1107200
Shadow VI User Manual
page 20
Chapter 2
Installation and Checkout
well. For complete information on OSHA regulation 1910.217 and ANSI standard
B11.1-2009, see the Appendix, found at the end of this manual.
Both the ANSI and OSHA formulas are explained below. If you need assistance in
calculating the safety distance, call Wintriss Tech Support.
The OSHA Safety Distance Formula
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.
•
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.
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.
The OSHA safety distance formula as specified in OSHA regulation 1910.217 is explained
below. As noted earlier, Wintriss recommends you use the American National Standards
Institute formula for calculating safety distance because it contains more factors that allow
you to calculate the safety distance more precisely. The ANSI formula is explained in the
next section.
Here is the OSHA safety distance formula as specified in OSHA 1910.217:
Ds = 63 inches/second x Ts
63 inches-per-second is the OSHA-recommended hand-speed constant.
Ds
is OSHA safety distance in inches
Ds = 63 x Ts
T
s
is the stopping time of the press (or other machine) in seconds, measured at approximately
90° of crankshaft rotation (or at maximum velocity).
T
s
must include: all components that are
involved in stopping the press; response time of the press control that activates the brake and
response time of the light curtain (30 ms for 6" through 24" models; 35 ms for 30" through
48" models; 40 ms for the 60" model); plus response time of other devices if also involved in
stopping the press.
Содержание Shadow VI
Страница 142: ...1107200 Shadow VI User Manual page 130 Appendix C Installation of Shadow VI WPC Control Board ...
Страница 144: ...1107200 Shadow VI User Manual page 132 Appendix D Replacement Parts ...
Страница 150: ......
Страница 151: ......
Страница 152: ......
Страница 153: ......
Страница 154: ......
Страница 155: ......
Страница 156: ......
Страница 157: ......
Страница 158: ......
Страница 159: ......