Hitachi series inverter manual Basic Error Codes

Error Codes

The L2002 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	Name	Probable Cause(s)
Code
E01	Over current event while at	• Inverter output was short-circuited
	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 L2002 will over current trip at
E03	Over current event during
		nominally 200% of rated current
	acceleration
E04	Over current event for other	• DC braking power(A054) set too high
	conditions	• 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 specified
		value, after 60 sec. in Stop Mode
E21	Inverter thermal trip	• Inverter internal temperature is above
		the threshold
E30	Driver error	• Inverter internal error, electrical noise
		at CPU-to-drive circuit interface.

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