EM303A general purpose inverter, ac drive , frequency inverter, variable speed drive, variable frequency drive

We offer different models ( from 0.75 - 400KW) with best quality, stable performance, long life at cheapest price. EM303A open loop frequency inverter Application: Applicable to most AC motor drive fields ( 0.75 – 400KW) , in all industries Features 1. Speed sensor less vector control technique; 2. Drive mode: V/ F and vector control 2-in-1 optional; 3. Speed / frequency / torque setting mode; 4. Auto recognition of motor’ s parameters; 5. Frequency control range: 0 - 600HZ 6. Speed regulation width: 1: 50( SV) , 1: 100( vector w/ o PG) 7. Speed control accuracy: + / - 0.5Hz 8. Starting torque: 150% / 1Hz ( SV) , 150% / 0.5Hz ( vector w/ o PG) 9. Overload current withstanding: 150% for 1 minute, 180% for 2 seconds 10. Auto voltage regulation - AVR 11. Built-in braking unit ( 0.75 - 15KW) , and independent B/ R 45KW available 12. Simple PLC function is available 13. RS485 interface: can realize master-slave control with multiple inverters 14. Support MODBUS RTU communication protocol; 15. 7 numeric input, 3 output ( 2OC + 1 relay) 16. 4 analog input, 2 analog output; can effectively avoid drift and interference of analog signal by special treatment; 17. Users can select the desired code to display and set; 18. Reference power: 0-10V / 0-20mA 19. Droop control satisfies the machine that is driven by multiple inverters 20. Pendulum frequency, specialized for textile and chemical fiber Industry that needs traverse and winding 21. 5-bit LED numeric keypad, can change to LCD upon request. 22. TI DSP ensures high speed and accuracy in complicated logic operation; 23. Independent heat sink with low noise design; 24. Sound protection against short-circuit, over current, over load, over voltage, lack phase, overheating or external fault etc. 25. Power supply: Single phase: 220V / 230V, 3-phase, AC 380V / 415V / 440V, 50/ 60Hz, ± 5% .