Telemetry

Airspeed est — m/s

Setpoint — m/s

Freq cmd — Hz

Output freq — Hz

Current — A

DC bus — V

Output V — V

Status —

Fault —

Tunnel Control

— m/s

— Hz

RUN REV FAULT

Slider sets the airspeed and applies on release · Space stops · VFD setup: 02.00 = 3 (freq from RS485), 02.01 = 3 (run cmd from RS485), 09.00 = 1 (address), 09.01 = 1 (9600 baud), 09.04 = 4 (RTU 8-E-1).

0.00 m/s set

22.2 0

Live Charts

Airspeed Calibration

VFD Freq (Hz)	Airspeed (m/s)

Measured with a Fluke anemometer for this tunnel's motor + prop · setpoints interpolate linearly between points · stored in this browser.

Wind Tunnel Control Panel: a browser-based Modbus RTU master for Delta VFD-EL inverter drives over USB-RS485, with calibrated airspeed setpoints, live telemetry and strip charts. JavaScript and a Chromium browser (Chrome / Edge) with Web Serial are required.