Delta Electronics AC Motor Drive VFD-G User Manual

Contents

Delta Electronics AC Motor Drive VFD-G User Manual Manual pdf 148 page image

Chapter 5 Troubleshooting |Revision July 2008, EG03, SW V1.06 5-75.10 Motor Speed cannot be ChangedMotor can run butcannot change speedYesYesYesYesYesYesYesYesYesYesNoNoNoNoNoNoNoNoNoNoCheck if the setting of themax. frequency is too lowCheck to see if frequency isout of range (upper/lower)boundariesModify the settingModify the settingYesNoYesIf the setting ofPr.05-17toPr.05-31is too highYesIf finished withexecutingPr.05-15If the setting ofPr.05-00 to Pr.05-14are the sameIs it in PLC modePress UP/DOWN keyto see if speed hasany changeIf there is any changeof the signal that setsfrequency (0~10V and0~1A)Check if the wiring betweenMI1~MI4 to DCM is correctCorrectwiringCheck if frequency foreach step is differentCheck if the wiring ofexternal terminal is correctChange frequencysettingCheck if accel./decel.time is set correctlyPlease set suitableaccel./decel. time byload inertiaMaybe AC motor drive has malfunction or misoperationdue to noise. Please contact DELTA.Change defectivepotentiometer