Veikong VFD500 Series User Manual page 110

Chapter 5 Function code
Function
Parameter name
code
P40.19 Differential time TD1
P40.20 Proportional gain KP2
P40.21 Integral time TI2
P40.22 Differential time TD2
PID parameter
P40.23
switchover condition
PID parameter
P40.24 switchover deviation
1
PID parameter
P40.25 switchover deviation
2
VFD500 high performance vector control frequency inverter user manual
Description
0.000s～0.100s
This parameter determines the strength of
the change ratio when PID adjustor carries
out integral adjustment on the deviation of
PID feedback and reference.
If the PID feedback changes 100% during
the time, the adjustment of integral adjustor
(ignoring the proportional
differential effect) is the Max. Frequency
(P01.06) or the Max. Voltage (P12.21).
Longer the integral time, stronger is the
adjusting.
0.00～200.0%.
0.00s
(no any integral effect )～20.00s
0.000s～0.100s
0：no switchover
Do not switch, use KP1, TI1, TD1
1：switchover via DI
Switch by DI terminal
KP1, TI1, TD1 are used when DI terminal
No. 41 function is invalid; KP2, TI2, TD2
are used when valid
2：automatic switchover based on
deviation
The absolute value of PID command and
feedback deviation is less than P40.24,
using KP1, TI1, TD1; the absolute value of
deviation is greater than P40.25, using
KP2, TI2, TD2 parameters; the absolute
value of deviation is between
P40.24~P40.25, The two sets of
parameters are linearly transitioned.
0.0%～P40-25
P40-24～100.0%
- 108-
Default
0.000s
effect and
5.0%
1.00s
0.000s
0
20.0%
80.0%
Property
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