Danfoss VLT AutomationDrive FC 300 Instruction Manual

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Danfoss VLT AutomationDrive FC 300 Instruction Manual Manual pdf 46 page image

3-42 Ramp 1 Ramp-down TimeRange: Function:Size related [0.01-3600.00 s] Enter the ramp-down time, i.e. the deceleration time from the synchronous motor speed n s to 0RPM. Choose a ramp-down time so that no overvoltage arises in the inverter due to regenerativeoperation of the motor, and so that the generated current does not exceed the current limit set inpar. 4-18. The value 0.00 corresponds to 0.01 s in speed mode. See ramp-up time in par. 3-41.Par. 3 − 42 =tdec s x ns RPMΔref RPM4.3 Basic set-up parameters0-02 Motor Speed UnitOption: Function:This parameter cannot be adjusted while the motor is running.The display showing depends on settings in par.0-02Motor Speed Unit and par. 0-03RegionalSettings. The default setting of par.0-02Motor Speed Unit and par. 0-03Regional Settings dependson which region of the world the adjustable frequency drive is supplied to, but can be re-program-med as required.NOTE!Changing theMotor Speed Unit will reset certain parameters to their initial value.It is recommended to select the motor speed unit first before modifying otherparameters.[0] RPM Selects display of motor speed variables and parameters (i.e. references, feedbacks and limits) interms of motor speed (RPM).[1] * Hz Selects display of motor speed variables and parameters (i.e., references, feedbacks and limits) interms of output frequency to the motor (Hz).0-50 LCP CopyOption: Function:[0] * No copy[1] All to LCP Copies all parameters in all set-ups from the adjustable frequency drive memory to the LCP memory.[2] All from LCP Copies all parameters in all set-ups from the LCP memory to the adjustable frequency drive memory.[3] Size indep. from LCP copy only the parameters that are independent of the motor size. The latter selection can be usedto program several adjustable frequency drives with the same function without disturbing motordata.[4] File from MCO to LCP[5] File from LCP to MCOThis parameter cannot be adjusted while the motor is running.1-03 Torque CharacteristicsOption: Function:Select the torque characteristic required.VT and AEO are both energy saving operations.[0] * Constant torque Motor shaft output provides constant torque under variable speed control.4 How to ProgramVLT® AutomationDrive FC 300 InstructionManual4-8 MG.33.AC.22 - VLT® is a registered Danfoss trademark4