Analog I/O Settings; Analog Input (O, Oi) - Omron MX2 Series User Manual

7 Other Functions
7-3

Analog I/O Settings

This section describes the analog I/O signal settings for this inverter.
7-3-1

Analog Input (O, OI)

This inverter has two types of external analog input terminals.
Frequency reference (Analog voltage input) between terminals O and L
This terminal also treats input via the variable resistor (volume) as voltage input to the
inverter.
Frequency reference (Analog current input) between terminals OI and L
For 0 to 20 mA, set A103 to 0%.
For analog input start/end settings, refer to 7-3-5 Analog Input Start/End Function Settings on page 7-25.
Note 1. By default, each analog input signal is adjusted to reach the maximum frequency at 9.8 V or 19.8 mA.
2. If an excessive current is applied to the terminal OI, an E26 (analog current input error) will occur.
The table below shows analog-input related functions. Set each function according to your application.
Parameter
No.
Frequency
A001/A201
reference
A071
PID feedback
selection
A076
A071
PID feedforward
selection
A079
A001/A201
A141
A142
Calculation
frequency
A143
b040
Torque limit
7 - 22
Setting item Function name
1st/2nd Frequency
*1
Reference Selection
PID Selection
*2
PID Feedback
Selection
PID Selection
*3
PID Feedforward
Selection
1st/2nd Frequency
Reference Selection
Calculation Frequency
Selection 1
Calculation Frequency
Selection 2
Calculation Function
Operator Selection
*4
Torque Limit Selection
Multi-function Compact Inverter 3G3MX2-EV2 User's Manual (I666-E1)
: 0 to 10 V
: 4 to 20 mA
Data
01: Control circuit terminal
block
(Analog input)
01: Enabled
02: Enabled (Reverse out-
put enabled)
00: OI (Current)
01: O (Voltage)
01: Enabled
02: Enabled (Reverse out-
put enabled)
01: O (Voltage)
02: OI (Current)
10: Operation function
output
02: Input O (Voltage)
03: Input OI (Current)
Addition (A141 + A142)
00:
Subtraction (A141 −
01:
A142)
Multiplication (A141 
02:
A142)
02: Analog voltage input
Default
Unit
data
−
02
−
00
−
00
−
00
−
00
−
02
−
02
−
03
−
00
−
00