| OPERATION
The
Standard CEM-DR reversing drive package comprises a
single, unidirectional input shaft, a bidirectional
output shaft, and two integral electromagnetic clutches.
With the input continuously driven, the output shaft
is either decoupled from the input, or directionally
coupled to it by the selected action of the clutches.
Refer to the schematics above. For example, with the
input driven, and both clutches de-energized, the output
is free-wheeling. The excitation of Clutch #1 will cause
the output shaft to be coupled to the input in the same
angular direction as the input, and at the same speed.
Similarly, excitation of Clutch #2 will cause the output
and the input to be coupled, however, the output will
be driven in the opposite direction as the input. The
drive is internally protected against damage from mechanical
jams, or from accidental excitation of both clutches
simultaneously.
Normally,
the output shaft extends from the side opposite that
of the input shaft, at the one o’clock position, when
the package is viewed from the input shaft end as shown
in the drawing below. The drive also can be purchased
with a number of different shaft extension options.
Other options include dual output shafts, and output
or input shaft extensions on either, or both, sides
of the package. The dual output shaft option provides
a pair of coupled, counter-rotating shafts, capable
of rapid reversal upon command.
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