Powtran PI9100 Series, Manual, Page: 168 / 255

Chapter 5 Function parameter
163
E2.10 is used for filtering the PID output frequency, the filter will weaken the sudden
change of the inverter output frequency, but it will also bring the response performance of the
process closed loop system.
E2.11
PID feedback loss
detection value
0.0%: not judged feedback loss
0.0%
☆
0.1% to 100.0%
E2.12
PID feedback loss
detection time
0.0s to 20.0s
0s
☆
This function code is used to determine whether the PID feedback is lost or not.
When the PID feedback is less than the PID feedback loss detection value(E2.11), and
the duration is longer than the PID feedback loss detection time(E2.12), the inverter will
alarm fault ID Err.31, and troubleshoot according to the selected method.
E2.13
Proportional gain
KP1
0.0 to 200.0 80.0
☆
E2.14
Integration time Ti1 0.01s to 10.00s
0.50s
☆
E2.15
Differential time
Td1
0.00 to 10.000s 0.000s
☆
Proportional gain KP1:Used to decide the extent of the PID regulator, the greater KP1,
the greater adjusting extent. This parameter 100.0 means that when the deviation of PID
feedback value and reference value is 100.0%, the PID regulator will adjust the output
frequency command to the maximum frequency.
Integration time Ti1: used to decide the extent of integral adjustment of the PID
regulator. The shorter integration time, the greater extent of integral adjustment The
integration time means that when the deviation of PID feedback value and reference value is
100.0%, the integration regulator will successively adjust to the maximum frequency for the
time.
Differential time Td1: used to decide the extent that the PID regulator adjusts the
deviation change rate. The longer differential time, the greater extent of adjustment The
differential time means that the feedback value changes 100.0% within the time, the
differential regulator will adjust to the maximum frequency.
E2.16 Proportional gain KP2
0.0 to 200.0
20.0
☆
E2.17 Integration time Ti2
0.01s to 10.00s
2.00s
☆
E2.18 Differential time Td2
0.000 to 10.000
0.000s
☆
E2.19
PID parameter
switching conditions
No switching
0
0
☆
Switching through DI
terminal
1
Automatically
switching according to
deviation.
2
E2.20
PID parameter
switching deviation 1
0.0% to E2.21 20.0%
☆
E2.21
PID parameter
switching deviation 2
E2.20 to 100.0%
80.0%
☆
In some applications, only one group of PID parameters can not meet the needs of the