9
Error Codes
The L100 series inverters will trip on over-current, over-voltage, and
under-voltage to protect the inverter. The motor output turns OFF,
allowing 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 L100 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(A_54) set too
high
• Current transformer / noise error
E05
Overload protection • Motor overload is detected by the
electronic thermal function
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
E11
E22
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
E21
Inverter thermal trip • Inverter internal temperature is
above the threshold
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