Web Processes
  Tension Control
  Edge Control
    Wide Cloth
    Heavy Rubber Sheet
  Hole Detection
  End Of Roll
  Tear Detection
  Wire Break Detection

Position Check
  Process Automation
    Machine Processing Check
    Car Wash
    Automatic Spraying
    Dish Inspection
    Automatic Door
    Filling With Multiple Ingredients
    Photo Finish
  Clearance Warning
    Large Area Clearance
    Die Casting
    Automatic Press
      Fixed Ejection Path
      Flying Ejection Path
    Automatic Extruder
    Tunnel Conveyor
    Fallen Bottle
    Protruding Loose Parts
    Vehicle Over Height Detector
    Converging Conveyors
  Product Inspection

Counting
  Automatic Delivery By Count
  Stacking To Count
  Awkward Gaps Or Timing
    Small Gap Between Parts
    High Speed Small Objects
    Short Dark Time
    High Speed Steel Sheets
  Awkward Materials Or Objects
    Transparent Objects
    Register Marks
    Foil Labels
    Laundry
    Metal Parts Though Chute
  Direction Detection
  Prescaling

Sorting
  Carton Routing
  Positional Board Sorting
  Sizing Potatoes
  Diverting Equal Batches
  Delayed Eject
    By Time
    By Count

Orientation
  Asymmetrical Containers
  Symmetrical Tubes
  Page Skew

Packaging
  Carton Sealing
  Fill By Weight
  Spacing Glue Deposits

Process Speed
  Void Detection
    Parts Interrupt Beam
    Parts Reflect Beam
  Jam Up Detection
    Conveyor Jam Up
    Jam Up Without Reflectors
    Jam Up With Delayed Restart
  Space Adjustment
  Product Under Speed
  Shaft Rpm

Detecting People
  Surveillance
  Teller Window Customer Detection
  Drive Through Customer Detection
  Restrooms
  Showers

Operate To Size
  Cut To Length
  Automatic Pallet Wrapping
  Trash Compactor
  Stack To Size
  Winding Roll To Length

Level Detection
  Dry Bin Level
  Liquid Level
  Clear Containers

Load Change

Common Circuits
  Standard Hookup
  Parallel Ac
  Programmable Controller
  Parallel Logic Dc
  Pulsed Alarm

Edge Control

Photoelectric sensors may be used to control the lateral positioning of cloth, belts, and other webs on rollers.

Photoelectric monitoring consists of two pairs of either through-beam or retro-reflective scanners positioned above and below one lateral edge of the web. One pair is positioned to pass a beam just inside the desired maximum position (normally obscured), while the other is positioned just outside (not normally obscured).

Corrections are instantly made when the web moves out of alignment. If the material interrupts the outside light beam, the control signals a mechanism to move the web away from this edge. When the material moves over, the light beam is again restored.

If the material lets the inside light beam strike the reflector, the mechanism moves the web towards the opposite edge.

Other Applications