Toshiba VF-AS1 instruction manual If the motor does not run while no trip message is displayed

! E6581301!

13.3If the motor does not run while no trip message is displayed...

If the motor does not run while no trip message is displayed, follow these steps to track down the cause.

￿		YES :
	The motor does not run.
		NO :
	Is the 7-segment LED		Check the power supply
	extinguished?		and the MCCB.

Is power being supplied normally?

Supply the power normally.

		•Checkthecoolingfan.
		•Contact your Toshiba distributor.
Is ￿￿￿￿ blinking?	Main circuit power is undervoltage. Check the input voltage. If a DC
	reactor (DCL) is connected, check also its wiring.
	￿ For monitoring input voltage, refer to Section 8.2.1.

Is ￿￿￿ displayed?

Is any failure message displayed?

￿Refer to Section 13.1.

Are ￿￿￿￿ and a failure message displayed alternately?

• Check whether a control terminal circuit board is connected to the inverter.

•When sink logic is enabled (SW1: SINK), no connection is established between STandCC. Close the circuit between CC and the terminal to which the ST (standby) function on the control circuit terminal is assigned. ￿ Refer to section 7.2.1.

•When source logic is enabled (SW1: SOURCE), no connection is established between ST and P24. Establish a connection between P24 and the terminal on the control terminal board to which the ST (standby) function is assigned.

Track down and eliminate the cause of the failure and then reset the inverter.

￿For resetting, refer to Section 13.2.

The inverter is in the process of retrying. The retry function can be disabled by normal or emergency stop operation, or by turning off the inverter.

13

RUN key lamp lighted?

Is !"￿ displayed?

•When operation panel operation is selected ... Press the RUN key to start the operation.

•Check whether the operation panel operation frequency is set properly.

￿Refer to Section 3.2.2.

•If another operation mode is selected ... Change the setting of the command mode selection parameter ￿￿￿￿. ￿ Refer to Section 5.5.

•If the control panel operation mode is selected ... Change the setting of the command mode selection parameter ￿￿￿￿ to ￿.

￿Refer to Section 5.5.

•In other operation mode ... Check whether the external operation command is entered. Setup status of input terminals can be checked by the monitor. ￿ Refer to Section 8.1.

•Check setup contents of ￿￿￿￿ parameter (selection of operation to which priority is given when forward/reverse run commands are input simultaneously). ￿ Refer to Section 6.2.1.

•Check to see that the frequency setting signal is not set at zero.

•Check the settings of the frequency setting signal parameters ￿￿￿￿,

￿￿￿￿, ￿￿￿￿ and ￿￿￿￿. ￿ Refer to Section 5.5.

•Check the frequency setting signal points 1 and 2 settings.

￿Refer to Section 7.3.

•Check that the start-up frequency is not higher than the operation frequency. ￿ Refer to Section 6.7.

•Check that the frequency setting (preset-speed operation frequency, etc.) is not set at zero.

•Check that the motor is not under a too large load or not locked up. →Reduce the load if necessary.

Determine the cause, using the parameter display function and the status monitoring function.

￿Refer to Section 11 for the parameter display function or Section 8 for the status motoring function.

M-8