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Parker Hannifin
Chapter 7 Troubleshooting 167
Phase Hall State
U V W Correct
Use SHALL1
– – + 1 6
– + + 5 2
– + – 4 3
+ + – 6 1
+ – – 2 5
+ – + 3 4
Table 51 Configuring Hall Sensors
Figure 50 illustrates the alignment of phase
s U, V, and W with Halls 1, 2, and
3 as viewed from the front of the shaft. The illustration assumes the following:
• Hall signals that are High equal
TRUE signals.
• Hall 1 is the least significant bit (LSB).
• Hall 3 is the most significant bit (MSB).
• There is one hall cycle and one electrical cycle per pole pair on the
motor.
Figure 50 Motor Terminal Voltages (back EMF) and Hall Sensor Signals