INVT Goodrive10 Series Operation Manual page 59

Goodrive10 VFDs
Function
Name
code
preset
PID feedback
P09.02 source
selection
PID output
P09.03 feature
selection
Proportional
P09.04
gain (Kp)
Integral
P09.05
time(Ti)
Differential
P09.06
time(Td)
Detailed description of parameters
the feedback value of the system.
Setting range:-100.0%–100.0%
Select the PID channel by the parameter.
1:Analog channel AI2 feedback
4:MODBUS communication feedback
Note: The reference channel and the feedback channel can
not coincide, otherwise, PID can not control validly.
0: PID output is positive: When the feedback signal
exceeds the PID reference value, the output frequency of
the VFD will decrease to balance the PID. For example, the
strain PID control during wrapup
1: PID output is negative: When the feedback signal is
stronger than the PID reference value, the output frequency
of the VFD will increase to balance the PID. For example,
the strain PID control during wrapdown
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: 0.01–10.00s
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
56
Function parameters
Default
Modify
value
○
1
○
0
○
1.00
○
0.10s
○
0.00s