Toshiba VF-S9 manual Before making a service call Trip information and remedies

E6580757

13.Before making a service call

- Trip information and remedies

13.1 Trip 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 dealer.

[Trip information]

Error code	Communication	Problem		Possible causes				Remedies
	No.
	1	Overcurrent during	•	The acceleration time	is too short.	•	Increase the acceleration time		.
		acceleration	•	The V/F setting is improper.		• Check the V/F parameter.
			• A restart signal is input to the rotating			•	Use	(auto-restart) and
				motor after a momentary stop, etc.			(ride-through control).
			• A special motor (e.g. motor with a small			•	Increase the carrier frequency		.
				impedance) is used.
	2	Overcurrent during	•	The deceleration time	is too short.	•	Increase the deceleration time		.
		deceleration		(During deceleration)
	3	Overcurrent during	•	The load fluctuates abruptly.		• Reduce the load fluctuation.
		operation	•	The load is in an abnormal condition.		• Check the load (operated machine).
	5	Arm overcurrent at	•	A main circuit element is defective.		• Make a service call.
		start-up
	4	Overcurrent (An	•	The insulation of the output main circuit or		• Check the cables and wires for defective
		overcurrent on the		motor is defective.			insulation.
		load side at start-up)	•	The motor has too small impedance.
	A	Overvoltage during	•	The input 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 thyristor is connected
				to the same power distribution line.
			• A restart signal is input to the rotating			•	Use	(auto-restart) and
				motor after a momentary stop, etc.			(ride-through control).
	B	Overvoltage during	•	The deceleration time	is too short.	•	Increase the deceleration time		.
		deceleration		(Regenerative energy is too large.)		• Install a suitable dynamic braking resistor.
			•	(dynamic braking resistor activa-		•	Enable	(dynamic braking selec-
				tion) is off.			tion).
			•	(overvoltage limit operation) is off.		•	Enable	(overvoltage limit opera-
			• The input voltage fluctuates abnormally.				tion).
			(1) The power supply has a capacity of			• Insert a suitable input reactor.
				200kVA or more.
			(2) A power factor improvement capacitor is
										13
				opened or closed.
			(3) A system using a thyristor is connected
				to the same power distribution line.

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