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Error Codes
The L300P series inverters will trip on over-current, over-voltage, and
under-voltage to protect the inverter. The motor output turns OFF, allow-
ing the motor to free-run to a stop. Press the Stop/Reset key to reset the
inverter and clear the error.
Basic Error Codes
Error
Code
Name Probable Cause(s)
E01
Over current event while at
constant speed
• Inverter output was short-circuited
• Motor shaft is locked
• Load is too heavy
• A dual-voltage motor is wired
incorrectly
Note: The L300P will over current trip
at nominally 200% of rated current
E02
Over current event during
deceleration
E03
Over current event during
acceleration
E04
Over current event for other
conditions
• DC braking power(A054) set too high
• Current transformer / noise error
E05
Overload protection • Motor overload is detected by the
electronic thermal function
E06
Braking resistor overload • Regenerative braking resistor exceeds
the usage time or usage ratio
E07
Over voltage
protection
• DC bus voltage exceeds a threshold,
due to regenerative energy from motor
E08
EEPROM error • Built-in EEPROM memory experi-
enced noise, high temperature, etc.
E09
Under-voltage error • DC bus voltage decreased enough to
cause a control circuit fault
E10
CT error
(current transformer)
• High electrical noise near inverter
• A fault occurred in the built-in CT
E11
CPU error • Built-in CPU had internal error
E12
External trip • [EXT] input signal detected
E13
USP (Unattended Start
Protection)
• When (USP) was enabled, an error
occurred when power was applied while
a Run signal was present
E14
Ground fault • A ground fault was detected between
the inverter output and the motor. This
feature protects the inverter, and does
not protect humans.
E15
Input over-voltage • Input voltage was higher than the
specified value, 60 sec. after powerup
E16
Instantaneous power failure • Input power removal > 15ms or
> B002... inverter restarts on Run cmd