Chapter IV Function Parameter Table
73
Parameter
Code
Parameter
name
Parameter detailed description
Minimum
Unit
Factory
value
Change
adjustment until the stable speed of the
system reaches the requirements.
F8.08
Differentia
l time Td1
Set range: 0
～
10000ms
Determine how strong the PID regulator
performs adjustment on the deviation
change rate between the PID feedback
quantity and the target value. The shorter
the differential time, the greater the
adjustment intensity.
When the deviation between feedback and
target value changes, an adjustment
proportional to the deviation change rate
is output. The adjustment is only related
to the direction and magnitude of the
deviation change, and has nothing to do
with the direction and magnitude of the
deviation itself. The function of
differential adjustment is to adjust
according to the changing trend when the
feedback signal changes, thus to suppress
the change of the feedback signal.
Please use the differential regulator with
caution, because the differential
regulation is easy to amplify the
interference of the system, especially the
interference with a higher change
frequency.
1ms
0ms
○
F8.09
Proportion
al gain
Kp2
F8.09 set range: 0
～
1000
F8.10 set range: 1
～
10000ms
F8.11 set range: 0
～
10000ms
The parameter functions are the same as
F8.06
～
F8.08, when used to switch the
two groups of PID parameters. Please
refer to F8.12 for switching between both
PID parameters.
1
5
○
F8.10
Integration
time Ti2
1ms
2000ms
○
F8.11
Differentia
l time Td2
1ms
0ms
○
F8.12
Gain
switching
conditions
0: Do not switch
1: Switch through the DI terminal: The
function of the DI terminal is set to 21
(PID parameter switch). When the
terminal is invalid, select parameter group
1 (F8.06
～
F8.08). When the terminal is
valid, select parameter group 2 (F8.09
～
F8.11).
2: Automatic switch based on the
deviation: Select the parameter group 1
(F8.06
～
F8.08) when the absolute value
of the deviation between the target value
and the feedback quantity is less than the
1
0
○