Omron MX2 Series - Low Current Signal (LOC); Fatal Fault Signal (MJA)

7 Other Functions
7 - 90
Multi-function Compact Inverter 3G3MX2-EV2 User’s Manual (I666-E1)
7-8-18 Low Current Signal (LOC)
This signal will be output when the output current falls to or below the Low Current Detection Level
(C039).
In the Low Current Signal Output Selection (C038), select whether to have the inverter output this sig-
nal constantly during run or only during constant speed operation.
Parameter
No.
Function name
Data
Default
data
Unit
C038
Low Current Signal Output Selection
00: Enabled during accelera-
tion/deceleration and
constant speed
01: Enabled during constant
speed
*1
01
−
C039
Low Current Detection Level
0.00 to 2.00  Rated current
Set the output level of the low
current signal.
Rated
current
A
C021, C022
Multi-function Output 11/12 Selection
43: LOC (Low current signal)
−
−
C026
Multi-function Relay Output (AL1, AL2)
Function Selection
*1. When the 1st/2nd Frequency Reference Selection (A001/A201) is set to 01 (Control circuit terminal block (An-
alog input)), the signal may not be judged as a constant speed depending on the sampling condition. In this
case, set C038 to 00 (Enabled during acceleration/deceleration and constant speed) or increase the value set
in the Analog Input Filter (A016).
7-8-19 Fatal Fault Signal (MJA)
If any of the following trips occurs, the inverter will output a separate signal besides the alarm signal
(05: AL).
Alarm code
Description
E08.
EEPROM error
E11.
CPU error
E14.
Ground protection
E30.
Driver error
Parameter
No.
Function name
Data
Default
data
Unit
C021, C022
Multi-function Output 11/12 Selection
53: MJA (Fatal fault signal)
−
−
C026
Multi-function Relay Output (AL1, AL2)
Function Selection
7
7-8 Functions Related to Protection, Warning, and Various Output Signals
7-8-18 Low Current Signal (LOC)