A single-beam optical safety system may not be adequate as a primary guard as it can easily be defeated by crawling under or stepping over the single beam. However, these systems may be used in multiple pairs to provide flexibility and an alternative solution for low-resolution safeguarding
: Many times, a single-beam will be used as supplemental safeguarding behind or in conjunction with a primary safeguard
in order to provide additional detection capabilities. However, this type of system should never be used for finger or hand detection.
: The Dpf
is 1200 mm which accounts for an individual bending at the waist to reach over the top beam of the light screen
: Single-beam spacing requirements are essentially the same as that for multiple-beam systems used in torso detection.