Hitachi J300 Series Instruction Manual page 75

Symptom
Display on the
digital operator
remote operator)
( O L . B R D )
( E E P R O M )
( U n d e r . V )
(EXTERNAL)
CTi Automation - Phone: 800.894.0412 - Fax: 208.368.0415 - Web: www.ctiautomation.net - Email: info@ctiautomation.net
(display on the
LCD of the
E 0 6 The regenerative
braking time is longer
by the value set by
BRD%ED.
E 0 7 Overvoltage in the DC
smoothing circuit
( O v e r . V )
EEPROM error
E 0 8
E 0 9 Defective power
supply (insufficient
voltage)
E 1 0
CT error
( C T )
CPU error
E 1 1
( C P U )
E 1 2 External trip
USP error
E 1 3
( U S P )
Cause
(explanation
of message)
A Check the braking resistor
use ratio set in A 38 .
A Check whether the speed
was decreased rapidly.
Check whether the motor
was run from the load side.
Check whether there is a
ground fault.
A Check whether there is a
large-noise source near the
inverter.
Check whether the ambient
temperature is too high.
A Check whether the voltage
is lowered.
Check whether the MCB or
Mg has a poor contact.
Check whether 10 or more
instantaneous power
outages within 100 ms
occurred in 10 minutes.
A Check whether the CT is
defective.
A Check whether there is a
large-noise source near the
inverter.
Check whether the inverter
is defective.
A Check whether there was a
defective external unit
when the external trip
function was selected.
A Check whether power was
turned on while the inverter
was running when the USP
function was selected.
9-2
Check Countermeasure
• Set a longer deceleration
time.
• Set a larger operation
duty cycle.
• Set A 38 to
Set a longer deceleration
time.
Do not use consecutive
regenerative loads.
Check whether the output
lines or motor is shorted.
Move the noise source
away.
Replace the cooling fan.
Check the power supply.
Replace the MCB or Mg.
Check the power supply.
Repair the CT.
Move the noise source
away.
Repair the inverter.
Eliminate the error from
the external unit.
Eliminate the error from
the external unit.
0.0 .