GE VAT2000 Instruction Manual

Also see for VAT2000 Series: Instruction manual Instruction manual

Contents

3. Test Operation and Adjustment3-93-6-2 IM speed sensor-less vector control (C30-0 = 3) andIM vector control with speed sensor (C30-0 = 4) automatic tuning(1) Automatic tuningThe Auto-tuning for the IM speed sensor-less vector control or IM vector control with speed sensorcan be performed in two modes, basic or extended. The mode selection is allowed by parameter(B19-0). (Note 1)1) B19-0 = 3: Mode 3: Vector control basic adjustment mode (Execution time: approx. 30 seconds)The drive automatically adjusts basic parameters for vector control.The following parameters are automatically adjusted by executing Mode 3.Table 3-6-4Parameter No. NameB01-8B02-0, 1B02-2, 3B02-4, 5B02-6, 7No-load output voltageR1 : Primary resistanceR2 : Secondary resistanceLσ : Leakage inductanceM’ : Excitation inductance2) B19-0 = 4: Mode 4: Vector control expanded adjustment mode (Execution time: approx. 1 minute)This mode is selected for constant power range operation only. (Note 2)The following parameters are automatically adjusted by executing Mode 4.Table 3-6-5Parameter No. NameB01-9B02-0, 1B02-2, 3B02-4, 5B02-6, 7B34-0 to 7No-load output voltageR1 : Primary resistanceR2 : Secondary resistanceLσ : Leakage inductanceM’ : Excitation inductanceM variable compensation table(Note 1) The automatic tuning function (B19-0) cannot be used in modes other than control selectedwith the parameter (C30-0). When C30-0 is set to 3 or 4, the following cannot be selected.B19-0 = 1: Mode 1: V/f control basic adjustment modeB19-0 = 2: Mode 2: V/f control extended adjustment mode(Note 2) When the motor works under constant power operation, the excitation inductancefluctuation must be compensated.Assign the operation range to the reference speed table in B33-0 to 7.Note that the motor will rotate to the max. speed in this case, so take special care to safety.