Omron 3G3MX2-A2002-EV2 - PID Function

7 Other Functions
7 - 44
Multi-function Compact Inverter 3G3MX2-EV2 User’s Manual (I666-E1)
7-5-12 PID Function
Use this function to control the flow rate, air volume, pressure, and other processes. To use this func-
tion, set A071 to 01 (Enabled) or 02 (Enabled: Reverse output enabled).
The PID function can be disabled during PID operation via external signal input.
To use this function, set one of the Multi-function Input 1 to 7 Selection (C001 to C007) to 23 (PID: PID
disabled). This causes the PID function to be disabled while the terminal PID is ON and the inverter
generates an output according to the frequency reference.
You can also use this function to limit the PID output with reference to the target value. Set the
upper/lower limit value in the PID Variable Range Limit (A078) as a percentage of the maximum fre-
quency.
Because the PID output is a frequency reference for the inverter, the base frequency, maximum fre-
quency, frequency limit settings are enabled. For details on these functions, refer to 5-3-3 Base Fre-
quency and Maximum Frequency of Motor on page 5-20, 5-5-3 Frequency Limit on page 5-30, and PID
Variable Range Limit (A078).
Parameter
No.
Function name
Data
Default
data
Unit
A071
PID Selection
00: Disabled
01: Enabled
02: Enabled (Reverse output enabled)
00
−
A072
PID P Gain
0.00 to 25.00
Set the proportional gain
1.00
−
A073
PID I Gain
0.0 to 3600.0
Set the integral time
1.0
s
A074
PID D Gain
0.00 to 100.00
Set the derivative time
0.00
s
A075
PID Scale
0.01 to 99.99
For unit conversion for PID Feedback
Value Monitor (d004)
1.00
time
A076
PID Feedback Selection
00:
Analog current (Terminal OI)
*1
4 to 20 mA
01:
Analog voltage (Terminal O)
*1
0 to 10 V
02: Modbus communication
03: Pulse train frequency
10:
Operation function output
*1
00
−
A077
PID Deviation Reverse
Output
00: Disabled (Deviation = Target value −
Feedback value)
01: Enabled (Deviation = Feedback
value − Target value)
00
−
A078
PID Variable Range Limit
0.0 to 100.0
Variable range based on target value
0.0
%
A079
PID Feedforward
Selection
00: Disabled
01:
Analog voltage (Terminal O)
*2
0 to 10 V
02:
Analog current (Terminal OI)
*3
4 to 20 mA
00
−
A156
PID Sleep Operation
Level
0.00 to 590.00
Stops inverter operation if PID output is at
the operation level or lower.
0.00
Hz