Delta Electronics manual Fault Code InformationVFD-S Series

Chapter 6 Fault Code InformationVFD-S Series

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 heatsinks
	Heat sink temperature too high
			and check for possible dirty heat sink fins.
		4.	Check the fan and clean it.
		5.	Provide enough spacing for adequate
			ventilation. (See chapter 2)
	Low voltage	1.	Check whether the input voltage falls within the
	The AC motor drive detects		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-T
	value.		(for 3-phase models) without phase loss.
	Overload
	The AC motor drive detects	1.	Check whether the motor is overloaded.
	excessive drive output current.
		2.	Reduce torque compensation setting in Pr.7-02
	NOTE: The AC motor drive
		3.	Use the next higher power AC motor drive
	can withstand up to 150% of
			model.
	the rated current for a
	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.7-00.
	Overload 2	1. Reduce the motor load.
		2. Adjust the over-torque detection setting to an
	Motor overload.
			appropriate setting (Pr.6-03 to Pr.6-05).
	GFF hardware error	Return to the factory.
	CC (current clamp)
	OC hardware error
		1.	Short-circuit at motor output: Check for
			possible poor insulation at the output lines.
		2.	Torque boost too high: Decrease the torque
	Over-current during		compensation setting in Pr.7-02
		3.	Acceleration Time too short: Increase the
	acceleration
			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 insulation at the output line.
	Over-current 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.

6-2 Revision August 2008, SE09, SW V2.61