Fault Codes - Hitachi WJ-0001S User Manual

 Fault Codes

All fault come in parameters D081 to d086, means Hitachi drive can store last 6 fault
history.
Error Name
Code
E01 Over-current event while at
constant speed
E02 Over-current event during
deceleration
E03 Over-current event during
acceleration
E04 Over-current event during
other conditions
E05 Overload protection
E06 Braking resistor overload
protection
E07 Over-voltage protection
E08 EEPROM error
E09 Under-voltage error
E10 Current detection error
E11 CPU error
E12 External trip
E13 USP
E14 Ground fault
Cause(s)
The inverter output was short-circuited, or the
motor shaft is locked or has a heavy load. These
conditions cause excessive current for the
inverter, so the inverter output is turned OFF. The
dual-voltage motor is wired incorrectly.
When a motor overload is detected by the
electronic thermal function, the inverter trips and
turns OFF its output.
When the BRD operation rate exceeds the
setting of "b090", this protective function shuts off
the inverter output and displays the error code.
When the DC bus voltage exceeds a threshold,
due to regenerative energy from the motor.
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.
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.
If an error occurs in the internal current detection
system, the inverter will shut off its output and
display the error code.
A malfunction in the built-in CPU has occurred,
so the inverter trips and turns OFF its output to
the motor.
A signal on an intelligent input terminal
configured as EXT has occurred. The inverter
trips and turns OFF the output to the motor.
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.
The inverter is protected by the detection of
ground faults between the inverter output and the
Ii