1107200 Shadow VI User Manual
page 18 Chapter 2 Installation and Checkout
Calculating the Safety Distance
DANGER
!
INCORRECT SAFETY DISTANCE
• Calculate the safety distance carefully according to the instructions below, and mount your
light curtain heads at least this distance from the hazardous area.
• Mount your light curtain heads at least 7.5” (191 mm) from the hazardous area, regardless
of the calculated safety distance.
Failure to comply with these instructions will result in death or serious injury.
DANGER
!
INCORRECT SAFETY DISTANCE DUE TO BLANKING OR FLOATING WINDOWS
• Read “Chapter 3 – Fixed and Floating Blanking” before calculating the safety distance. This
chapter tells how to modify the safety distance when you use windows.
• Modify the safety distance calculated with the instructions below, as required.
Failure to comply with these instructions will result in death or serious injury.
DANGER
!
INCREASED SAFETY DISTANCE DUE TO BLANKING OR FLOATING WINDOWS
Modify the safety distance between the light curtain and the hazardous area according to the
instructions in this chapter and in Chapter 3, "Floating and Blanking Windows."
Failure to comply with these instructions will result in death or serious injury.
DANGER
!
INCORRECT SAFETY DISTANCE DUE TO LONGER RESPONSE TIME
Determine which model Shadow safety light curtains you have. Use the correct response
time for your model light curtain in your safety distance calculations. Safety depends on your
installing your light curtain at the correct safety distance from the hazardous area.
12” to 24” 30 ms response time
36” to 48” 50 ms response time
Failure to comply with these instructions will result in death or serious injury.
DANGER
!
STOPPING TIME TOO LONG
Use a brake monitor where a Shadow light curtain is used to protect operators whose hands
are routinely exposed to a hazardous area, as required by OSHA 1910.217 (c) (3) (5). A
brake monitor continually checks that the machine’s stopping time does not exceed a
predetermined limit.
Failure to comply with these instructions will result in death or serious injury.
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