Qualstar XLS Series, Техническое и сервисное руководство

Страница: 246 / 366

14.5 Replacing Light Curtain Sensors
14-12
501610 Rev. 07-01-19
MEM Light Curtain:
Shown in Figure 14-8 , the light curtain assembly for the MEM
includes PCBAs and cables in four locations at the bottom of the cabinet and four
locations at the top of the cabinet.
Important: Unlike in the LRM, the emitters in the MEM are at the
top, while the detectors are at the bottom.
•
Left access emitters (top)
•
Left door emitters (top)
•
Right access emitters (top)
•
Right door emitters (top)
•
Left access detectors (bottom)
•
Left door detectors (bottom)
•
Right access detectors (bottom)
•
Right door detectors (bottom)
Bottom light curtain
sensors
Carousel controller
Left access
detectors
Right access
detectors
Left door
detectors
Right door
detectors
Top light curtain
sensors
Left access
emitters
Right access
emitters
Left door
emitters
Right door
emitters
Figure 14-8 Block diagram of the light curtain assembly in the MEM