Page – 40/155 AF6ZP0CA – COMBIAC0 & ACE0 2uC – User Manual
5.2.5 Connection of a sin/cos sensor
When the PMSM is of the BLAC type (when turning its shaft it produces
sinusoidal electromotive force at its terminals), it is necessary to install an
absolute sin/cos sensor. At the first key-on, an auto-teaching procedure has to be
performed so to acquire the sensor signals.
A25 +5V/+12V Positive power supply.
A5 GND Negative power supply.
A18 SIN Sine signal.
A21 COS Cosine signal.
Connections of a sin/cos sensor.
U VERY IMPORTANT
It is necessary to specify the type of sensor used in terms of power supply,
electronic output and number of pulses per revolution, because the logic
unit and the software must be set in the correct way by Zapi.
5.2.6 Connection of Hall sensors
When the PMSM is of the BLDC type, it must be controlled with a six steps
inverter (trapezoidal waves). A PMSM is a BLDC when, by turning its shaft
lightened, the electromotive force between two motor terminals is of trapezoidal
shape.
To control BLDC motor with Zapi inverter, it is necessary to three Hall sensors.
Hall sensors power supply can be +5 or +12 V.
A25 +5V/+12V Positive power supply.
A5 GND Negative power supply.
A13 HS1 Hall sensor 1.
A14 HS2 Hall sensor 2.
A18 HS3 Hall sensor 3.
Connection of Hall sensors.
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