Datasheet

2.1. Power Supply Selection

There are two main ways to supply power to the board.

1. The first is to use the PC USB supply, and in this case the current you can give to the motor is limited by

the USB interface. In this mode the USB interface is not isolated.

2. The second is to use an external voltage DC source to supply the board.

The recommended operating voltage range is between 15Vdc and 48Vdc, max at 3Amps DC.

A power supply with more current could be used to increase the available for the motor. However it

recommended that the power MosFets are kept to a working temperature of approx. 60

C so that some

form of air cooling will be needed.

In this setting the USB communications interface will be isolated from the inverter.

The selection between the two possibilities is made using jumpers JP1 and JP2, as shown below.

Power supply Selection Jumpers (JP1 and JP2) configuration settings

Power supply Selection Jumpers (JP1 and JP2) location

Note: The figure shown above is with the jumpers in position 3 – 4

EXTERNAL SUPPLY SELECTION

USB SUPPLY SELECTION

JP2-1

JP1-1

JP2-4

JP1-3

JP1-4

JP1-6

JP2-6

JP2-3