Delta Electronics VFD-XXXM quick start Fault Codes, English-19

Fault Codes

Fault	Fault Descriptions		Corrective Actions
Name
		1.	Check whether the motors horsepower corresponds to the
			AC drive output power.
	Over current	2.	Check the wiring connections between the AC drive and
			motor for possible short circuits.
	Abnormal increase	3.	Increase the Acceleration time (Pr.10, Pr.12).
	in current.	4.	Check for possible excessive loading conditions at the motor.
		5.	If there are any abnormal conditions when operating the AC
			drive after short-circuit being removed, it should be sent back
			to manufacturer.
		1.	Check whether the input voltage falls within the rated AC
	Over voltage		drive input voltage.
		2.	Check for possible voltage transients.
	The DC bus voltage
		3.	Bus over-voltage may also be caused by motor regeneration.
	has exceeded its
			Either increase the decel time or add an optional brake
	maximum allowable
			resistor.
	value.
		4.	Check whether the required braking power is within the
			specified limits.
		1.	Ensure that the ambient temperature falls within the specified
	Overheating		temperature range.
		2.	Make sure that the ventilation holes are not obstructed.
	Heat sink
		3.	Remove any foreign objects from the heatsinks and check for
	temperature too
			possible dirty heat sink fins.
	high
		4.	Check the fan and clean it.
		5.	Provide enough spacing for adequate ventilation.
	Low voltage	1.	Check whether the input voltage falls within the AC motor
	The AC motor drive
			drive rated input voltage range.
	detects that the DC
		2.	Check whether the motor has sudden load.
	bus voltage has
		3.	Check for correct wiring of input power to R-S-T (for 3-phase
	fallen below its
			models) without phase loss.
	minimum value.
	Overload	1. Check whether the motor is overloaded.
		2. Reduce torque compensation setting in Pr.54.
	The AC motor drive
		3. Take the next higher power AC motor drive model.
	detects excessive
		NOTE: The AC motor drive can withstand up to 150% of the
	drive output current.
			rated current for a maximum of 60 seconds.
		1. Check for possible motor overload.
	Overload 1	2. Check electronic thermal overload setting.
	Internal electronic	3. Use a higher power motor.
	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.52.
	Overload 2	1. Reduce the motor load.
		2. Adjust the over-torque detection setting to an appropriate
	Motor overload.
			setting.

English-19