Hitachi SRW-0J Instruction Manual page 48

10.5 Diagnosis
（1）Inverter error message
Name
Over-current protection
Overload protection
(NOTE1)
Braking resistor
overload protection
Over-voltage
protection
EEPROM error
(NOTE2)
Under-voltage
CT error
CPU error
External trip
USP error
Ground fault protection
Incoming over-voltage
protection
NOTE1: After a trip occurs and 10 seconds pass, restart with reset operation.
NOTE2: When EEPROM error occurs, confirm the setting data again.
Chapter 10 LCD display and operating for SJ300/L300P series
Description
Motor is restricted and
decelerates rapidly, excessive
current is drawn through the
inverter and there is a risk of
damage. Current protection circuit
operates and the inverter output is
switched off.
When the Inverter detects an overload in the motor,
the internal electronic thermal overload operates
and the inverter output is switched off.
When BRD exceeds the usage ratio of the
regenerative braking resistor, the over-voltage
circuit operates and the inverter output is switched
off.
When regenerative energy from the motor exceeds
the maximum level, the over-voltage circuit operates
and the inverter output is switched off.
When EEPROM in the inverter is subject to radiated
noise or unusual temperature rises, the inverter
output is switched off.
When the incoming voltage of inverter is low, the
control circuit can't
under-voltage circuit operates and the inverter
output is switched off.
When an abnormality occurs to a CT (current
detector) in the inverter, the inverter output is
switched off.
When a mistaken action causes an error to the in
built CPU, the inverter output is switched off.
When a signal is given to the EXT intelligent input
terminal, the inverter output is switched off.
(on external trip function select)
This is the error displayed when the inverter power
is restored while still in the RUN mode.
(Valid when the USP function is selected)
When power is turned ON, this detects ground faults
between the inverter output and the motor.
When the incoming voltage is higher than the
specification value, this detects it for 60 seconds
then the over-voltage circuit operates and the
inverter output is switched off.
At constant
Speed
On deceleration
speed
On acceleration
speed
Other
operate correctly.
Display of remote
operator
ERR1 ***
OC. Drive
OC. Decel
OC. Accel
Over. C
Over. L
OL. BRD
Over. V
EEPROM
The
Under. V
CT
CPU
EXTERNAL
USP
GND. Flt
OV. SRC