INVT GD300-1R5G-4 - Page 104

Goodrive300 Series VFD Function parameters
99
Function
code
Name
Detailed instruction of parameters
Default
value
Modify
control during wrapdown.
P09.04
Proportional
gain (Kp)
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 given value is
100%, the adjusting range of PID adjustor is the
Max. frequency (ignoring integral and differential
function).
Setting range: 0.00–100.00
1.00
○
P09.05
Intergal time
(Ti)
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
0.10s
○
P09.06
Differential
time (Td)
This parameter determines the strength of th e
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
0.00s
○
P09.07
Sampling
cycle (T)
This parameter means the sampling cycle of the
feedback. The adjustor operates each sampling
cycle. The longer the sapling cycle is, the slower
the response is.
0.100s
○