1128500
WPC 2000 User Manual
3-20
Initialization, Setup, and Checkout
ANSI and OSHA Safety Distance Formulas
OSHA regulations and ANSI standards mandate that all machine safeguarding devices,
including Shadow light curtains and Two-hand controls, 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.
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. More variables are included in the ANSI than in the OSHA
formula, and the ANSI calculation is, therefore, more precise.
For complete information on OSHA regulation 1910.217 and ANSI standards B11.1-2009 and
B11.19-2003, see Appendix A.
Figure 3-9. Safety Distance: Distance between Pinch Point and Light Curtain
PRESS MAY NOT STOP BEFORE OPERATOR REACHES PINCH POINT
• Calculate the safety distance carefully according to the instructions below.
• Mount your light curtain heads at least the safety distance from the hazardous area. If a light
curtain is too close to the hazard, there may not be enough time for the press to stop before the
operator’s hand (or another object) reaches the hazard.
• Mount your Two-hand Control, if you are using it as a safety device, at least the safety distance
from the hazardous area. If the Two-hand Control is too close to the hazard, there may not be
enough time for the press to stop before the operator’s hand (or another object) reaches the
hazard.
• Call Wintriss Tech. Support if you are not sure how to calculate the safety distance.
Failure to comply with these instructions will result in death or serious injury.
pinch point
transmitter
Distance between
light curtain and
pinch point
One of light curtain's
invisible light beams
receiver
DANGER
!
Summary of Contents for wpc 2000
Page 91: ...1128500 WPC 2000 User Manual 2 64 Installation ...
Page 191: ...1128500 WPC 2000 User Manual 5 22 Troubleshooting ...
Page 209: ...1128500 WPC 2000 User Manual A 18 Extracts from OSHA and ANSI ...
Page 225: ...1128500 WPC 2000 User Manual G 6 Glossary ...
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