Omron SYSDRIVE MX2 SERIES, User Manual

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7 Other Functions
7 - 44 Multi-function Compact Inverter 3G3MX2-V1 User’s Manual (I585-E1)
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 S1 to S7 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 5-21, 5-5-3 Frequency Limit on page 5-31, and PID
Variable Range Limit (A078).
7-5-12 PID Function
Parameter
No.
Function name Data
Default
data
Unit
A071 PID Selection
00: Disabled
00
−
01: Enabled
02: Enabled (Reverse output enabled)
A072 PID P Gain
0.00 to 25.00
Set the proportional gain
1.00
−
A073 PID I Gain
0.0 to 3600.
Set the integral time
1.0 s
A074 PID D Gain
0.00 to 100.0
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 FI)
*1
4 to 20 mA
00
−
01:
Analog voltage (Terminal FV)
*1
0 to 10 V
02: Modbus communication
03: Pulse train frequency
10:
Operation function output
*2
A077
PID Deviation Reverse
Output
00: Disabled (Deviation = Target value
−
Feedback value)
00
−
01: Enabled (Deviation = Feedback
value
−
Target value)
A078 PID Variable Range Limit
0.0 to 100.0
Variable range based on target value
0.0 %
A079
PID Feedforward
Selection
00: Disabled
00
−
01:
Analog voltage (Terminal FV)
*3
0 to 10 V
02:
Analog current (Terminal FI)
*3
4 to 20 mA
A156
PID Sleep Operation
Level
0.00 to 400.0
Stops inverter operation if PID output is at
the operation level or lower.
0.00 Hz