Omron MX2 Series User Manual page 381

Parameter
No.
PID Sleep Operation
A157
Delay Time
PID Deviation Excessive
C044
Level
Feedback Comparison
C052
Signal Off Level
Feedback Comparison
C053
Signal On Level
Multi-function Input 1 to
C001 to
C007
7 Selection
Multi-function Output
11/12 Selection
C021, C022
Multi-function Relay Out-
C026
put (AL1, AL2) Function
Selection
Related functions
*1. Setting the PID Selection (A071) to Enabled causes the analog input selection setting in A036 to be allocated
to the PID feedback function.
When the 1st Frequency Reference Selection (A001) is set to 01 (Control circuit terminal block), the analog
input setting other than that selected in A076 is used as the target frequency reference. In this case, the set-
ting in A005 and the function allocated to the terminal AT (Analog input switching) are disabled.
*2. Refer to 7-5-7 Frequency Calculation Function on page 7-39.
*3. In A079, you can set a target value, or have a setting that overlaps with the PID Feedback Selection value.
With an overlapping setting, the analog input is used for both the feedback and feedforward signals.
Precautions for Correct Use
• When the PID function is enabled, the setting unit for the following parameters is changed to
percentage as 100% of the maximum frequency.
Note also that, these parameters are read or written via Modbus communication, the data
unit differs between read and write operations. Set parameter values in units of 0.01 Hz for
writing and in units of the following percentages as 100% of the maximum frequency for
reading.
F001: 0.01%
A011, A012, A020/A220, A021 to A035, A101, A102, A145: 0.1%
• When using the PID function, do not set the Analog Input Filter (A016) to 31 (500-ms filter
with 0.1-Hz hysteresis). Doing so may result in unstable operation.
Basic Structure of PID Control
Target Devia-
tion 
value
+
−
0 to 10 V
4 to 20 mA
Feedback
Kp: Proportional gain
Multi-function Compact Inverter 3G3MX2-EV2 User's Manual (I666-E1)
Function name
0.0 to 25.5
Set the delay time until the sleep operation
starts.
0.0 to 100.0
OD signal output judgment level
0.0 to 100.0
FBV signal output judgment level
0.0 to 100.0
FBV signal output judgment level
23:
24:
04:
31:
A001, A201, A005, d004
Feedforward
1
+
Kp 1 + + Td · s
Ti · s −
0 to 10 V
4 to 20 mA
Ti: Integral time
(A072: PID P gain) (A073: PID I gain)
Data
PID (PID disabled)
PIDC (PID integral reset)
OD (Excessive PID deviation)
FBV (PID feedback comparison
signal)
Disabled
0 to 10 V
4 to 20 mA
Control
fs
Td: Derivative time
(A074: PID D gain)
7 Other Functions
Default
Unit
data
0.0 s
3.0 %
100.0 %
0.0 %
− −
− −
Sensor
=
M
Transducer
s: Operator
7 - 45
7