Panasonic M2X Series Instruction Manual page 59

No. Parameter name
PID function
selection
■: Factory setting
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
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
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
Reverse
Normal
Detected value and target value entering method
Detected value
4 - 20 mA signal
input to FIN2
0 - 5 V or 0 - 10 V
signal input to
FIN1
Configuration (Example)
Inverter
Target value
FIN1
0 - 5V
FIN2
Detected value 4 - 20mA
- -
59
Description
Deviation
Positive Negative
Target value
(specified by [ Frequency command selection])
Select either
Operation panel
Inverter's control dial
0 - 5V(FIN1)
0 - 10V(FIN1)
Select either
Operation panel
Inverter's control dial
Fan
Motor
* Set [
selection] to
Temperature
sensor
(Reverse), the output
(Normal), the output
Frequency command
.