4.2 Protection Sequence Design42Be sure to configure the external circuit so that the main power to the digital torque amplifiergoes OFF at alarm output.■ Servo ON InputSerial Input Signal: The basic connection method and for Servo ON (/S-ON) is displayedbelow. This is used to forcibly stop the servomotor in a “non-powered” state.Switches the motor between a powered and a non-powered state.Do not start/stop the motor by using the (/S-ON) signal. Always start/stop the motor with aninput command.ON State CN1–34, 35 is “closed”,CN1–34 is level “Low” Normal StateOFF State CN1–34, 35 is “open”,CN1–34 is level “High” Alarm State→ Input/S-ON CN1-14 Servo ONWhen ONCN1-14 is“L” levelSends power to the motor. This isthe normal RUN state. (this is calledthe 4state)Servo ONMotor “Powered”StateThe motor runsaccording to theinput signalsWhen OFFCN1-14 is“H” levelSets the motor to a “non-powered”state. Operation is not possible (thisis the Servo OFF state). Do notperform Servo OFF while the motoris running except during anemergency stop.Servo OFFMotor Non-PoweredStateOperation is notpossible24V Power+24V +24VINAmplifierCN1-13 3.3kΩPhotocouplerUpper-LevelDeviceS-ON CN1-14 5mA0VImportant
