Integral Control Action Setting - Mitsubishi Electric A800 Plus Series Function Manual

3.5.12

Integral control action setting

The manipulated amount for PID integral action can be limited by setting parameters.
The integral control action can be enabled or disabled (the integral term is held) according to the PID control deviation.
Integral control can be disabled by the signal input. (The integral term value is cleared.)
Pr. Name
135 Integral clamp (positive
R161 polarity)
136 Integral clamp (negative
R162 polarity)
485
Integral control activation
R149
486
Deviation A
R140
487
Deviation B
R141
488
Deviation C1
R142
489
Deviation C2
R143
1015 Integral stop selection at
A607 limited manipulated amount
Integral action limit (Pr.135, Pr.136)
• Use Pr.135 Integral clamp (positive polarity) or Pr.136 Integral clamp (negative polarity) to limit the manipulated
amount for PID integral action.
Pr.135 setting Pr.136 setting
9999 9999
9999 0 to 100%
0 to 100% 9999
0 to 100% 0 to 100%
Integral control action selection (Pr.485)
• The integral control action can be selected according to the PID control deviation.
• Use Pr.486 to Pr.489 to set the deviation, and use Pr.485 Integral control activation to select the action.
• In the holding period, the integral of the deviation is stopped and the integral term is retained as it is. The manipulated
amount is calculated using the kept integral term value.
Held
Pr.485="3"
Held
Pr.485="2"
Pr.485="1"
Pr.485="0"
+100%
∗1
The integral of the deviation is valid when "9999" is set in Pr.488 or Pr.489.
Initial value
9999
9999
0
600%
400%
9999
9999
0
Integral action limit level
(positive polarity)
100%
100%
Pr.135 setting
Pr.135 setting
Enabled Held
Enabled
Enabled Held
Enabled
Deviation A Deviation C1
(Pr.486) (Pr.488)
Dancer feedback speed control details
Setting
range
0 to 100% Set the limit level for integral action.
9999 The limit level is 100%.
0 to 100% Set the limit level for integral action (negative polarity).
9999 As set in Pr.135.
0 to 3 Select the action for integral control.
400.1 to 600%
400 to 599.9%
Set the reference deviation for the integral control
400.1 to
action set in Pr.485.
599.9%
9999: Integral control is valid.
9999
400.1 to
599.9%
9999
0 The integral stops when manipulated amount is limited.
The integral does not stop when manipulated amount is
1
limited.
Integral action limit level
(negative polarity)
100%
Pr.136 setting
Pr.135 setting
Pr.136 setting
∗1 Enabled
∗1 Enabled
0% Deviation C2 Deviation B
(Pr.489) (Pr.487)
DANCER FEEDBACK SPEED CONTROL
Description
Held
Held
Deviation input
-100%
3
85