Toshiba VF-FS1 instruction manual If the motor does not run while no trip message is displayed

E6581381

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.

The motor does not run.

Is the 7-segment LED extinguished?

Is QHH displayed?

YES:

NO :

Check the power supply and the MCCB.	Supply the power
Is power being supplied normally?	normally.

Make a service call.

• The ST-CC circuit is opened. Close the circuit between CC and the terminal to which the ST (standby) function on the control circuit terminal is assigned.

• Check the setting of H (always active function selection). ⇒ See section 6.3.1.

Is any failure message	Track down and eliminate the cause of the failure and then reset the inverter.
displayed?	⇒ See section 13.2.
⇒ See section 1.3.1.
Are TVT[ and a failure	The inverter is in the process of retrying. The retry function can be disabled by normal
message displayed alternately?	or emergency stop operation, or by turning off the inverter.
Is the RUN key lamp lighted?	•	When operation panel operation is selected ... Press the RUN key to start the operation.
	•	Check whether the operation panel operation frequency is set properly.
		⇒ See section 3.1.2
	•	When another control mode is selected ... Change the setting of the operation control
		mode selection EOQF. ⇒ See section 5.3.
Is the RUN key lamp off?	•	When operation panel operation is selected ... Change the setting of the operation
		control mode selection parameter EOQF to 1. ⇒ See section 5.3.
	• You can check the setting of each input terminal on the monitor. ⇒ See section 8.1.
	•	When another control mode is selected ... Check whether the external operation
		command is entered.

Q displayed?

13

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

•Check the settings of the frequency setting signal parameters HOQF, H, H.

⇒See section 6.5.

•Check the frequency setting signal points 1 and 2 settings. ⇒ See section 6.5.

•Check that the start-up frequency is not higher than the operation frequency.

⇒See section 6.6.

•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.

⇒See section 11 for the parameter display function or section 8 for the status motoring function.

M-6