GE VAT2000 Instruction Manual

Also see for VAT2000 Series: Instruction manual Instruction manual

Contents

5. Control Input / Output5-6Table 5-3 Programmable sequence input functions (2)Symbol Name FunctionBUP Ratio interlockbias increaseBDW Ratio interlockbias decreaseIVLM Bias BUP/BDWselectionWhen IVLM is ON, the ratio interlock function increases or decreases thefrequency setting output by BUP or BDW functions. The motor increasesor decreases its speed according currently valid ramp rate.When IVLM turns OFF, the bias increase/decrease value will be clearedto zero, and BUP/BDW operation will be disabled.AUXDV Auxiliary driveselectionThe dual drive settings are validated with this signal.PICK Pick-up While this signal is ON, pick-up (flying start) operation is effected as soonas RUN or R RUN is ON.EXC Pre-excitation Pre-excitation is applied to the motor. Pre-excitation consist toestablishing only the flux in the motor without generating toque. This isuseful when high torque is required immediately at the start time.ACR ACR ACR operation is selected.PCTL P Control ASR control is changed from the PI control to the P control.LIM1 Drive torquelimitchangeoverWhen this function is ON, is possible to control the drive torque limit, byan analog input signal or by a serial transmission signal.LIM2 Regenerativetorque limitchangeoverWhen this function is ON, is possible to control the regenerative torquelimit, by an analog input signal or by a serial transmission signal.MCH Machine timeconstantchangeoverThis function allows ASR gain changeover from two machine timeconstant values.machine time constant 1 (A10-1) is available if MCH is OFF.Machine time constant 2 (B15-0) is available if MCH is ON.RF0 0 setting The speed setting is changed to 0 rpm.DROOP DroopingchangeoverDrooping function is validated. (B13-5)DEDB Dead bandsettingThe dead band setting of ASR is validated. (B14-0)TRQB1 Torque biassetting 1The torque bias input 1 is valid.TRQB2 Torque biassetting 2The torque bias input 2 is valid.PIDEN PID controlselectionThe PID control is validated. Useful function for slow processes control(Note) ASR: Automatic Speed RegulatorACR: Automatic Current Regulator