GE VAT2000 Instruction Manual

Also see for VAT2000 Series: Instruction manual Instruction manual

Contents

3. Test Operation and Adjustment3-2The VAT2000 has several modes of control. Some of these include settings that must be made accordingto the power supply and motor constants before actually starting operation.The method to set VAT2000 basic operation is explained in this section.3-1 Control selectionThe VAT2000 has five modes of control, which can be selected with the parameter (C30-0).Refer to Appendix 1 Control Specifications Table for details.(1) V/f control (constant torque) (C30-0 = 1) : (Note 1)V/f control (voltage – frequency control in constant ratio)(2) V/f control (variable torque) (C30-0 = 2) : (Note 1)V/f control (voltage-frequency control in quadratic ratio respect to a variable torque load, such as afan or pump)(3) Speed sensor-less vector control for standard Induction Motors (C30-0 = 3)Speed or torque vector control of the IM is achieved without sensor(4) Speed sensor vector control for standard Induction Motors (C30-0 = 4) : (Note 2)Speed or torque vector control of the IM is achieved without sensor.This is used when a high speed accuracy or fast torque response is required.(5) Permanent Magnet drive control (C30-5 = 5) : (Note 3)Speed vector control for permanent magnet motors (brush-less type motors).The PM motors allow high-efficiency operation in respect to the standard Induction Motors(Note 1) The operation panel only displays the parameters required for each type control. For example,when the V/f control is enabled (C30-0 = 1 or 2) the drive will not display the dedicatedparameters for vector control(Note 2) An optional PCB (U2KV23DN1 or DN2) for IM speed detection is necessary. (Table 7-1.)(Note 3) An optional PCB (U2KV23DN3) for PM speed detection is necessary. (Refer to Table 7-1.)3-2 Selection of operation modeThe VAT2000 operates in both “Local” (from the operation panel) and “Remote” (from I/O terminals)modes. These modes can be changed with the + keys while the motor is stopped. Theselected mode is confirmed by the LCL LED on the operation panel. Refer to Section 4-1 for details.For Local Mode : LCL LED ONOperation is carried out from the operation panel.For Remote Mode : LCL LED OFFOperation is carried out with the terminal block TB1 input terminals.CAUTIONMake sure that there is no abnormal noise, smoke or odours at this time.If any abnormality is found, turn the power OFF immediately.