Hitachi NB5741XD manual Basic Error Codes, Error Name Probable Causes Code

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	Name	Probable Cause(s)
Code
E01	Over current event while	• Inverter output was short-circuited
	at constant speed	• Motor shaft is locked
		• Load is too heavy
E02	Over current event during
		• A dual-voltage motor is wired
	deceleration	incorrectly
		Note: The L100 will over current trip
E03	Over current event during
		at nominally 200% of rated current
	acceleration
E04	Over current event for	• DC braking power(A_54) set too
	other conditions	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	CPU error	• Built-in CPU had internal error
E22
E12	External trip	• [EXT] input signal detected
E13	USP (Unattended Start	• When (USP) was enabled, an error
	Protection)	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

9