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10 Troubleshooting

10 -

Multi-function Compact Inverter 3G3MX2-EV2 User’s Manual (I666-E1)

10-1-2 Alarm Code List

Name

Description

Alarm

code

Check and remedy

Reference

page

Overcurrent

protection

If the brake is applied to

the motor, or if motor is

rapidly accelerated or

decelerated, a large cur-

rent will flow through the

inverter, which results in a

fault. Therefore, the protec-

tion circuit is activated at

approximately 200% of the

inverter rated output cur-

rent, and the inverter trips.

During

constant

speed

E01.

Is there any rapid load fluctua-

tion?

• Eliminate load fluctuation.

Is there any output short-circuit?

• Check the output wiring.

Is there any ground fault?

• Check the output wiring and

the motor.

P. 5-32

P. 5-59

P. 6-62

P. 7-78

P. 7-81

During

Deceler-

ation

E02.

Is there any rapid deceleration?

• Increase the deceleration

time.

During

Acceler-

ation

E03.

Is there any rapid acceleration?

• Increase the acceleration

time.

Is the motor locked?

• Check the motor and wiring.

Is the torque boost too high?

• Decrease the torque boost

setting.

• If a PM motor is in use, is the

motor set and adjusted prop-

erly?

Others

E04.

Is the DC injection braking power

too high?

• Decrease the braking power.

P. 7-93

Overload pro-

tection

This function monitors the inverter

output current and, if the built-in elec-

tronic thermal function detects a

motor overload, causes the inverter to

trip.

If the Motor Electronic Thermal Selec-

tion (b910) is set to separate the over-

load protection for the motor and for

the inverter, this function serves as

the motor overload protection.

E05.

Is the load too heavy?

• Reduce the load rate.

Is the thermal level setting

(b012/b212) correct?

• Adjust the thermal level to an

appropriate level.

Is the acceleration torque suffi-

cient?

• Increase the acceleration

time.

P. 5-15

P. 5-59

P. 6-62

P. 7-74

P. 7-78

Braking resis-

tor overload

protection

The inverter trips if the usage rate of

the regenerative braking circuit

exceeds the value set in b090.

E06.

Is there any rapid deceleration?

• Increase the deceleration

time.

Is the operation cycle time too

short?

• Increase the operation cycle

time.

P. 5-32

P. 5-64

*1. The inverter will not accept the reset command until approximately 10 seconds after the occurrence of a trip

(specifically, after activation of the protective function).

Brand	Omron
Model	MX2 Series
Category	Inverter
Language	English

Omron MX2 Series User Manual

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Omron MX2 Series Specifications

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