INVT Goodrive350-19 Series Operation Manual page 279

Goodrive350-19 series VFD for crane
Function
Name
code
P09.07 Sampling cycle (T)
PID control
P09.08
deviation limit
PID output upper
P09.09
limit
PID output lower
P09.10
limit
Feedback offline
P09.11
detection value
Description
feedback and reference from the PID regulator.
If the PID feedback changes 100% during the
time, the adjustment of the differential regulator
(ignoring proportional and integral function) is
the max. output frequency (P00.03) or the max.
voltage (P04.31). Longer differential time
indicates stronger adjustment.
Setting range: 0.00–10.00s
Used to indicate the sampling cycle of feedback.
The regulator calculates in each sampling cycle.
A longer sampling cycle indicates slower
response.
Setting range: 0.001–10.000s
The output of the PID system is relative to the
max. deviation of the closed loop reference. As
shown in the following figure, the PID regulator
stops regulating in the range of deviation limit.
Set the function parameter properly to adjust the
accuracy and stability of the PID system.
Reference
Output
frequency f
Setting range: 0.0–100.0%
The function codes are used to set the upper
and lower limits of PID regulator output values.
100.0% corresponds to the max. output
frequency (P00.03) or max. voltage (P04.31).
P09.09 setting range: P09.10––100.0%
Setting range of P09.10:
Used to set the PID feedback offline detection
value. When the feedback value is smaller than
-267-
Deviation
Feedback
limit
Time t
Time t
-100.0%–P09.09
Function parameter list
Default Modify
○
0.001s
○
0.0%
○
100.0%
○
0.0%
○
0.0%