1139300
Shadow 8 User Manual
2-4
Installation and Checkout
The safety distance is calculated using a formula that incorporates the stopping time of your
press. You must mount your light curtains slightly beyond this calculated distance to ensure
that Shadow 8 is able to stop the press before an operator’s hand reaches the hazardous area.
OSHA and ANSI Requirements
OSHA regulations, ANSI standards, and CSA mandate that all machine safeguarding devices,
including Shadow 8, be located at the correct safety distance from the pinch point. OSHA
regulation 1910.217 governs the mounting of infrared light curtains to protect mechanical
power presses. The OSHA formula contained in this regulation has been used as a guide in
other applications as well since there has been no well-known formula for safety distance
which governs general machine guarding.
Wintriss, however, recommends that you use the formula contained in ANSI standard B11.1-
2009. This standard has been developed specifically for guarding of mechanical power
presses, and the formula contained in B11.1-2009 represents a new consensus on the proper
installation of light curtains. The standard should be used as a guide in other applications as
well.
For complete information on OSHA regulation 1910.217 and ANSI standards B11.1-2009
and B11.19-2003, see Appendix D.
OSHA and ANSI formulas are explained below. If you need additional assistance in
calculating the safety distance, call Wintriss Tech. Support.
OSHA Safety Distance Formula
OBSERVE THE CORRECT SAFETY DISTANCE
• Calculate the safety distance carefully, following the instructions below, and mount your light
curtain heads at least the calculated distance from the hazardous area.
• Mount your light curtain heads at least 7.5 in. (191 mm) from the hazardous area regardless of
the calculated safety distance.
• Be sure your value for Ts includes the response times of all devices that react to stop the press.
If your measurement of stop time does not include response time of the press control, light
curtain, and any other devices that react to stop the press, the safety distance will be too short.
• Enabling floating blanking increases the depth penetration factor (Dpf) and, therefore, will
increase your safety distance. Enabling fixed blanking may also increase Dpf and safety distance.
Failure to comply with these instructions will result in death or serious injury.
USE BRAKE MONITOR TO CHECK STOPPING TIME
Use a brake monitor where a Shadow 8 light curtain is installed 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.
DANGER
!
DANGER
!
Содержание Shadow 8
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