10-2Varispeed F7 Control MethodsDetails of the Varispeed F7-Series Inverter control methods and their features are provided in this section. Control Methods and FeaturesVarispeed F7-Series Inverters support the following four control methods, allowing the selection of a controlmethod to suit the required purpose. Table 10.1 provides an overview of the control methods and their fea-tures.Table 10.1 Overview and Features of Control MethodsControl Method V/f Control V/f Control with PG Open-loop VectorControl Flux Vector ControlConstant Setting A1-02 = 0(factory setting) A1-02 = 1 A1-02 = 2 A1-02 = 3Basic Control Voltage/frequencyfixed ratio controlVoltage/frequencyfixed ratio controlwith speed compen-sation using a PGCurrent vector con-trol without a PGCurrent vector con-trol with a PGMain ApplicationsVariable speed con-trol, particularly forcontrol of multiplemotors with a singleInverter and forreplacing existingInvertersApplications requir-ing high-precisionspeed control using aPG on the machinesideVariable speed con-trol, applicationsrequiring high perfor-mance without a PGon the motor side,and for replacingopen-loop vector con-trol of the previousVS-616G5.Very high-perfor-mance control with aPG on the motor side(simple servodrives,high-precision speedcontrol, torque con-trol, and torque limit-ing)PG Speed Control Board(Option) Not required. Required (PG-A2 orPG-D2). Not required. Required (PG-B2 orPG-X2).BasicPerfor-manceSpeed ControlRange *1 1:40 1:40 1:100 1:1000Speed Control Accu-racy*2 ±2 to 3% ±0.03% ±0.2% ±0.02%Speed Response *3 Approx. 1 Hz Approx. 1 Hz 5 Hz 40 HzMaximumOutput Fre-quencyCT 150 Hz 150 Hz 150 Hz 150 HzVT 400 Hz 400 Hz 400 Hz 400 HzStartingTorque*4CT 150%/3 Hz 150%/3 Hz 150%/0.5 Hz 150%/0 min−1VT 120%/3 Hz 120%/3 Hz 120%/0.5 Hz 120%/0 min−1300 Hz 300 Hz 300 Hz 300 Hz
