05
Troubleshooting
This chapter gives a brief overview of possible errors and their causes that may occur during operation with the
MX2 frequency inverter. For a detailed explanation, refer to OMRON's MX2 Operation Manual.
05.1
Error codes
An error code will appear on the display automatically when a fault causes the inverter to trip. An error is
represented in the following form.
The following table lists the error codes, their designation and the causes of each error.
Error Code
Name
Over-current event while at
E01
constant speed
Over-current event during
E02
deceleration
Over-current event during
E03
acceleration
Over-current event during
E04
other conditions
E05
Motor overload protection
06 Troubleshooting
Cause(s)
The inverter output was short-circuited, or the
motor shaft is locked or has a heavy load.
These conditions cause excessive current for
the inverter, so the inverter output is turned
OFF.
The dual-voltage motor is wired incorrectly.
When a motor overload is detected by the
electronic thermal function, the inverter trips
and turns OFF its output.
Check that the thermal model is properly set in
parameter b012, b013, b910, b911and b912.
Check if the application can accept softer acceleration
rates to minimize peak currents F002/F202/A092/A292.
Check if motor parameters are not correctly set
(H020 to H034 or H005), depending in motor
control method (A044/A244).
19
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