Toshiba VF-A7 Is input power Input power Correct?, Make a service call, Is LED on, RUN/STOP key

12.3 In the case motor does not run in spite of no trip message appearing ...

When the motor does not run in spite of no trip message appearing on the display, proceed to troubleshooting according to the following flowchart.

Motor does not run.

YES : NO :

Is 7-segment LED display turned on?

Check input power and MCCB.

Is input power	Input power
correct?	supply correctly.

Make a service call.

Is  blinking?

Main circuit power is undervoltage. If input voltage or DC reactor (DCL) voltage is low, check the connection.

For monitoring input voltage, refer to the section 8.1.

Is  blinking?

Control power is undervoltage. Check input voltage and connection of control power supply. (This is an option for the 22 kW or lower type.)

Is blinking?	･Circuit between ST and CC is open. Close the circuit between the
	terminal assigned as ST (standby) and CC of the control terminal
	board, (Refer to 7.2.1)
	･Change setting value of ST (standby) signal selection parameter
	. (Refer to 6.2.1)
Is trip indication appearing?
(Refer to 12.1.)	Investigate the cause of failure and remove the cause before
	resetting the inverter. For resetting, refer to the section 12.2.

and trip indication are appearing alternately?

The inverter is in retry operation. Retry operation discontinues if stop or emergency stop operation is done or power supply is cut off.

	･In case of control panel operation: Turn on the RUN key to continue operation.
Is LED on	･Check to see if control panel operation frequency is set or not. (Refer to 3.2.2)
RUN/STOP key	･In other operation mode: Change setting of control device selection parameter
	.(Refer to 3.2.1)
turned on?
	･In case of control panel operation: Change setting of control device
	selection parameter to "1". (Refer to 5.3.)
	･Setup status of input terminals can be checked by the monitor. (Refer to
	8.1.)
	･In other operation mode: Check to see if external operation command is
	input.
	･Check setup contents of parameter (selection of operation to
	which priority is given when forward and reverse run commands are input
	simultaneously). (Refer to 6.2.2.)
Is： appearing on		･Check to see if frequency setting signal is set at "0".
display?		･Check setup contents of frequency setting signal parameters
		, , and . (Refer to 5.3.)
		･Check setting of points 1 and 2 of frequency setting signal.
		(Refer to 7.3.)
		･Check to see if operation start frequency is set higher than operation
		frequency. (Refer to 6.7.)
		･Check to see if frequency (preset-speed operation frequency, etc.) is
		set at "0".
		･Check to see if the motor is loaded too heavily or locked. - Reduce
		load to the motor.

Check contents of parameters and indications appearing on the monitor.

For table of parameters and monitor indications, refer to the articles 10 and 8 respectively.

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