Toshiba VF-AS1 instruction manual CPU2

	!				E6581301!
		(Continued)
		Error	Description	Possible causes	Remedies
		code
				Some items indicated on the motor	•Make sure that all items on the motor nameplate
				nameplate are not entered correctly.	are entered correctly.
			Motor constant	•Base frequency ￿￿￿
		￿￿￿￿		•Base frequency voltage 1 ￿￿￿
			setting error	•Motor rated capacity ￿￿￿￿
				•Motor rated current ￿￿￿￿￿
				•Motor rated speed ￿￿￿￿
			Inverter type	•Is circuit board (or main	•When board has been replaced, input ￿ for
		￿￿￿￿￿		circuit/drive circuit board)	￿￿￿.
			error	replaced?
			Analog input	•Overrated voltage is applied to	•Apply voltage within the rated voltage.
		￿￿￿￿￿	terminal	analog input.
			overvoltage
				•The signal from system is not	•Please check if the sequence is normal or not.
				inputted into input terminals.	•Please set ￿￿￿ or ￿￿￿ as the input terminal to
				•The input terminal function (￿￿￿,	use.
		￿￿￿￿￿	Sequence error	￿￿￿) is not set up.	•Please set up 0.0, when you do not use
				•A value other than 0.0 is specified	system-supporting sequence.
				for ￿￿￿￿, although the brake
				answer function is not used.
				•Disconnection of encoder circuit.	•Check connection of encoder.
		￿￿￿￿￿	Encoder error	•The encoder is not connected	Connect encoder correctly.
				correctly.	•Check whether the setting of ￿￿￿￿ matches the
					phase-A and phase-B connections of the encoder.
				•Speed error (Inverter error,	•Check the setting of ￿￿￿￿ ~ ￿￿￿￿
				Encoder error)	•Check connection of encoder.
				•The deceleration time ￿￿￿ is too short.	•Increase the deceleration time ￿￿￿.
		￿￿￿￿￿	Speed error	•Over speed by overvoltage limit	•In the case of overvoltage limit operation, install a
			(Over speed)	operation	dynamic braking resistor or increase the
					deceleration time ￿￿￿.
				•Using braking function in not	•Operation in connect a motor.
				connect a motor
				•Braking down of a wire for VI/II	•Check VI/II input signal.
			Terminal input	input signal.
		￿￿￿￿￿		•Terminal circuit board comes off	•Install the control terminal board to the inverter.
			error	and falls
				•P24 overcurrent	•Check P24 terminal short circuit to CC or CCA.
			Abnormal	•An error arises during CPU2	•Contact your Toshiba distributor.
		￿￿￿￿￿	CPU2	communication.
			communication
				• Output voltage / Output frequency	• Set Base frequency voltage 1 ￿￿￿ and Base
				ratio is too high compared to motor	frequency ￿￿ in accordance with motor rating.
				rating.	• When operating a motor in V/f control mode
				• It was run in vector control mode	selection ￿￿=￿,￿,￿,￿ or ￿, follow section 6.22,
				(￿￿=￿,￿,￿,￿ or ￿) without	and then set the parameters (Auto-tuning)
				setting parameters (Auto-tuning)	concerning the motor.
				concerning the motor.	• If the inverter is tripped during deceleration
		￿￿￿￿￿	V/f control error	• Motor was in over-excitation state	because of V/f control error (￿￿￿￿) when
				during deceleration.	￿￿￿￿ (Over voltage limit operation) is set to 2 or
				• Motor constant 1 (Torque boost)	3, decrease the value for ￿￿￿￿ (Regenerative
				￿￿￿￿ is too large.	over-excitation upper limit)..
				• Motor was started under the brake	• If the inverter is tripped during low frequency,
				closed.	decrease the value for ￿￿￿￿.
					• If the inverter is tripped during braking, make the
					brake release timing early.
		￿￿￿￿￿	CPU1 fault	•A software error occurs in the	•Contact your Toshiba distributor.
				control CPU.
13		￿￿￿￿￿	Abnormal logic	•An abnormal voltage is applied to	•Check the signal given to the logic connected with
			input voltage	the control logic input terminal.	the input terminal.
		￿￿￿￿￿	Option 1 error	•Option card 1 is defective.	•Contact your Toshiba distributor.
				(Installed option at lower side)
		￿￿￿￿￿	Option 2 error	•Option card 2 is defective.	•Contact your Toshiba distributor.
				(Installed option at upper side)
				•A deviation error occurs during	•Check connection of encoder.
				stop position retaining control.	•Adjust the proportional P gain ￿￿￿￿.
		￿￿￿￿￿	Stop position	•The stop position adjustment	•Increase ￿￿￿￿.
			retaining error	range specified with ￿￿￿￿ is too
				narrow.
				•Creeping speed is too fast.	•Lower the creeping speed.

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M-4