Astraada DRV-22 inverters Function Parameters
46
Function
code
Name
Detailed instruction of parameters
Default
value
Modify
The setting range:-100.0%~100.0%
P09.02
PID feedback
source
Select the PID channel by the parameter.
0:Analog channel AI1 feedback
1:Analog channel AI2 feedback
2:Analog channel AI3 feedback
3:High speed HDI feedback
4:MODBUS communication feedback
5~7:Reserved
Note: The reference channel and the feedback channel can
not coincide, otherwise, PID can not control effectively.
0
○
P09.03
PID output
feature
0: PID output is positive: when the feedback signal exceeds
the PID reference value, the output frequency of the inverter
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 inverter will increase to balance the PID. For
example, the strain PID control during wrapdown
0
○
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
function and differential function).
The setting range:0.00~100.00
1.00
○
P09.05
Interval
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 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
0.00s
○
P09.07
Sampling
cycle(T)
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
0.100s
○
P09.08
PID control
deviation limit
The output of PID system is relative to the maximum
deviation of the close loop reference. As shown in the
diagram below, PID adjustor stops to work during the
deviation limit. Set the function properly to adjust the
accuracy and stability of the system.
0.0%
○
