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

7 Digital Operator/Panel Operator7.2.3 Zero-point Search Mode (Fn003)7.2.3 Zero-point Search Mode (Fn003)CAUTION• Forward run prohibited (P-OT) and reverse run prohibited (N-OT) signals are disabled during zero-pointsearch mode operations using Fn003.The zero-point search mode is designed to perform positioning to the zero-point pulse (phase-C) position of theencoder and to clamp at the position.This mode is used when the motor shaft needs to be aligned to the machine.Execute the zero-point search without connecting the motor shaft with the machine.For aligning the motorshaft with the machineThe speed for executing the zero-point search is 60 min -1 .The following conditions must be met to perform the zero-point search operation.• If the Servo-ON input signal (/S-ON) is ON, turn it OFF.• Release the Servo-ON signal mask if the parameter Pn 50A.1 is set to 7, and the servo has been set toalways be ON.Follow the procedure below to execute the zero-point search.StepDisplay afterOperationDigital Operator Panel Operator Description1 Press the DSPL/SET or MODE/SET Key to selectDSPLSET(DSPL/SET Key)MODE/SET(MODE/SET Key)the utility function mode.2 Press the UP or DOWN Key to select the Fn003.Note: The enabled digit blinks.3 Press the DATA/ENTER Key once, or DATA/SHIFTDATAENTERKey for more than one second, and the display willbe as shown on the left.4 Press the SVON or MODE/SET Key.JOGSVONThe servo turns ON.MODE/SET(SVON Key)(MODE/SET Key)5 When the parameter is set to Pn000.0 = 0 (default),pressing the UP Key will rotate the motor in the forwarddirection. Pressing the DOWN Key will rotatethe motor in the reverse direction. When the parameteris set to Pn000.0 = 1, the rotation direction of themotor is reversed.6(DATA/ENTER Key)Display blinks.DATA(DATA/SHIFT Key)(Press at least 1 s.)When the motor zero-point search is completed, thedisplay blinks.At this moment, the motor is servo-locked at thezero-point pulse position.7-10