Safe Torque Off 6-21AC30V series Variable Speed DriveTo run the drive:Ensure the STO Request contacts are closed.Press the DRIVE START button.To perform operational (not STO) stop:Press the DRIVE STOP button.Wait for the motor to come to rest.To invoke STO:Press the DRIVE STOP button.Wait for the motor to come to rest.Open the STO Request contacts simultaneously. The contactsmust remain open for the entire duration that STO is required:they must not be momentary action switches. The drive willconfirm via X10/05 that STO has been invoked by the lamp beingON.If the lamp is OFF, do not access the machine as a fault may bepresent.Note: if the STO Request contacts open while the motor isrotating, the motor will coast to rest (unless external forces act onit).MINIMUM STO IMPLEMENTATIONThis example shows the minimum connections required. To reset from STO requires that STO Request contacts are closed to permit normal driveoperation. The user must do a risk assessment to ensure that all safety requirements are met. The user must select and assess appropriate equipment.Note: all wiring shown is within the control cubicle.DRIVESTARTDRIVESTOPSTOREQUESTAC30V STO24VDCX13/02 X13/03 X10/01 X10/03 X10/06 X12/05X10/02 X10/04 X10/05 X12/06
