What Is a BGS (Background Suppression) Sensor?

BGS stands for background suppression, and this type of reflective sensor operates on the principle of triangulation. Whereas normal diffuse-reflective type sensors operate by increasing or decreasing the received light amount, BGS sensors operate by determining distance, providing stable detection with advanced resistance to influences from object color, gloss, or tilting.

• The object's reflectance is low (the object is dark).
• The object is available in various colors.
• The distance between the object and the background is small (minimal step height).
• The object has a glossy surface.
• The object's detection surface is tilted.

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  Effective for objects with low reflectance

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  Effective for objects with various colors

While BGS ignores backgrounds located beyond the object, FGS mode (Foreground Suppression) uses light reflected from the background and detects an object when it interrupts the reflected light path. This enables stable detection of challenging targets, such as thin, dark objects and objects with uneven or glossy surfaces that are difficult to detect with BGS.

Note:

• A light-colored background is required when using FGS mode.
• FGS mode is referred to by different names depending on the series:
  ZA-B Series: FGS 1-point
  BGS-HL Series: Zone
  BGS-HDL Series: FGS