Shadow VI User Manual
1107200
Excerpts from OSHA Regulations and
Appendix A
page 103
ANSI Standards
Daily Tests in French and English
Extracts from ANSI B11.1-2009 8.6.3
Standards Requirements
Explanatory Information
8.6.3.16
(cont)
NOTE
-
Ts + Tc
is usually measured by a stop
time measuring device. See also ANSI B11.19,
Annex C and D.
Whenever the press-cycle STOP command or
stopping-performance monitor time or angle
setting is changed, the safety distance should
be recalculated. See also “stopping-
performance monitor” (6.12).
NOTE – No increase in safety distance is
required for fixed blanking applications if the
blanked area is entirely occupied by the material
or fixtures.
In some instances, the use of blanking does not
allow efficient production of certain piece parts.
Horizontal placement of the sensing field, so
that it detects the operator’s waist area, may
present a solution. In this application, the
operator may freely manipulate the workpiece
and operate the press as long as the operator
stands outside of the horizontal sensing field.
The sensing field should be located so that the
operator cannot reach the point-of-operation
prior to interrupting the sensing field and
completion of the stopping action. Where
possible, the sensing field should be of sufficient
depth to prevent the operator from standing
between the field and the point-of-operation.
See also ANSI B11.19, Annex C and D.
8.6.3.17
If the position of the device will allow
the operator or others to place themselves
between the sensing field and the point-of-
operation, additional means shall be provided in
conjunction with the device to prevent the
operator or others from exposure to the point-of-
operation hazard.
E8.6.3.17
Additional means may include
manual reset outside of the sensing field of the
device or additional barrier guards, safety mats,
light curtains or other devices.
Operator controls for each operator located
outside of the sensing field of the presence-
sensing device may be used.
As an alternative to the reset control and to
prevent an individual from stepping behind the
sensing field of a PSD, the maximum distance
between the light curtain and the machine
structure should not exceed 75mm (3 inches).
Supplemental safeguarding may be utilized to
eliminate a space greater than 75mm.
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