Sigma-II Series SGM*H/SGDH USER'S MANUAL - Esco Drives ...

7 Digital Operator/Panel Operator7.2.7 Manual Offset-adjustment of Motor Current Detection Signal (Fn00F)7.2.7 Manual Offset-adjustment of Motor Current Detection Signal (Fn00F)The adjusting range of the motor current detection offset is -512 to +511.To adjust the offset, perform the automatic adjustment (Fn00E) first.And if the torque ripple is still big after the automatic adjustment, perform the manual adjustment.IMPORTANTIf this function, particularly manual adjustment, is executed carelessly, it may worsen the characteristics.When performing manual adjustments, run the motor at a speed of approximately 100 min -1 , and adjust theoperator until the torque monitor ripple is minimized. (Refer to 9.5 Analog Monitor.) Adjust the phase-Uand phase-V offsets alternately several times until these offsets are well balanced.StepDisplay afterOperationDigital Operator Panel Operator Description1 Press the DSPL/SET or MODE/SET Key to select theDSPLSET(DSPL/SET Key)MODE/SET(MODE/SET Key)utility function mode.2 Press the UP or DOWN Key to select Fn00F.Note: The enabled digit blinks.3 Press the DATA/ENTER Key once, or DATA/SHIFTDATAENTERKey for more than one second, and the display will be(DATA/ENTER Key)as shown on the left (phase U).DATA(DATA/SHIFT Key)(Press at least 1 s.)4 Press the LEFT or RIGHT or DATA/SHIFT Key forless than one second to display the phase-U offsetamount.DATA(DATA/SHIFT Key)(Press at least 1 s.)5 Press the UP or DOWN Key to adjust the offset. Carefullyadjust the offset while monitoring the torque referencemonitor signal.6 Press the LEFT or RIGHT or DATA/SHIFT Key forless than one second.The display shown on the left appears.DATA(DATA/SHIFT Key)(Press at least 1 s.)7 Press the DSPL/SET or MODE/SET Key.DSPLSETThe display shown on the left appears (phase V).(DSPL/SET Key) MODE/SET(MODE/SET Key)8 Press the LEFT or RIGHT or DATA/SHIFT Key forless than one second to display the phase-V offsetamount.DATA(DATA/SHIFT Key)(Press at least 1 s.)9 Press the UP or DOWN Key to adjust the offset. Carefullyadjust the offset while monitoring the torque referencemonitor signal.10 Press the LEFT or RIGHT Key or DATA/SHIFT Keyfor less than one second.The display shown on the left appears.DATA(DATA/SHIFT Key)(Press at least 1 s.)11 When the offset adjustment completes, press theDATAENTERDATA/ENTER Key once, or DATA/SHIFT Key forDATA(DATA/ENTER Key) (DATA/SHIFT Key) more than one second.(Press at least 1 s.)The display returns to the utility function mode displayFn00F.7-14