YASKAWA SERVOPACK Sigma 7S Series Supplementary Manual

Contents

1.1 Speed Control1.1.2 Operation Examples for Changing the Motor Direction1-81.1.2 Operation Examples for Changing the Motor DirectionThis section describes examples of using the /SPD-D (Motor Direction Input) signal in combina-tion with zero clamping and internal set speed control.This functionality is provided only in the Σ-7-Series SERVOPACKs with Analog Voltage/PulseTrain References.Operation Example for Changing the Motor Direction andZero ClampingThis section provides an example of changing the motor direction without changing the polarityof the speed reference voltage by using the /SPD-D (Motor Direction Input) signal.* Pn501 (Zero Clamping Level): Used with a Rotary Servomotor.Pn580 (Zero Clamping Level): Used with a Linear Servomotor.Note: The soft start function is used for the acceleration/deceleration time of the speed reference./ZCLAMP /SPD-DPolarity of Analog Speed Reference VoltagePositiveZero Clamping Levelor Lower ((Pn501(Pn580))*NegativeRotation Direction Operating Status Rotation DirectionOFF OFF CCW Speed Control CWOFF ON CW Speed Control CCWON OFF CCW Servo lock(clamped to zero) CWON ON CW Servo lock(clamped to zero) CCWReleasedOFFApplied AppliedONAppliedOFF ON OFF ONPn501(Pn580)Released ReleasedZero clamping/ZCLAMP input signal/SPD-D input signalSpeed referenceinput voltageReference voltageMotor speedSERVOPACK internalspeed referencePn501(Pn580)