Toshiba VF-S11 manual E6581160

					E6581160
	(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.		(ride-through control).
QR	000B	Overvoltage during	• The deceleration time FGE is too short.	•	Increase the deceleration time FGE.
		deceleration	(Regenerative energy is too large.)	•	Install a dynamic braking resistor.
			• H (dynamic braking resistor) is off.	•	Enable H (dynamic braking
			• H (overvoltage limit operation) is		resistor).
			off.	•	Enable H (overvoltage limit
			• The input voltage fluctuates abnormally.		operation).
			(1) The power supply has a capacity of	•	Insert a suitable input reactor.
			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.
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	•	Install a dynamic braking resistor.
			because the load causes the motor to run
			at a frequency higher than the inverter
			output frequency.
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	9
			• 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.		(ride-through control).
				• 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.
QNT	000F	Dynamic braking	• The deceleration time is too short.	•	Increase the deceleration time FGE.
		resistor	• Dynamic braking is too large.	•	Increase the capacity of dynamic braking
		overload trip			resistor (wattage) and adjust PBR
					capacity parameter H.
*	0020	Over-torque trip	• Over-torque reaches to a detection level	•	Enable H (over-torque trip
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
			• The thermistor in the unit is broken.		inverter.
				• 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)

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