GE VAT2000 Instruction Manual

Also see for VAT2000 Series: Instruction manual Instruction manual

Contents

3. Test Operation and Adjustment3-53-6-1 V/f control (constant torque) (C30-0 = 1),V/f control (variable torque) (C30-0 = 2) automatic tuning(1) Automatic tuningThe Auto-tuning for V/f control (constant torque) or V/f control (variable torque) can be performed intwo modes, basic or extended. The mode selection is allowed by parameter (B19-0). (Note 1, 2)1) B19-0 = 1: Mode 1: V/f control basic adjustment mode (Execution time: approx. 10 seconds).The drive automatically adjusts basic parameters, such as boost voltage and brake voltage. Inthis phase the motor does not rotate.The following parameters are automatically adjusted by executing Mode 1.Table 3-6-1Parameter No. NameA02-2A03-0B02-0, 1Manual torque boost settingDC brake voltageR1: Primary resistance2) B19-0 = 2: Mode 2: V/f control extended adjustment mode (Execution time: approx. 1min.). Use thismethod if the motor is completely unloaded only. (No load at motor shaft)The drive automatically adjusts parameters related to the slip compensation and max. torqueboost. In this phase the motor rotate.The following parameters are automatically adjusted by executing Mode 2.Table 3-6-2Parameter No. NameA02-2A03-0B02-0, 1A02-5A02-6Manual torque boost settingDC brake voltageR1: Primary resistanceSlip compensation gainMax. torque boost gain(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 1 or 2, the following cannot be selected.B19-0 = 3: Mode 3: Vector control basic adjustment modeB19-0 = 4: Mode 4: Vector control extended adjustment mode(Note 2) If the base frequency of the motor is applied on a motor exceeding 120Hz, select Mode 1(B19-0 = 1). Adjust the slip compensation gain (A02-5) and max. torque boost gain (A02-6)manually.