Toshiba VF-AS1 instruction manual Before making a service call Trip information and remedies

! E6581301!

13.Before making a service call - Trip information and remedies

13.1Trip causes/warnings and remedies

When a problem arises, diagnose it in accordance with the following table.

If it is found that replacement of parts is required or the problem cannot be solved by any remedy described in the table, contact your Toshiba distributor.

[Trip information]

Error	Description	Possible causes	Remedies
code
		•The acceleration time ￿￿￿ is too short.	•Increase the acceleration time ￿￿￿.
		•The V/f setting is improper.	•Check the V/f parameter setting.
		•A restart signal is input to the	•Use ￿￿￿(Auto-restart) and ￿￿￿ (Regenerative
		rotating motor after a momentary	power ride-though control).
￿￿￿￿	Overcurrent	stop, etc.	•Increase the carrier frequency ￿￿.
*￿￿￿￿￿	during	•A special motor (e.g. motor with a	•Decrease ￿￿ setting value.
	acceleration	small impedance) is used.	•Decrease ￿￿￿￿ (stall prevention level) to 130
		•Manual torque boost value (￿￿) is large.	as a guide.
			•Increase ￿￿ (carrier frequency) setting value if it
			is set at lower value (2kHz or less).
		•There is possibility of ground fault.	•Check the cable and the motor for ground faults.
￿￿￿￿	Overcurrent	•The deceleration time ￿￿￿ is too	•Increase the deceleration time ￿￿￿.
*￿￿￿￿￿	during	short. (in deceleration)	•Check the cable and the motor for ground faults.
	deceleration	•There is possibility of ground fault.
	Overcurrent	•The load fluctuates abruptly.	•Reduce the load fluctuation.
￿￿￿￿		•The load is in an abnormal	•Check the load (operated machine).
*￿￿￿￿	during fixed	condition.
	speed	•There is possibility of ground fault.	•Check the cable and the motor for ground faults.
[Note] ￿￿￿￿,￿￿￿￿,		•A main circuit elements is defective.	•Contact your Toshiba distributor.
￿￿￿￿ originate from		•Overheat protection is activated.	•Check operation of cooling fan.
causes other than those			•Check cooling fan control mode parameter
mentioned above.			￿￿￿￿.
*￿￿￿￿￿	U-phase arm	•A main circuit elements is defective	•Contact your Toshiba distributor.
	short-circuit	(U-phase).
*￿￿￿￿￿	V-phase arm	•A main circuit elements is defective	•Contact your Toshiba distributor.
	short-circuit	(V-phase).
*￿￿￿￿￿	W-phase arm	•A main circuit elements is defective	•Contact your Toshiba distributor.
	short-circuit	(W-phase).
		•The insulation of the output main	•Check the cables and wires for defective
		circuit or motor is defective.	insulation.
	Loaded side	•The motor has too small	•Selection of short circuit detection at starting
￿￿￿￿	overcurrent at	impedance.	parameter ￿￿￿￿.
	start time	•The drive circuit board in the	•If this error message appears when a motor is not
		inverter was damaged.	connected to the inverter, the inverter itself may
			be faulty, so contact your Toshiba distributor.
	Dynamic braking	•PB-PA/+ circuit is shorted.	•Check the impedance wiring for the resistor, etc.
	element	•A resistor with resistance smaller	•Contact your Toshiba distributor.
		than the minimum allowable	•Check if regenerative brake is connected.
	overcurrent
		resistance is connected.
￿￿￿￿	(200V-55kW or		•If regenerative brake is not necessary, set
		•Parameter ￿￿ was set to ￿ or ￿
	larger,	without connecting regenerative	parameter ￿￿ to ￿.
	400V-90kW or
		brake or with wire disconnected
	larger)
		(with dynamic braking).
		•The cooling fan does not rotate.	•Restart the operation by resetting the inverter
		•The ambient temperature is too	after it has cooled down enough.
		high.	•The fan requires replacement if it does not rotate
￿￿￿	Overheating	•The vent is blocked up.	during operation.
		•A heat generating device is	•Secure sufficient space around the inverter.
		installed close to the inverter.	•Do not place any heat generating device near the
		•The thermistor in the unit is	inverter.	13
		disconnected.	•Contact your Toshiba distributor.
		•An input signal is impressed at	•The motor is overheated, so check whether the
	Thermal trip	control input terminal PTG for	current flowing into the motor exceeds the rated
		optional add-on cards.	current.
	stop command
￿￿￿￿		•A thermal trip command (input
	from external	terminal function: ￿￿ or ￿￿) is
	device
		issued by an external control
		device.

*In the event one of the error codes ￿￿￿￿ to ￿￿￿￿ and ￿￿￿￿ to ￿￿￿￿ appears, in which case a main circuit component has most probably failed, the only way to reset the inverter is to turn power off and back on. (Continued overleaf)

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