Toshiba VF-FS1 instruction manual Qhh

13

					E6581381
[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
	excess number of			is more than 4.	magnification H.
	digits			(The upper digits have a priority.)
UVQR	Instantaneous power		•	The coast stop function set with H	• To restart operation, reset the inverter or
	failure coast stop			(Instantaneous power failure coast stop)	input an operation signal again.
	function activated.			is 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.
M	Integral input power		•	Integral input power is more than	• Press and hold down the ENT key for 3
				999.99kWh.	seconds or more when power is off or
					when the input terminal function CKWH
					is turned on or displayed.
J	Integral output power		•	Integral output power is more than	• Press and hold down the ENT key for 3
				999.99kWh.	seconds or more when power is off or
					when the input terminal function CKWH
					is turned on or displayed.

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.

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