User Manual of EM730 Series Inverter ★ Correct selection of the inverter: The rated output current of the inverter is greater than or ★ The difference between the rated power of the inverter and that of the motor is usually equal to the rated current of the motor, taking into account the overload capacity. recommended not to exceed two power segments. ★ When a high-power inverter is provided with a low-power motor, the motor parameters must be entered accurately to prevent the motor from damage as a result of overload. The technical specifications of the EM730 series inverter are shown in Table 1-2.
Table 1- 2 Technical Specifications of EM730 Series Inverter 11 EM730-200-3 200 380 —— EM730-220-3 220 426 —— EM730-250-3 250 465 —— EM730-280-3 280 520 —— EM730-315-3 315 585 —— EM730-355-3 355 650 —— EM730-400-3 400 725 —— EM730-450-3 450 820 —— Item Specification Power supply Rated voltage of power supply Three-phase 340V-10% to 460V+10%, Single-phase/three-phase 200V-10% to 240V+10%; 50-60Hz ± 5%; voltage unbalance rate: Output Maximum output voltage The maximum output voltage is the same as the input power voltage. Rated output current Continuous output of 100% rated current Maximum overload current 150% heavy-duty rated current: 60s （185~450kw 140% heavy-duty rated current:
60s ); 120% light-duty rated current: 60s; 150% light-duty rated current: 10s; 180% light-duty rated current: 2s Basic control functions Drive mode V/F control (VVF); speed sensorless vector control (SVC) Input mode Frequency (speed) input, torque input Start and stop control mode Keyboard, control terminal (two-line control and three-line control), communication