User Manual EM303B General Purpose Inverter Thank you for purchasing EM303B series inverter. Document No.: 31010032 Version No.:104 Issue Date: 11/2015 EM303B is a general purpose vector control inverter. An induction motor with the help of EM303B canpossess fast speed response and torque control ability as a DC motor which makes the motion control system stable, precise,and quick. Main Features: 1. SVC (Sensorless vector control):Torque control accuracy: 5% rated torque. Speed Preface control accuracy: ±0.2% rated synchronous speed. 2. VVF (Vector decoupling based VF control): The steady performanceis the same as that in SVC. 3. Wide speed regulation range, load capacity at low frequency:
SVC/0.5Hz/150% rated load, VVF/1.0Hz/150% rated load. 4. Optimized current and voltage protection algorithm ensures that motor can accelerate/deceleratein 0.1S. 5. AVR function makes output voltage stable at grid voltage fluctuation. 6. Load disturbance compensation ensures failure-free operation of motor. 7. Auto-searching motor speed at restart smoothes thestart of motor without current over-shoot. 8. 2 acceleration/deceleration modes: linear and S curve. 9. The performance and stability are improved significantly with dual- CPU. It is the duty of any user to perform the appropriate, correct installation or configuration of the optional parameters of the devices.
Neither SINEE nor its distributors shall be responsible or liable for misuse of the information contained herein or mismatching the inverter with the motor. In the interests of commitment to a policy of continuous development and improvement, SINEE reserves the right to update the specification of the product or its performance, or the content herein without notice. More updates and information are available at www.sineedrive.com . 1