- -
59
No. Parameter
name
Description
PID function
selection
When the PID function is selected, this parameter is used to adjust the
inverter’s output frequency according to the deviation of the detected value
from the target value. Using the PID function enables air flow rate, water
flow rate or other parameters to be controlled.
■
Disables PID control
●
Enables PID control (Reverse)
●
Enables PID control (Normal)
・
When this parameter is set to
(Reverse), the output
frequency (control quantity) will be increased if the deviation (target value –
measured value) is a positive value. If it is a negative value, the output
frequency (control quantity) will be reduced.
・
When this parameter is set to
(Normal), the output
frequency (control quantity) will be increased if the deviation (target value –
measured value) is a negative value. If it is a positive value, the output
frequency (control quantity) will be reduced.
Relationship between deviation and output frequency
Detected value and target value entering method
Configuration (Example)
■
: Factory setting
Deviation
Positive
Negative
Reverse
Normal
Detected value
Target value
(specified by [
Frequency command selection])
4 - 20 mA signal
input to FIN2
Select either
Operation panel
Inverter’s control dial
0 - 5V(FIN
1
)
0 -
1
0V(FIN
1
)
0 - 5 V or 0 - 10 V
signal input to
FIN1
Select either
Operation panel
Inverter’s control dial
F
I
N2
F
I
N
1
Inverter
Motor
Target value
0 - 5V
Detected value 4 - 20mA
Temperature
sensor
Fan
* Set [
Frequency command
selection] to
.