41
Glentek Inc., 208 Standard Street, El Segundo, California 90245, U.S.A. (310) 322-3026
SMA8105, SMA8205, and SMA8305 MANUAL
6.7 Resolver Alignment:
Note: Glentek motors with built-in resolvers are factory aligned. Consult a Glentek
applications engineer prior to attempting a resolver realignment. Failure to do so may void the
warranty.
Note:Consult a Glentek applications engineer before aligning a non-Glentek motor/resolver.
Some motor/resolvers require procedures other than that described here.
Note:Dip-switches S3-1, S3-2, S3-3 and S3-4 allow the converter to be operated in one of
eight modes. The first six modes set the number of motor "poles". One pole corresponds to
one magnet, thus a motor with two "north" and two "south" magnets has four poles. The
number of electrical revolutions is equal to one-half the number of poles. An electrical
revolution refers to the arc-length the motor will rotate when one complete sine-wave is
applied. Therefore, a four-pole motor has two electrical revolutions and requires two
sine-waves to make one mechanical (shaft) revolution. The significance of this is, any motor
with more than one electrical revolution will have more than one electrical "index" (0
o
position), while there is only one mechanical index. From an electrical viewpoint, any index
may be used, however from a mechanical viewpoint, using a different electrical index may
alter the mechanical index by as much as 180
o
from its previous position. This will show
itself as a change in where the encoder index (channel C) pulse occurs.
Note that the emulated encoder has an index per mechanical (shaft) revolution.
Of the remaining two modes, the INDEX is used to generate an index output and is used for
resolver alignment.
Motor:
S3-1
S3-2
S3-3
S3-4
2 Pole
ON
ON
ON
ON
4 Pole
ON
ON
ON
OFF
6 Pole
ON
ON
OFF
ON
8 Pole
ON
ON
OFF
OFF
10 Pole
ON
OFF
ON
ON
12 Pole
ON
OFF
ON
OFF
Zero
ON
OFF
OFF
ON
Index
ON
OFF
OFF
OFF
Содержание SMA8105
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