Omron MX2 Series User Manual

10 Troubleshooting
10 -
6
Multi-function Compact Inverter 3G3MX2-EV2 User’s Manual (I666-E1)
Name
Description
Alarm
code
Check and remedy
Reference
page
USP error
The inverter trips if the power supply
is turned on with the RUN signal ON.
(This alarm is displayed only when
the USP function is selected.)
E13.
Is the power supply turned on
with the RUN signal ON?
• Check the RUN command.
P. 7-68
Grounding
protection
*1
The inverter trips if a ground fault is
detected between the inverter output
unit and the motor when the power
supply is turned on. (This function
does not work when a residual volt-
age remains in the motor.)
E14.
Is there any ground fault?
• Check the output wiring and
the motor.
Is there any fault in the inverter
itself?
• Disconnect the output wiring
and check it.
Is there any fault in the main cir-
cuit?
• Check the main circuit.
(Refer to Section 11 Mainte-
nance and Inspection.)
−
Incoming
overvoltage
protection
The inverter trips if the incoming volt-
age remains in an overload state for
100 seconds. An overvoltage state
will be detected when DC voltage
between P/+2 and N/− is at approxi-
mately 390 VDC (for 200-V class) or
780 VDC (for 400-V class).
E15.
Is the incoming voltage too high?
• Lower the incoming voltage.
• Suppress the power supply
fluctuation.
• Install the AC reactor in the
input power circuit.
−
Temperature
detection
error
The Inverter trips if the cooling fin
temperature detection system detects
an error such as disconnection.
E19.
The Inverter is faulty.
• Repair it.
−
Abnormal
temperature
The inverter trips if the temperature in
the main circuit exceeds the specified
value due to such as high ambient
temperature.
E21.
Is the inverter installed vertically?
• Check the installation.
Is the ambient temperature high?
• Decrease the ambient tem-
perature.
Is the cooling fan stopped?
• Set b092 to Always enabled.
• Check the power supply to
the cooling fan.
Are the cooling fins clogged?
• Clean the fins.
−
CPU
communication
error
The inverter trips if a malfunction or
error occurs in the built-in CPU during
communications.
E22.
Is there any large noise source
around?
• Take measures against noise.
The inverter is faulty.
• Repair it.
−
Main circuit
error
The inverter trips if an error occurs in
the main circuit board.
E25.
Is there any large noise source
around?
• Take measures against noise.
The inverter is faulty.
• Repair it.
−
*1. If this error occurs, the inverter will not accept the reset operation via the terminal RS or the STOP/RESET key.
Turn off the power supply once.

Omron MX2 Series Specifications

General

Cooling Method	Fan cooling
Output Frequency Range	0.1 to 400 Hz
Control Method	V/f control, Sensorless vector control
Protection Functions	Overcurrent, overvoltage, undervoltage, overload, overheating, short circuit
Communication Options	Modbus RTU
Overload Capacity	150% for 60 seconds
Braking Unit	Built-in
Ambient Operating Temperature	-10°C to +50°C
Enclosure	IP20
Storage Temperature	-20°C to +65°C
Humidity	5 to 95% RH (non-condensing)
Altitude	Up to 1000m
Power Supply Voltage	200-240V AC
Input Voltage	3-phase 200-240V AC