Application:
These robust units are designed to detect shaft rotation, stoppage
or reversal and have applications in all industries employing
rotating machinery.
Their high reliability and negligible maintenance requirements
make them especially suited to materials handling systems in
continously operating plants.
Operation:
The rotation sensor incorporates a magnetic slip coupling which
induces rotation in a further magnet enclosed in a liquid filled
capsule. This carries the contact operating pin. As the shaft
rotates, the operating pin moves one or the other contact depending
upon the direction of rotation.
The exact point of contact operation depends upon the selection
of magnetic and fluid couplings and the adjustment of contact
spring pressure.
Increase of speed above the operating point causes the magnetic
and fluid couplings to „slip” without reducing contact pressures.
This makes the unit suitable for low speed detection and high
speed continous operation without damage.
Rotation sensors are suitable for direct drive from rotating shafts.
However, they must not be subject to end thrust or excessive
vibration. The three couplings shown in this leaflet are especially
recommended to cater for shaft misalignment and also to simplify
installation.
Where direct drive is not possible the sensors may be driven by
belt or chain drive; in this case the heavy duty bearing version
should be used to cater for the additional side thrust.
For conveyors the belt drive unit type „B” may be used. This is
driven by a plastic roller in direct contact with a rubber or textile
belt. An alternative rubber roller is available for roller conveyors.
Wiring Diagram:
Speed Selection - Types Available:
Mounting Brackets and Flanges:
Couplings:
Mounting Details and Ordering Codes:
Dimensions and Ordering Codes:
Dimensions:
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