User Manual EM303B General Purpose Inverter 5.2 Trial Operation Precautions 5.2.1 Turningon the Power Checks before power-on: Voltage of power supply:3-phase 380VAC, 50Hz Connect the input power supply cable to the input terminals R,S, and T of inverter Connect the output terminals U, V, and W of inverter to the input terminals of motor All control circuit terminals are connected to correct control device, and terminals shall be off. Motor is idling. Turn the power on after all above settings have been confirmed. 、 are the output terminals of inverter’s DC bus voltage, is ground terminal, PB is wiring terminal of braking resistor.
Any damage resulted from incorrect wiring shall not in warranty. 5.2.2 Check at Power-on After the inverter starts up, the present working status and parameters will be displayed on the keypad. See Chapter 9 if anything unexpected displayed on keypad. 5.2.3 Idling Operation When motor is idling without mechanical load, the inverter is in keypad or terminal control mode, try to run the motor. The idling trial operation procedures as shown in followings: 50 stably, no unexpected vibration or odd smell. 3. Turn off the power immediately if anything unexpected. 1. If idling check is normal, connect the drive system to load. 2.
Turn on the inverter by terminal or keypad, increase load directly, and monitoring the operation of system when connected to load. 3. Turn off the power immediately if anything unexpected. On-load Trial Operation Check Normal Operation Inverter can conduct basic operation such as normal start, operation, stop,forward/reverse, and etc. Otherwise, please check if input and start/stop function codesare accurately set. Basic Operation Advanced Operation Program After setting program operation codes, system can operate in monocycle or recycle mode. Please check program operation codes if anything unexpected.
Speed Operation Control PID Customer can set PID process control channel and PID regulator parameters to control industrial process according to the drive system demand. Operation Torque Control Control the output torque based on the input torque command value. Performance Setting The inverter will automatically detect motor’s rotational status at start, and switch to operation smoothly to reduce start-up shock. Speed Search S-Curve Mainly used for the drive system with big inertia and the application which is sensitive to acceleration, to reduce mechanical shock and avoid system vibration.
Acceleration/ Deceleration Input DC current to the running motor to generate brake torque before start-up or at stop, it makes the motor stop quickly. DC Brake Special Terminal EM303B provides multiple programmable input/output terminals which can connect external controller to satisfy various applications. Control