Omron VARISPEED E7 User Manual page 227

PI Feedback Input Methods
Select one of the following PI control feedback input methods
Input Method
Analog input A2
Analog input A1 (Differential
Mode)
If H3-09 is set to 16, the PI differential mode is activated. Both analog inputs (A1 and A2) become feedback
inputs and the difference between both becomes the feedback value for the PI controller. The monitor U1-24
becomes the feedback 1 monitor, U1-53 becomes the feedback 2 monitor.
In this mode the PI target value automatically is taken from the source set in b1-01 or a multistep speed refer-
ence (d1-01 to d1-04).
PI Adjustment Examples
Suppressing Overshoot
If overshoot occurs, reduce Proportional gain (P), and increase integral time (I).
6
Set a Rapidly Stabilizing Control Condition
To rapidly stabilize the control even if overshoot occurs, reduce integral time (I).
88
6-
Set H3-09 (Multi-function Analog Input Terminal A2 Selection) to B (PI feedback).
Set H3-09 to 16. Analog input A1 becomes the feedback 1 input and the analog input A2
becomes the feedback 2 input.
Response
Before adjustment
After adjustment
Response
Before adjustment
After adjustment
Setting Conditions
Time
Time