6–6

Monitoring Trip Events, History, & Conditions

Troubleshooting and Maintenance

Error

Name

Probable Cause(s)

Code

 

 

 

 

 

 

 

 

E05

Overload protection

When a motor overload is detected by the

 

electronic thermal function, the inverter trips and

 

 

 

 

turns OFF its output.

 

 

 

E06

Braking resistor overload

When the regenerative braking resistor exceeds

 

the usage time allowance or usage ratio, the

 

 

 

 

inverter trips and turns OFF its output to the

 

 

motor.

 

 

 

E07

Over voltage protection

When the DC bus voltage exceeds a threshold, due

 

to regenerative energy from the motor.

 

 

 

 

 

E08

EEPROM error

When the built-in EEPROM memory has

 

problems due to noise or excessive temperature,

 

 

 

 

the inverter trips and turns OFF its output to the

 

 

motor.

 

 

 

E09

Under-voltage error

A decrease of internal DC bus voltage below a

 

threshold results in a control circuit fault. This

 

 

 

 

condition can also generate excessive motor heat

 

 

or cause low torque. The inverter trips and turns

 

 

OFF its output.

 

 

 

E10

CT (current transformer)

If a strong source of electrical interference is close

error

to the inverter or a fault occurs in a built-in CT

 

 

 

(current transformer), the inverter trips and turns

 

 

its output OFF.

 

 

 

E11

CPU error

A malfunction in the built-in CPU has occurred,

 

so the inverter trips and turns OFF its output to the

 

 

 

 

motor.

 

 

 

E12

External trip

A signal on an intelligent input terminal config-

 

ured as EXT has occurred. The inverter trips and

 

 

 

 

turns OFF the output to the motor.

 

 

 

E13

USP

When the Unattended Start Protection (USP) is

 

enabled, an error occurred when power is applied

 

 

 

 

while a Run signal is present. The inverter trips

 

 

and does not go into Run Mode until the error is

 

 

cleared.

 

 

 

E14

Ground fault

The inverter is protected by the detection of

 

ground faults between the inverter output and the

 

 

 

 

motor during powerup tests. This feature protects

 

 

the inverter, and does not protect humans.

 

 

 

E15

Input over-voltage

When the input voltage is higher than the specified

 

value, it is detected 60 seconds after powerup and

 

 

 

 

the inverter trips and turns OFF its output.

 

 

 

E16

Instantaneous power failure

When the input power is removed for more than

 

15ms, the inverter trips and the output to the motor

 

 

 

 

turns OFF. If the power failure duration exceeds

 

 

the duration set in parameter B002, it is consid-

 

 

ered a power failure. When input power is

 

 

restored, the inverter restarts if the Run signal is

 

 

present, depending on the restart condition.

 

 

 

E21

Inverter thermal trip

When the inverter internal temperature is above

 

the threshold, the thermal sensor in the inverter

 

 

 

 

module detects the excessive temperature of the

 

 

power devices and trips, turning the inverter

 

 

output OFF.