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ASDA-A3

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Linear Motor and Third-Party Motor

11.5.2 Checking the Hall sensor phase sequence

To check the phase sequence of the Hall sensor, set P0.017 to the monitoring variable -177 and

observe the change of phase sequence with P0.009. The bits of this monitoring variable are

(bit 3, bit 2, bit 1) = (W, V, U). The following figure shows the waveform monitored by the scope

when you manually move the linear motor. You can see the phase sequence in the cycle of

(1, 0, 1), (1, 0, 0), (1, 1, 0), (0, 1, 0), (0, 1, 1), and (0, 0, 1). When the motor reverses, the phase

sequence is also reversed. Incorrect phase sequence may cause the motor to go in the wrong

direction or even be out of control.

Note: for the monitoring variable -177, Bit 1 represents U phase, Bit 2 represents V phase, and Bit 3

represents W phase.

11

(1,0,1)

(1,1,0)

(1,0,0)

(0,1,1)

(0,1,0)

(0,0,1)

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