Finding phase order for Hall commutation -30deg. and 60deg. Hall sensors format.

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Finding phase order for Hall commutation

30° Hall sensors format:

For 30° Hall sensors there is only one sequence that will result in a successful operation of the motor with the amplifier. The plot shows the Hall sensors sequence when rotating the motor in CCW direction (view in front of the shaft). Please note that sensor A is at high level 60° before sensor B, and 120° before sensor C.

2.	Re-connect the Hall sensors in the right order. See the following table:

Feature	SBA terminals	Hall sensors 5
6	16	14
7	24	65
8	23	20
22 (+15V)	15 (+13V)	Supply
21	17	Common

3.	Do not connect the motor leads - leave them open for the following tests.

4.	Connect a two channels scope as follows:

	Channel 1:
	GND	- to the circuit common of the amplifier.
	Input signal	- to the Hall sensor A terminal.
	Channel 2:
	Channel 2 (GND)	- to motor phase B.
	Input signal	- Input signal to motor phase C.

5.	Rotate manually the motor in CCW direction (view in front of the output shaft). If the signals you observe in the scope are coherent (see following plots), the phases selection done under 4 is correct. If not, select another pair of motor phases until you get the required result.

6.	Connect motor phase A to phase A terminal, motor phase B to phase B terminal and motor phase C to phase C terminal.


	Correct pair of sensor / phase	Wrong pair of sensor / phase

60° Hall sensors format:

1.	Connect the Hall sensors and their supply to the amplifier according to the following table.

Feature	SBA terminals	Hall sensors 5
6	16	14
7	24	65
8	23	20
22 (+15V)	15 (+13V)	Supply
21	17	Common

2.	Do not connect the motor leads - leave them open for the following tests.

3.	Connect a two channels scope as follows:

	Channel 1:
	GND	- to the circuit common of the amplifier.
	Input signal	- to the Hall sensor A terminal.
	Channel 2:
	Channel 2 (GND)	- to motor phase B.
	Input signal	- Input signal to motor phase C.

4.	Rotate manually the motor in CCW direction (view in front of the output shaft). If the signals you observe in the scope are coherent (see following plots), the phases selection done under 3 is correct. If not, select another pair of motor phases until you get the required result

5.	Repeat step no. 3 but this time with the Hall sensor B terminal.

	Channel 1:
	GND	- to the circuit common of the amplifier.
	Input signal	- to the Hall sensor B terminal.
	Channel 2:
	GND	- to motor phase A.
	Input signal	- Input signal to motor phase B.

6.	Rotate again the motor in CCW direction. If you receive the same result as in step 4 then the connection of the Hall sensors is right and you have the right definition of all the motor phases. If you have a negative result replace the Hall sensors leads between the B and C terminals.


	Correct pair of sensor / phase	Wrong pair of sensor / phase