Toshiba VF-S11 manual 

									E6581160
[Alarm information]		Each message in the table is displayed to give a warning but does not cause the inverter to trip.
	Error code			Problem			Possible causes		Remedies
	QHH			ST terminal OFF	•	The ST-CC circuit is opened.		•	Close the ST-CC circuit.
	OQHH			Undervoltage in main	•	The supply voltage between R, S and T is		•	Measure the main circuit supply voltage.
				circuit		under voltage.			If the voltage is at a normal level, the
									inverter requires repairing.
	TVT[			Retry in process	•	The inverter is n the process of retry.		•	The inverter is normal if it restarts after
					•	A momentary stop occurred.			several tens of senconds.
									The inverter restarts automatically. Be
									careful of the machine because it may
									suddenly restart.
	GTT			Frequency point	•	The frequency setting signals at points 1		•	Set the frequency setting signals at points
				setting error alarm		and 2 are set too close to each other.			1 and 2 apart from each other.
	ENT			Clear command	•	This message is displayed when pressing		•	Press the STOP key again to clear the
				acceptable		the STOP key while an error code is			trip.
						displayed.
	GQHH			Emergency stop	•	The operation panel is used to stop the		•	Press the STOP key for an emergency
				command		operation in automatic control or remote			stop.
				acceptable		control mode.			To cancel the emergency stop, press any
									other key.
	J/			Setting error alarm /	•	An error is found in a setting when data is		•	Check whether the setting is made
	NQ			An error code and		reading or writing.			correctly.
				data are displayed
				alternately twice
				each.
	JGCF/			Display of first/last	•	The first and last data item in the CWJ		•	Press MODE key to exit the data group.
	GPF			data items		data group is displayed.
	FD			DC braking	•	DC braking in process		•	The message goes off in several tens of
									seconds if no problem occurs. Note)
	FDZP			Shaft fixing control	•	Motor shaft fixing control is in process.		•	Normal if the message disappears when
									a stop command is entered (or the
									operation command is canceled).
	G			Flowing out of	•	The number of digits such as frequencies		•	Lower the fequency free unit
	G			excess number of		is more than 4.			magnification H.
										9
	G			digits		(The upper digits have a priority.)
	UVQR			Momentary power	•	The slowdown stop prohibition function		•	To restart operation, reset the inverter or
				failure slowdown		set with H (momentary power			input an operation signal again.
				stop prohibition		failure ride-through operation) is
				function activated.		activated.
	NUVR			Auto-stop because of	•	The automatic stop function selected with		•	To deactivate the automatic stop function,
				continuous operation		H was activated.			increase the frequency command above
				at the lower-limit					the lower-limit frequency (LL) + 0.2 Hz or
				frequency					turn off the operation command.
	KPKV			Parameters in the	•	Parameters are being initialized to default		•	Normal if the message disappears after a
				process of		values.			while (several seconds to several tens of
				initialization					seconds).
	G			Operation panel key	•	The RUN or STOP key is held down for		•	Check the operation panel.
				fault		more than 20 seconds.
					• The RUN or STOP key is faulty.
	CVP			Auto-tuning	•	Auto-tuning in process		•	Normal if it the message disappears after
									a few seconds.
Note) When the ON/OFF function is selected for DC braking (DB), using the input terminal selection parameter, you can judge
the inverter to be normal if “FD” disappears when opening the circuit between the terminal and CC.
	[Prealarm display]
	E		Overcurrent alarm				Same as QE (overcurrent)
	R		Overvoltage alarm				Same as QR (overvoltage)
	N		Overload alarm				Same as QN and QN (overload)
	J		Overheat alarm				Same as QJ (overheat)
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