Mô tả của sự lựa chọn: Chọn Tải lên tất cả các tham số [1] để chuyển tất cả các giá trị tham số để LCP. Chọn Tải về tất cả các tham số [2] để chuyển các giá trị tham số cho đơn vị bảng điều khiển đã được kết nối. Chọn Download điện độc lập các thông số [3] nếu chỉ có các thông số điện độc lập sẽ được tải xuống. | VLT 2800 Series 120 Start delay START DELAY Value - sec. sec. Function This parameter enables a delay of the start-up time after the conditions for start have been fulfilled. When the time has passed the output frequency will start by ramping up to the reference. Select the mode of start delay in parameter 121 Start function. Description of choice Set the necessary time before commencing to accelerate. 121 Start function START FUNCTION Value DC hold during start delay time DC HOLD DELAY TIME 0 DC brake during start delay time DC BRAKE DELAY TIME 1 Coasting during start delay time COAST DELAY TIME 2 Start frequency voltage clockwise CLOCKWISE OPERATION 3 Start frequency voltage in reference direction VERTICAL oPeRATION 4 Function Choose the required mode during the start delay time parameter 120 Start delay time . Description of choice Select DC hold during start delay time 0 to energize the motor with a DC hold voltage during the start delay time. Set voltage in parameter 137 DC hold voltage. Choose DC brake during start delay time 1 to energize the motor with a DC brake voltage during the start delay time. Set voltage in parameter 132 DC brake voltage. Choose Coasting during start delay time 2 and the motor will not be controlled by the drive during the start delay time. The output of the inverter will be turned off. Choose Start frequency voltage clockwise 3 to obtain the function described in parameters 130 Start frequency and 131 Voltage at start during start delay time. Regardless of the value assumed by the reference signal the output frequency equals the setting in parameter 130 Start frequency and the output voltage will correspond to the setting in parameter 131 Voltage at start. This functionality is typically used in hoist applications. It is used in particular in applications in which a cone anchor motor is applied where the direction of rotation is to start clockwise followed by the reference direction. Select Start frequency voltage in .
