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Parameters
3.2.5.
This parameter is the number of electrical cycles of the motor/mechanical revolution for
brushless motors. Also known as the number of pole-pairs. For linear motors, this PRM:5
should be one. Refer to Table 3-5 for parameter settings.
Table 3-5.
3.2.6.
If the motor has Hall effects available (PRM:6=1), the controller uses the halls to
initialize the commutation table. If the hall signals are not available or are not recognized
by the controller, the user should set this value to 0. If this value is 0, the controller
attempts to initialize the motor by energizing the phases to a known rotor position and
then commutate via the encoder from this known value. The peak current used to
energize the phases is given in PRM:7. Refer to Table 3-6 for parameter (PRM:6)
settings.
If the user uses this method to initialize the motor on a linear stage, ensure that the stage
is not near a hardware limit.
Table 3-6.
This method will not work on vertical stages.
3-4
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PRM:5 Electrical Cycles/Mechanical Revolution
(POLE PAIRS)
Requires a reset (CTRL-D) before taking effect.
Settings for Electrical Cycles/Mechanical Revolution PRM:5
PRM:5
Default Value
Maximum Value
Minimum Value
Type
Units
PRM:6 Hall Effects Available (HALLS)
Requires a reset (CTRL-D) before taking effect.
Settings for Hall Effects Available PRM:6
PRM:6
Default Value
Maximum Value
Minimum Value
Type
Units
Aerotech, Inc.
BA SineDrive User's Manual
Settings
4
20
1
Long (32 bit)
-
Settings
1(Halls available)
1
0
Long (32 bit)
-
Version 1.4
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