AC300 Series Vector Control Inverter Manual
Function Parameter Specifications
134
F11.08
PID preset output
Setting range: 0.00-100.0%
Factory set: 100.0%
F11.09
PID preset output running time
Setting range: 0.0-6500.0s
Factory set: 0.0s
While it defines as PID start running, frequency ACC to PID pre-set output
[F11.08]
according to ACC time 1. After
setting
[F11.09]
time, it runs as PID closed loop trait.
Note: When PID is used for frequency source given, [F0.03 = 8] preset outputs 100.0% corresponding maximum
output frequency.
F11.10
PID control deviation limit
Setting range: 0.00-100.0%
Factory default: 0.0%
The max deviation allowed by PID feedback to PID given. When feedback is in this range, PID adjustment stops.
Output does not change; the reasonable use of the feature helps coordinate the contradiction between system output
accuracy and stability
.
PID adjustment diagram
F11.11
Proportion gain: P1
Setting range: 0.000-9.999
Factory set: 0.100
F11.12
Integral time: I1
Setting range: 0.0-600.0s
Factory set: 1.0s
F11.13
Differential coefficient : D1
Setting range: 0.000-6.000s
Factory set: 0.000s
F11.14
Proportion gain: P2
Setting range: 0.000-9.999
Factory set: 0.100
F11.15
Integral time: I2
Setting range: 0.0-600.0s
Factory set: 1.0s
F11.16
Differential coefficient : D2
Setting range: 0.000-6.000s
Factory set: 0.000s
The parameter value controlled by PID should be set according to the actual characteristics of the system.PID
parameters group 1 (
F11.11~F11.13
) and PID parameters group 2(
F11.14~F11.16
) ,are selected by the switch
conditions
[F11.17]
set.
Proportion gain P:
AC300 Series Vector Control Inverter Manual
Function Parameter Specifications
135
It decides impact of P act to bias. Response is quicker while gain is bigger. But there will be surge while it is too big.
Integral time I:
It decides the size of effect of I act. The impact is stronger while the I is bigger.
Differential coefficient D:
Decide the impact of change rate of PIN controller to bias or feedback signal. According to the change trend, to
adjust to suppression the change of feedback signal.
F11.17
PID parameter switching condition
Setting range: 0~2
Factory set:0
F11.18
Low value of switching deviation
Setting range: 0.0-100.0%
Factory set: 20.0%
F11.19
High value of switching deviation
Setting range: 0.0-100.0%
Factory set: 80.0%
In some occasions, just one group of PID adjusting parameters can ont meet the requirement of the process ,hence
different PID parameters group need to be adopted in different occasions.
PID parameter switching condition:
0: Not switch
PID parameters select the group 1 (
F11.11~F11.13
)
1: Use DI terminal to switch
Multi function terminal selection is set 23 (PID parameters switch).While this terminal is
invalid, select PID group 1 (
F11.11~F11.13
); while this terminal is valid,select group 2(
F11.14~F11.16
).
2: Switch according to deviation
While the deviation absolute value of PID given and feedback is less than
[F11.18], select group 1;while the deviation absolute value of PID given and feedback is more than
[F11.19]
, select
group 2;while the deviation absolute value of PID given and feedback is between
[F11.18]
and
[F11.19]
, select the
linear interpolation value of the 2 groups,which is as follows;
Switching the PID parameters according to the deviation
F11.20 Reserved
F11.21 Differential
limit
Setting
range: 0.0-100.0%
Factory set: 5.0%
[F11.21]
differential limit is used to set PID differential output range. In PID controller, the differential effect is
sensitive, and easy to make the system oscillation. Usually, limit the PID differential range within a small scale.
