8.1.3 Procedure for Board Bring-up and Testing
The following list details the procedure for board bring-up and testing:
- Remove the motor connections from the board and power on the input DC supply. Make sure that a minimum of a 6-V DC input is applied and the 3.3 V is generated in the board.
- Program the MCU as detailed in Section 8.1.2.
- Remove the programmer, and switch off the DC input supply.
- Connect the inverter output to the motor winding terminals. Connect the position Hall sensor inputs to the connector J4, and make sure that the winding connection and Hall sensor connections match.
- Connect the POT at the interface J1 and set the speed reference.
- Use a DC power supply with current limit protection and apply 8-V DC to the board. If the Hall sensors and winding are connected properly in the matching sequence, then the motor will start running at a speed set by the POT.
- If the motor is not rotating and takes high current or rotates and draw distorted peak winding current waveform (proper waveform shape is as shown in Figure 31), then check the winding and Hall sensor connection matching and, if wrong, correct it.
- Adjust the POT voltage for change in speed.
- To change direction, switch off the DC input, close the jumper J2, and switch on the DC input.