Delta Electronics VFD-XXXM quick start English-20

Fault	Fault Descriptions		Corrective Actions
Name
		1.	Short-circuit at motor output: Check for possible poor
			insulation at the output lines.
	Over-current	2.	Torque boost too high: Decrease the torque compensation
	during		setting in Pr.54.
	acceleration	3.	Acceleration Time too short: Increase the Acceleration Time.
		4.	AC motor drive output power is too small: Replace the AC
			motor drive with the next higher power model.
		1.	Short-circuit at motor output: Check for possible poor
	Over-current		insulation at the output line.
	during	2.	Deceleration Time too short: Increase the Deceleration Time.
	deceleration	3.	AC motor drive output power is too small: Replace the AC
			motor drive with the next higher power model.
		1.	Short-circuit at motor output: Check for possible poor
	Over-current		insulation at the output line.
		2.	Sudden increase in motor loading: Check for possible motor
	during steady state
			stall.
	operation
		3.	AC motor drive output power is too small: Replace the AC
			motor drive with the next higher power model.
	Internal EEPROM	1.	Turn off the power.
		2.	Check whether the input voltage falls within the rated AC
	can not be
			drive input voltage.
	programmed.
		3.	Turn on the power.
	Internal EEPROM	1.	Check the connections between the main control board and
			the power board
	can not be read.
		2.	Reset the drive to the factory settings.
		1.	Input EF (N.O.) on external terminal is closed to GND. Output
	External Fault		U, V, W will be turned off.
		2.	Give RESET command after fault has been cleared.
		1.	Check if the motor is suitable for operation by AC motor
	Auto accel/decel		drive.
	failure	2.	Check if the regenerative energy is too large.
		3.	Load may have changed suddenly.
		When (one of) the output terminal(s) is grounded, short circuit
		current is more than 50% of AC motor drive rated current, the AC
		motor drive power module may be damaged.
	Ground fault	NOTE: The short circuit protection is provided for AC motor
		drive protection, not for protection of the user.
		1.	Check whether the IGBT power module is damaged.
		2.	Check for possible poor insulation at the output line.
	Communication	1.	Check the connection between the AC drive and computer
			for loose wires.
	error (see Pr.92)
		2.	Check if the communication protocol is properly set.
		1.	When the external input terminal (B.B) is active, the AC
	External Base		motor drive output will be turned off.
	Block.	2. Deactivate the external input terminal (B.B) to operate the AC
			motor drive again.
	OC hardware error	Return to the factory.

English-20