Filtec FT-70c, Service And Technical Reference Manual

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FT-70 Fill Level Inspector Service Manual
6-4
Encoder Calibration Procedures
The encoder calibration method you will use is based upon
whether your production conveyor is variable speed or fixed
speed.
Variable Speed Conveyors
Variable speed conveyors require a high resolution encoder that is
coupled directly to the conveyor drive sprocket. This allows the
FT-70 to track containers and synchronize the rejection of defective
containers over a wide range of conveyor speeds and to use slat or
Proline rejectors. This method produces the best performance for
your FT-70.
Fixed Speed Conveyors
Fixed speed conveyors use the Line Speed Calibration Procedure
to synchronize your FT-70 and rejector. The Line Speed Calibration
Procedure allows an FT-70 that is not equipped with a High
Resolution Encoder to perform down can inspection on fixed
speed conveyor lines.
The Line Speed Calibration Procedure is limited to using only the
Proline rejector and a fixed speed conveyor production line control
system that does not allow the conveyor to stop while there are
containers in the inspection area (the area from the inspection
trigger to the rejector centerline).
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