Hitachi J300U Series instruction manual Brd%Ed

Symptom

Circuit breaker(MCB)

Electromagnetic contactor (Mg)

Thermal relay(THRY)

Display on the

Failure alarm relay

How to reset

digital operator

Cause

Check

Countermeasure

(display on the

LCD of the

(explanation

remote operator)

of message)

E 0 6

●

The regenerative

A

Check the braking resistor

• Set a longer deceleration

braking time is longer

time.

( O L . B R D )

use ratio set in

A

38

.

by the value set by

• Set a larger operation

BRD%ED.

duty cycle.

• Set

to

.

A

38

0.0

E 0 7

●

Overvoltage in the DC

A

Check whether the speed

Set a longer deceleration

smoothing circuit

was decreased rapidly.

time.

( O v e r . V )

Check whether the motor

Do not use consecutive

was run from the load side.

regenerative loads.

Check whether there is a

Check whether the output

ground fault.

lines or motor is shorted.

E 0 8

●

EEPROM error

A

Check whether there is a

Move the noise source

large-noise source near the

away.

( E E P R O M )

inverter.

Check whether the ambient

Replace the cooling fan.

temperature is too high.

E 0 9

●

Defective power

A

Check whether the voltage

Check the power supply.

supply (insufficient

is lowered.

( U n d e r . V )

voltage)

Check whether the MCB or

Replace the MCB or Mg.

Mg has a poor contact.

Check whether 10 or more

Check the power supply.

instantaneous power

outages within 100 ms

occurred in 10 minutes.

E 1 0

●

CT error

A

Check whether the CT is

Repair the CT.

( C T )

defective.

E 1 1

●

CPU error

A

Check whether there is a

Move the noise source

large-noise source near the

away.

( C P U )

inverter.

Check whether the inverter

Repair the inverter.

is defective.

E 1 2

●

External trip

A

Check whether there was a

Eliminate the error from

defective external unit

the external unit.

(EXTERNAL)

when the external trip

function was selected.

E 1 3

●

USP error

A

Check whether power was

Eliminate the error from

turned on while the inverter

the external unit.

was running when the USP

( U S P )

function was selected.

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