Powtran PI9000-S Series - Page 52

Chapter5.Function parameter
48
E2.11
PID feedback loss
detection value
0.0% ： not judging feedback
loss
0.1%～100.0%
0.0%
☆
E2.12
PID feedback loss
detection time
0.0s～20.0s
0 . 0s
☆
This function code is used to determine whether the PID feedback is loss.
When the amount is less than the E2.11 value, and duration is longer than E2.12 value,
inverter will alarm Err.31 fault, and process trouble-shooting according to the fault.
E2.13
Proportional gain KP1
0.0～200.0
80.0
☆
E2.14
Integration time Ti1
0.01s～10.00s
0.50s
☆
E2.15
Differential time Td1
0.00s～10.000s
0.000s
☆
Proportional gain KP1: determine the intensity of the entire PID regulator, the bigger
KP1 value, the greater regulation intensity. When set it to100.0 means that when the
deviation of PID feedback value and a given value is 100.0%, PID controller for adjusting
the amplitude of output frequency command is the maximum frequency.
Integration time Ti1: determine the integral regulator intensity of PID regulator. The
shorter Ti1 time, the great regulation intensity, adjustment intensity. Integration time
means when the PID feedback value and a given value deviation is 100.0%, integral
regulator continuously adjusts to reach the maximum frequency.
Differential time Td1: determine the intensity of PID regulator to adjust the deviation
rate. The longer differential Td1 time, the greater regulator intensity. Differential time is
when the feedback value change 100.0% within this time, the regulation value of the
deviation regulator is maximum frequency.
E2.16
Proportional gain KP2
0.0～200.0
20.0
☆
E2.17
Integration time Ti2
0.01s～10.00s
2.00s
☆
E2.18
Differential time Td2
0.00s～10.000s
0.000s
☆
E2.19
Parameter switching
conditions
No switch action
0
0
☆
Switch via DI terminal
1
Switch automatically according
to the deviation
2
E2.20
PID parameter
switching deviation 1
0.0%～E2.21
20.0%
☆
E2.21
PID parameter
switching deviation 2
E2.20～100.0%
80.0%
☆
In some applications, one set of PID parameters can not meet the needs of the entire
operation, so need to adopt different PID parameters under different circumstances.
This group parameters are used for switching two sets of PID parameters. The way of
setting of regulator parameters E2.16 ~ E2.18 are similar to the parameters E2.13 ~ E2.15.
Two sets of PID parameters can be switched by multi-functional digital terminals DI,
and also can be switched automatically according to the PID deviation.
When DI multi-functional terminal selected, multi-function terminal function to be set
to 43 (PID parameter switching terminal), select the parameter 1 (E2.13 ~ E2.15) when
the terminal is invalid, select the parameter 2 when the terminal is valid (E2.16 ~ E2.18).