INVT GD350-015G/018P-45-AS - Page 183

Goodrive350 IP55 High-ingress Protection Series VFD Function parameter list
-174-
Function
code
Name
Description
Default
value
Modify
regulation intensity is.
Setting range: 0.00–10.00s
P09.06
Differential time
(Td)
This parameter determines the strength of the
change ratio when PID carries out integral
adjustment on the deviation of PID feedback and
reference.
If the PID feedback changes by 100% during
this period, the adjustment of differential
regulator (ignoring the proportional effect and
differential effect) is the max. output frequency
(P00.03) or the max. voltage (P04.31). Longer
the derivative time is, stronger the regulation
intensity is.
Setting range: 0.00–10.00s
0.00s
○
P09.07
Sampling cycle
(T)
It means the sampling cycle of feedback. The
regulator operates once during each sampling
cycle. The larger the sampling cycle, the slower
the response.
Setting range: 0.001–10.000s
0.001s
○
P09.08
Limit of PID
control deviation
It is the max. allowable deviation of PID system
output value relative to closed-loop reference
value. Within this limit, PID regulator stops
regulation. Set this function code properly to
regulate the precision and stability of PID
system.
Reference
Deviation
limit
Feedback
Output
frequency f
Time t
Time t
Setting range: 0.0–100.0%
0.0%
○
P09.09
Upper limit value
of PID output
These two function codes are used to set the
upper/lower limit value of PID regulator.
100.0% corresponds to max. output frequency
(P00.03) or max. voltage (P04.31)
Setting range of P09.09: P09.10–100.0%
Setting range of P09.10: -100.0%–P09.09
100.0%
○
P09.10
Lower limit value
of PID output
0.0%
○
P09.11
Feedback offline
detection value
Set PID feedback offline detection value, when
the detection value is no more than the feedback
0.0%
○