TECHTOP TD350 - Page 190

TD350 Series VFD Function parameter list
-185-
Function
code
Name
Detailed parameter description
Default
value
Modify
P09.06
Derivative time
(Td)
It determines the intensity of the regulation made on
the change rate of deviation between PID 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
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.
Setting range: 0.0–100.0%
Reference
Deviation
limit
Feedback
Output
frequency f
Time t
Time t
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%
○