Hall Sensor - Delta ASDA-A3 Series User Manual

Linear Motor

11.4 Hall sensor

The magnetic pole sensor, also known as the Hall sensor, can be used to detect the motor pole.
The servo drive must know the position of the motor magnetic field to efficiently actuate the motor
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and move the motor in the right direction. As shown in the following figure, the Hall sensor
generally sends three-phase signals. Currently, the ASDA-A3 only supports digital signals, and
analog signals are not yet supported. The Hall sensor divides the motor magnetic field from 0 to
360° by the three-phase signals into six blocks (1, 0, 1), (1, 0, 0), (1, 1, 0), (0, 1, 0), (0,1,1), and
(0,0,1), so that the servo drive can know the current position of the motor magnetic field. Before
using the linear motor, make sure it is equipped with the Hall sensor. If there is a Hall sensor, set
PM.003.Y to 1; otherwise, set PM.003.Y to 0. If you activate the motor identification process when
the linear motor is not equipped with the Hall sensor, the motor detects the magnetic pole in a
slight vibration and cannot function on the Z-axis mechanism without the spring installed or
balancing process.
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U phase V phase
Three-phase
back
electromotive
force of the
motor
Hall sensor
U phase
Hall sensor
V phase
Hall sensor
W phase
W phase
ASDA-A3