User Manual

Table Of Contents
Brushless Motor Connections and Operation
98 Advanced Digital Motor Controller User Manual V2.0, July 8, 2019
Hall Sensor Wiring
Hall sensors connection requires 5 wires on the motor:
Ground
Sensor A Output
Sensor B Output
Sensor C Output
+5V power supply
Sensor outputs are generally Open Collector, meaning that they require a pull up resistor
in order to create the logic level 1. Pull up resistor of 4.7K ohm to +5V are incorporated
inside all controllers. Additionally, 1nF capacitors to ground are present at the controllers
input in order to remove high frequency spikes which may be induced by the switching at
the motor wires.
Input
Buf
fer
+5V Out
GND
4.7K
10nF
HA, HB, HC
FIGURE 8-3. Hall sensor inputs equivalent circuit
Both 120 degrees and 60 degrees Hall sensors spacing, are supported (see “HPO” in the
command reference section). Hall sensors can typically be powered over a wide voltage
range. The controller supplies 5V for powering the Hall sensors.
Important Notice
120 degrees Hall sensor spacing is by far the most common. Use 60 degrees only if
that is specified in the motor’s documentation or label.
Unless specified otherwise in the datasheet, Hall sensor connection to the controller is
done using Molex Microfit 3.0 connectors. These high quality connectors provide a reliable
connection and include a lock tab for secure operation. The connector pin-out is shown in
the controller model’s datasheet.
In several controller models, the Hall inputs can be alternatively mapped to digital inputs
on the I/O connector. This makes it possible to use the hall sensors for rotor commutation,
and SSI sensors for other purposes at the same time (see “MLX” in the command ref-