Omron SYSDRIVE MX2 SERIES - PID Function

5-73
5-6 Operation Functions
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-Axxxx)
5
Functions
PID Function
This function enables process control of such elements as flow rate, air volume, and pressure.
To use this function, set A071 to "01: Enabled" or "02: Reverse output enabled."
You can disable the PID operation in progress using an external signal.
To use this function, allocate "23: PID disabled" to any of the multi-function inputs. While the
PID terminal is turned ON, the Inverter disables the PID function and outputs normally.
You can limit the PID output under various conditions.
Refer to "Maximum Frequency" on page 5-28, "Frequency Limit" on page 5-60 and PID
Variable Range Limit (A078).
Parameter
No.
Function name Data
Default
setting
Unit
A071 PID Selection
00: Disabled
00 −01: Enabled
02: Reverse output enabled
A072 PID P Gain
0.00 to 25.00
Proportional gain
1.00 −
A073 PID I Gain
0.0 to 3600.
Integral gain
1.0 s
A074 PID D Gain
0.00 to 100.
Differential gain
0.00 s
A075 PID Scale
0.01 to 99.99
For unit conversion of PID Feedback
Value Monitor (d004)
1.00 −
A076
PID Feedback
Selection
00: FI (current)
4 to 20 mA
00 −
01: FV (voltage)
0 to 10V
02: Modbus communication (Modbus-
RTU)
03: Pulse train frequency
10: Operation function output
*1
A077
PID Deviation
Reverse Output
00: Disabled
00 −
01: Enabled (reversing of deviation
polarity)
A078
PID Variable Range
Limit
0.0 to 100.0
Variable range with reference to the
target value
0.0 %
A079
PID Feedforward
Selection
00: Disabled
00 −
01: FV (voltage)
*2
0 to 10V
02: FI (current)
*2
4 to 20 mA
A156
PID Sleep Function
Operation Level
0.0 to 400.0(1000.)
Operation stops once the PID output
drops to below the operation level.
0.00 Hz