User Manual of EM730/EM730E Series Inverter the inverter will work at 0.00Hz within the duration of the forward and reverse dead zone (F00.22) and then in the opposite direction to the set frequency. See Fig. 7-10. Output frequenc y Time Duration of forward and reverse dead Duration of forward and reverse dead zone zone Fig. 7-10 Schematic Diagram of Duration of Forward/Reverse Dead Zone When reverse running is allowed, the running direction of the inverter depends on the status of the F/R terminal and the set value of F00.20.
If the set forward running direction of the inverter is inconsistent with the desired rotation direction of the motor, exchange any two of the output terminal wires (U, V, W) of the inverter, or set F00.20 to the opposite value. increase of the inverter. When the carrier frequency is higher than the default value and Increasing the carrier frequency can reduce the motor noise, but will lead to the heat increased by 1kHz, the load needs to be derated to some extent. Please set F00.24=1. The actual carrier frequency of the inverter will be adjusted automatically according to the actual situation.
The recommended relationship between the rated power and carrier frequency of the inverter is shown in Table 7-4. 144 Function Function Default Parameter description Unit Attribute code code name setting F00.23 Carrier frequency 1.0-16.0 (rated power of the inverter: less than 4.00kW) 1.0-10.0 (rated power of the inverter: 5.50-7.50kW) 1.0 - 8.0 (rated power of inverter 11.00 - 45.00kW) 1.0 - 4.0 (rated power of inverter 55.00 - 90.00kW) 1.0-3.0 (rated power of inverter: 110.00kW and above) kHz 4.0 (7.5 and below) /2.0 ●