INVT Goodrive350 Series Operation Manual page 205

Goodrive350 series high-performance multifunction VFD
Function
Name
code
Sampling cycle
P09.07
(T)
Limit of PID
P09.08
control deviation
Upper limit value
P09.09
of PID output
Lower limit value
P09.10
of PID output
Feedback offline
P09.11
detection value
P09.12 Feedback offline
Description
feedback and reference by PID regulator. If
feedback changes by 100% during this period, the
regulation of differential regulator (ignoring integral
and differential actions) is Max. output frequency
(P00.03)
The longer the derivative time, the stronger the
regulation intensity.
Setting range: 0.00–10.00s
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
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.
Setting range: 0.0–100.0%
Reference
Output
frequency f
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
Set PID feedback offline detection value, when the
detection value is no more than the feedback
offline detection value, and the duration exceeds
-196-
Deviation
Feedback
limit
Time t
Time t
Function parameter list
Default
Modify
value
○
0.001s
○
0.0%
○
100.0%
○
0.0%
○
0.0%
○
1.0s