Finding the Common-Shared Phase

Or rather, we are tring to configure the firmware to use the correct MOSFET half-bridge as the common-shared phase

Prerequisites:

• Hydra firmware is installed
• you understand how to use CLI mode for configuration
• you have a multimeter and knows how to measure voltage

Setup your measurement like this:

Using the CLI, run the command hwtest, and it will ask you to choose a test type, press the p key.

Pressing the keys 1 to 9 will adjust turn on the currently selected phase, with 9 being maximum power and 1 being minimum power. Pressing 0 will turn it off.

Pressing the - or = will change the which one of the three phases is being used.

With the multimeter connected as shown, first press 9, then press - or = until the multimeter detects a voltage.

Then press the ESC key to exit the test mode. The result will be displayed, and a phasemap value will be shown.

To save this value, use the command like phasemap <n>, where <n> is the number you just figured out.

There are only 3 possibilities, if none of these three possibilities worked then something is wrong.