YASKAWA F7 User Manual

Also see for Varispeed f7: Connection manual Programming manual User guide Instruction manual User manual

Contents

Diagnostics & Troubleshooting 6 - 4Table 6.1 Fault Displays and Processing (continued)DigitalOperator Display Description Cause Corrective ActionDEVSpeed DeviationExcessive Speed DeviationDetected when F1-04 = 0 to 2 and in FluxVector control method A1-02 = 3.The speed deviation is greater than thesetting in F1-10 for a time longer than thesetting in F1-11.The load is locked. Reduce the load.The acceleration ordeceleration time is too short.Lengthen the acceleration timeand deceleration time.The load is too large. Check the mechanical system.The settings in F1-10 andF1-11 are not appropriate forthe application.Check the settings in F1-10 andF1-11.Braking mechanism isengagedCheck that the brake is releasedwhen using brake (motor).Encoder wiring and/or encodersettings (F1 group) areincorrectCheck for proper encoder wiringand verify the parameter settingsare correct.EF0Opt External Flt Option Board External Fault An external fault condition ispresent.Check for an external condition.Verify the parameters.Verify communication signal.EF3Ext Fault S3External Fault at Terminal S3 - S8Detected when terminals S3 - S8 (H1-01 toH1-06) are programmed for external faultfunction that stops the Drive using ramp tostop, coast to stop, or fast stop.An external fault condition ispresent that is connected to amulti-function digital input.Eliminate the cause of theexternal fault condition.EF4Ext Fault S4EF5Ext Fault S5EF6Ext Fault S6EF7Ext Fault S7EF8Ext Fault S8E5SI-T WDT Err<3021>SI-T Watchdog ErrorConsistency error of received control data.Synchronization error betweenmaster controller and Drive forcontrol data.Check the communicationstiming such as communicationscycle.Refer to SI-T manual for details.E-15SI-F/G Com ErrSI-F/G Communication Error DetectedA communication error is detected when a runcommand or frequency reference is set fromthe SI-F/G Option Card (b1-01=3, b1-02=3)and communication is lost.Communication has been lostto the SI-F/G option cardconnected and b1-01=3 and/orb1-02=3.Check the communicationsignals.Check the settings of b1-01 andb1-02.Check the setting of F6-01.Check the host side (master)communication configuration.