No. (Hex.) Name Description Default (Range) A1-02 (0102) Control Method Selection Sets the control method for the drive application and the motor. 2 (0 - 8) Note: When you change the control methods, the parameter values specified by A1-02 and E3-01 [Motor 2 Control Mode Selection] are changed to their default values. 0 V/f Control Use this control method in these applications and conditions: For general variable-speed control applications in which a high level of responsiveness or high-precision speed control is not necessary. Applications in which more than one motor are connected to one drive When there is not sufficient data to set the motor parameters When it is not possible to do Auto-Tuning. The speed control range is 1:40. 1 V/f Control with Encoder Use this control method in these applications and conditions: For general variable-speed control applications in which a high level of responsiveness or high-precision speed control is not necessary. When there is not sufficient data to set the motor parameters When it is not possible to do Auto-Tuning. The speed control range is 1:40. 2 Open Loop Vector Use this control method for general variable-speed control applications in which high-precision speed control is necessary. In this control method, a feedback signal from the motor is not necessary to have high torque response and high torque when you operate the drive at low speeds. The speed control range is 1:200. 3 Closed Loop Vector Use this control method for general variable-speed control applications in which these qualities are necessary: A high level of responsiveness High-precision speed control up to zero speed High-precision torque control. A speed feedback signal from the motor is necessary for this control method. The speed control range is 1:1500. 4 Advanced Open Loop Vector This is a control method for induction motors. Use this control method for applications in which high-precision speed control is necessary. This control method has high speed and torque response and high torque when operating at low speeds. The speed control range is 1:200. 5 PM Open Loop Vector The drive controls an IPM motor or SPM motor in this control method. Use this control method for general variable-speed control applications in which a high level of responsiveness or high-precision speed control are not necessary. The speed control range is 1:20. 6 PM Advanced Open Loop Vector The drive can control an IPM motor in this control method. Use this control method for general variable-speed control applications in which high-precision speed control and torque limit are necessary. The speed control range is 1:20. The speed control range is 1:100 when n8-57 = 1 [HFI Overlap Selection = Enabled]. Note: The speed control range 1:100 is the momentary operation area. Correctly select the drive and motor capacity for continuous operation. 7 PM Closed Loop Vector The drive controls a PM motor in this control method. Use this control method for constant torque applications in which high-precision control with a PM motor is necessary. Also use this control method for general variable-speed control applications in which high torque response and high-precision torque control are necessary. A speed feedback signal from the motor is necessary for this control method. The speed control range is 1:1500. 8 EZ Vector Control The drive controls induction motors and PM motors in this control method. This control method uses an easier procedure to operate motors with more efficiency. Use this control method for derating torque applications. For example, fans and pumps.
