Delta Electronics VFD-EL manual Fault Code Information and Maintenance

Chapter 6 Fault Code Information and Maintenance

Fault	Fault Descriptions		Corrective Actions
Name
		1.	Ensure that the ambient temperature falls
			within the specified temperature range.
		2.	Make sure that the ventilation holes are not
	Overheating		obstructed.
		3.	Remove any foreign objects from the
	Heat sink temperature too high		heatsinks and check for possible dirty heat
			sink fins.
		4.	Check the fan and clean it.
		5.	Provide enough spacing for adequate
			ventilation. (See chapter 1)
	Low voltage	1.	Check whether the input voltage falls within
	The AC motor drive detects		the AC motor drive rated input voltage range.
	that the DC bus voltage has	2.	Check for abnormal load in motor.
	fallen below its minimum	3.	Check for correct wiring of input power to R-S-
	value.		T (for 3-phase models) without phase loss.
	Overload	1.	Check whether the motor is overloaded.
	The AC motor drive detects
	excessive drive output current.	2.	Reduce torque compensation setting in
	NOTE: The AC motor drive		Pr.07.02.
	can withstand up to 150% of	3. Use the next higher power AC motor drive
	the rated current for a		model.
	maximum of 60 seconds.
		1. Check for possible motor overload.
		2. Check electronic thermal overload setting.
	Overload 1	3.	Use a higher power motor.
	Internal electronic overload trip	4.	Reduce the current level so that the drive
			output current does not exceed the value set
			by the Motor Rated Current Pr.07.00.
	Overload 2	1. Reduce the motor load.
		2. Adjust the over-torque detection setting to an
	Motor overload.
			appropriate setting (Pr.06.03 to Pr.06.05).
	CC (current clamp)
	OV hardware error
		Return to the factory.
	GFF hardware error
	OC hardware error
		1.	When the external input terminal (B.B) is
	External Base Block.		active, the AC motor drive output will be
			turned off.
	(Refer to Pr. 08.07)
		2.	Deactivate the external input terminal (B.B) to
			operate the AC motor drive again.

6-2 Revision August 2008, 2ELE, V1.02