,
the slower the response is.
Setting range: 0.001–10.000s
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Function parameters
Default Modify
○
1.00
○
0.10s
○
0.00s
○
0.100s