PID parameter group 08
PARAMETER DESCRIPTION 231
5.9.4 PID filter setting
Filter can reduce interference in system, but will reduce response performance.
Parameter
Name
Default Setting Range
Content
08-24
P.711
PID target signal filter
time
0.00s
0～650.00s
Set PID target signal low-pass filter time constant
08-25
P.712
PID feedback signal
filter time
0.00s
0～60.00s
Set PID feedback signal low-pass filter time constant
08-26
P.713
PID output signal filter
time
0.00s
0～60.00s
Set PID output signal low-pass filter time constant
PID filter time constant
08-24
(P.711)
is used to set PID target signal filter time constant,
which can
reduce the impact caused by PID
target signal sudden change in the system.
08-25
(P.712)
is used to set PID feedback signal filter time constant, which can reduce interference in feedback
signal, but will lower system response.
08-26(P.713) is used to set PID output signal filter time constant, which can reduce sudden change of PID output
frequency effectively,
but will lower system response.
5.9.5 PID deviation control limit
If deviation between PID target and PID feedback is smaller than 08-27 value, PID won’t change output frequency.
Parameter
Name
Default Setting Range
Content
08-27
P.714
PID deviation control
limit
0.00%
0～100.00%
If deviation between PID target and PID feedback is smaller
than 08-27 value, PID won’t change output frequency.
PID deviation limit
08-27(P.714) is used to set PID deviation control limit. When deviation between target and feedback is less than
08-27(P.714), PID will stop adjusting output frequency, so when deviation is relatively small, output frequency
will remain unchanged, which is very effective for some closed-loop system.
Setting
Setting
