Alignment Procedure for Multi-Beam Track Electronics

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Alignment Procedure for Multi-Beam Track Electronics

Postby raceamerica » Fri May 11, 2018 4:28 pm

Models 5156LM/RM and 5167L/R track electronics at the start line have linked Stage and Guard Beams.

PROBLEM DESCRIPTION
Certain models of Dual and Tri Beam starting electronics contain logic circuit linking the alignment of the Stage Beams with the alignment of the Guard Beams. When a vehicle rolls into the Stage Beam, the tree will indicate staged by illuminating the Stage light. If the vehicle continues to roll forward and also blocks the Guard Beam, the logic circuit will turn the Stage light off indicating an illegal staging in that lane. If the vehicle rolls out of the Stage Beam and continues to block the Guard Beam, the logic circuit will continue to indicate an illegal staging condition. Starting line track electronics with this logic circuit require both beams to be aligned at the same time in order to function properly and indicate proper staging when only the Stage Beam is blocked. This requires care to be taken when aligning the start line track electronics.

SENSOR MODELS WITH LINKED STAGE AND GUARD BEAMS
Tri-Beam -- 5167L & 5167R
Dual Beam -- 5156LM & 5156RM

SETUP
Position the left emitter facing the left sensor, right emitter facing the right sensor. Connect the interface cables between the sensors and the timing system and power on the emitters.

GUARD BEAM ALIGNMENT
Place a solid object in front of the sensor’s Stage Beam fully blocking the Stage Beam from being detected by the Stage Sensor. Move the emitter around noting when the Stage light illuminates on the tree indicating the Guard Beam is aligned. Continue to move the emitter noting when the Stage light goes out indicating the Guard Beam is out of alignment and the outer edge of the detection area for the emitter. Position the emitter in the center of the detection area. With the Stage Beam still blocked, block the Guard Beam and note the Stage light on the tree will go out indicating the Guard beam is aligned properly.

STAGE BEAM ALIGNMENT
Remove the object from in front of the sensor’s Stage Beam and Guard Beam and the Stage light on the tree will go out if the Stage Beam is also aligned. Temporarily blocking the Stage Beam will illuminate the Stage light on the tree. With the Stage Beam blocked, temporarily block and unblock the Guard Beam. The Stage light on the tree will go out each time the Guard beam is blocked.

PRE-STAGE BEAM ALIGNMENT
Model 5167 have an additional Pre-Stage Beam. Once the Stage and Guard Beams are aligned, the Pre-Stage Beam will also be aligned. Test this by temporarily blocking the Pre-Stage Beam and the Pre-Stage light on the tree should illuminate. In the event the Pre-Stage Beams are not aligned, repeat the above Guard Beam alignment procedure ensuring the Pre-Stage light on the tree goes out when the Stage light illuminates.
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