Toshiba VF-FS1 instruction manual Qr

							E6581381
		(Continued)
	Error code	Failure code	Problem		Possible causes		Remedies
	QR	000A	Overvoltage during	•	The imput voltage fluctuates abnormally.	•	Insert a suitable input reactor.
			acceleration	(1) The power supply has a capacity of
					200kVA or more.
				(2) A power factor improvement capacitor is
					opened or closed.
				(3) A system using a thyrister is connected
					to the same power distribution line.		Use H (auto-restart) and H
				•	A restart signal is input to the rotating	•
					motor after a momentary stop, etc.		(coast stop).
				•	There is possibility of output phase	•	Check the main circuit output line, motor,
					failure.		etc. for phase failure.
	QR	000B	Overvoltage during	•	The deceleration time FGE is too short.	•	Increase the deceleration time FGE.
			deceleration		(Regenerative energy is too large.)		Enable H (overvoltage limit
				•	H (overvoltage limit operation) is	•
					off.		operation).
				•	The input voltage fluctuates abnormally.	•	Insert a suitable input reactor.
				(1) The power supply has a capacity of
					200kVA or more.
				(2) A power factor improvement capacitor is
					opened and closed.
				(3) A system using a thyrister is connected
					to the same power distribution line.		Check the main circuit output line, motor,
				•	There is possibility of output phase	•
					failure.		etc. for phase failure.
	QR	000C	Overvoltage during	•	The input voltage fluctuates abnormally.	•	Insert a suitable input reactor.
			constant-speed	(1) The power supply has a capacity of
			operation		200kVA or more.
				(2) A power factor improvement capacitor is
					opened or closed.
				(3) A system using a thyrister is connected
					to the same power distribution line.
				• The motor is in a regenerative state
					because the load causes the motor to run
					at a frequency higher than the inverter
					output frequency.	•	Check the main circuit output line, motor,
				•	There is possibility of output phase
					failure.		etc. for phase failure.
	QN	000D	Inverter overload	•	The acceleration time ACC is too short.	•	Increase the acceleration time CEE.
				•	The DC braking amout is too large.	•	Reduce the DC braking amount H
				• The V/F setting is improper.			and the DC braking time H.
				•	A restart signal is input to the rotating	•	Check the V/F parameter setting.
					motor after a momentary stop, etc.	•	Use H (auto-restart) and H
				• The load is too large.			(coast stop).
						• Use an inverter with a larger rating.
	QN	000E	Motor overload	•	The V/F setting is improper.	•	Check the V/F parameter setting.
				•	The motor is locked up.	•	Check the load (operated machine).
				•	Low-speed operation is performed	•	Adjust QNO to the overload that the
					continuously.		motor can withstand during operation in a
				• An excessive load is applied to the motor			low speed range.
					during operation.
	*	0020	Over-torque trip	•	Over-torque reaches to a detection level	•	Enable H (over-torque trip
13
	QV				during operation.		selection).
						•	Check system error.
	QJ	0010	Overheat	•	The cooling fan does not rotate.	•	Restart the operation by resetting the
				• The ambient temperature is too high.			inverter after it has cooled down enough.
				•	The vent is blocked up.	•	The fan requires replacement if it does
				• A heat generating device is installed close			not rotate during operation.
					to the inverter.	•	Secure sufficient space around the inverter.
				•	The thermistor in the unit is broken.	•	Do not place any heat generating device
							near the inverter.
						• Make a service call.

*You can select a trip ON/OFF by parameters. (Continued overleaf)

M-2