6.7 Diagnosing and Resetting FaultsWhen a fault occurs and the drive stops, follow the instructions below to remove whatever conditions triggered the fault, thenrestart the drive.u Fault Occurs Simultaneously with Power LossWARNING! Electrical Shock Hazard. Ensure there are no short circuits between the main circuit terminals (R/L1, S/L2, and T/L3) or betweenthe ground and main circuit terminals before restarting the drive. Failure to comply may result in serious injury or death and will causedamage to equipment.1. Turn on the drive input power.2. Remove the cause of the fault and reset.Note: 1. To find out what faults were triggered, Check U2-02 (Fault History) to determine the faults that have been triggered.2. If the fault continues to be displayed after cycling power, remove the cause of the fault and reset.u If the Drive Still has Power After a Fault Occurs1. Look at the LED operator for information on the fault that occurred.2. Refer to Fault Displays, Causes and Possible Solutions on page 133.3. Reset the fault. Refer to Fault Reset Methods on page 146.u Viewing Fault History Data After FaultStep Display/Result1. Turn on the drive input power. The first screendisplays. STOP2. Press until the monitor screen is displayed.3. Press to display the parameter setting screen.4. Press and > until U2-02 (Fault History) isdisplayed.5. Press to view previous fault (here, EF3).u Fault Reset MethodsAfter the Fault Occurs ProcedureFix the cause of the fault, restart thedrive, and reset the fault Press on the digital operator.STOPFix the cause of the fault and reset viaFault Reset Digital Input S4.Close then open the fault signal digital input viaterminal S4. S4 is set fault reset as default (H1-04= 12)Fault Reset SwitchDriveS4 Fault Reset Digital InputSC Digital Input CommonIf the above methods do not reset the fault, turn off the drive main power supply. Reapplypower after LED operator display is out.ONOFF216.7 Diagnosing and Resetting Faults146 YASKAWA ELECTRIC SIEP C710606 31B YASKAWA AC Drive – J1000 Technical Manualhttp://nicontrols.com
