Mounting Focus Light Curtains and Light Grids

Vertical Safety Light Curtains

A vertically mounted safety light curtain that is used as the primary safety device must be mounted so that the bottom beam is no higher than 300mm (12”) from the ground. Mounting heights above 300mm (12”) may require supplemental safeguarding to prevent crawling or ducking under the horizontal light curtain. The top beam must be no lower than 900mm for reach over applications and 1200mm (48”) for reach through applications. Mounting heights lower than this will require additional safeguarding.

Horizontal Safety Light Curtains

A horizontal safety light curtain that is used as the primary safety device must be mounted no higher than 300mm (12”) from the ground. Mounting heights above 300mm (12”) may require supplemental safeguarding to prevent crawling or ducking under the horizontal light curtain. The minimal length the safety light curtain can be 1200mm (48”) long.

The formula below is for mounting different resolutions from a horizontal surface.

Height = 15 x (Os - 50mm)

Height = 15 x (Os - 2”)

Note: Os represents the beam spacing.

Vertical Perimeter Safety Light Grids

A vertically mounted safety light grid must be mounted such that the bottom beam is no higher than 300mm (12”) from the ground. If the light grid is of only 2 beams then the second beam must be located 900mm (36”) from the ground. For a 3 or 4 beam system the top beam must be 1200mm (48”) above the ground.

Correctly Installed The operator cannot reach into the machine without actuating the Light Curtain.

Incorrect Installation Gap below the Light Curtain. The operator can reach into the machine without actuating the Light Curtain.

Correctly Installed Light Curtain complemented with a horizontal Light Curtain to detect the operator.

Incorrect Installation Gap above the Light Curtain. The operator can reach into the machine without actuating the Light Curtain.