AU720 high-frequency mode (published)
The AU720 specification publishes two output modes side by side: a low-frequency mode of 0–500 Hz and a high-frequency mode of 0–3,200 Hz, within the series' 0.75–500 kW envelope, and publishes its control set (V/F, SVC, FVC; carrier 0.8–16 kHz) alongside the two modes. See also the AU720 page.
The platform high-frequency line
The company's platform catalogue separately lists a high-frequency inverter line with a published rating reaching 800 kW; the listing's title states the 800 kW figure. It does not publish a frequency class for the line, so no frequency figure is printed for it. For model-level data for that line, send the motor's rated frequency, speed and power with your enquiry and ask for the data to be stated in the quotation.
Published output frequency ranges
| Published output range | Series and published figures |
|---|---|
| 0–400 Hz | AU320 output envelope (0–400 Hz on the published single-phase table) |
| 0–500 Hz | EV200 (0–500 Hz in vector and V/F control); EV510 vector range 0–500 Hz; AU8000 0–500 Hz; AU720 low-frequency mode |
| 0–3,200 Hz | AU720 high-frequency mode. A separate platform-listed high-frequency line reaches 800 kW as listed; for its model-level data, ask with your enquiry |
State the motor type (high-speed spindle, centrifuge, blower) and its nameplate frequency when you enquire — spindle applications are covered on the spindle VFD page.
The two headline numbers are different kinds of figure: the AU720's 3,200 Hz is a specification-table figure from the series documentation, while the 800 kW is a platform listing title figure for a separate line whose model-level data is not printed in the series documentation.
Motor considerations at high frequency
The AU720 documentation publishes its carrier frequency as 0.8–16 kHz, auto-adjusted according to load, alongside the two output modes. Beyond the figures printed in the series documentation, no motor-side requirements for high-frequency duty are published; selection is an enquiry item — state the motor's rated frequency, speed and power with the enquiry.
Frequently asked questions
What motor speed does 3,200 Hz give?
No single figure: 3,200 Hz is the AU720's published high-frequency-mode output limit, not a motor speed. State your motor's rated frequency, speed and power in the enquiry.
Is the 800 kW line the AU720?
No. The AU720's published envelope is 0.75–500 kW with a 3,200 Hz high-frequency mode. The 800 kW figure belongs to a separate high-frequency line in the platform catalogue; its model-level data is an enquiry item.
Send us your motor rating and application
Tell us the motor power, the supply voltage on site and what the drive will run — pump, fan, machine tool or lift. Minimum order is 1 piece on the main catalogue lines, as published on the platform store; ask for price and lead time for your model and quantity to be stated in the quotation. Email [email protected] or message us on WhatsApp.