Wintriss SmartPAC 2, User Manual

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1128600 SmartPAC 2 with WPC 2000 Integration User Manual
A-14 Extracts from OSHA and ANSI
8.3.2 Installation, operation and maintenance
8.3.2.1
Exposure to the hazard(s) shall not be
possible by reaching over, under or around the
sensing field of the presence-sensing device.
Additional guards or safeguarding devices shall
be provided to protect those areas.
E8.3.2.1
The user should select a presence-
sensing device adequate to prevent individuals
from reaching over, under or around the sensing
field during the hazardous portion of the
machine cycle.
Additional safeguarding may be required in
conjunction with the device to meet this
requirement.
The effective sensing field shall be of adequate
height, width, and depth so that entry of the
individual into the hazard zone is detected.
If individuals can place themselves between the
sensing field and the hazard zone, additional
safeguarding should be used in conjunction with
the device to prevent the individual from
exposure to the hazard. It has been found by
practical application that this situation can occur
with as little as 75 mm (3”) depending on the
positioning (e.g., height) and the minimum
object sensitivity of the sensing field, and the
ability of the individual to lean against the
machine frame or guarding.
It should not be possible to climb on or walk on
the machine support structure to avoid detection
by the presence-sensing device when the
sensing field is orientated horizontally.
When an individual can pass through the
sensing field, it is considered perimeter guarding
(see also, the requirements of 6.5 and 8.3.2.4).
The electro-optical and area scanning
presence-sensing devices may fail to detect an
individual‘s presence due to reflective
workpieces or objects in the vicinity of the
device. Care should be used to ensure that
these reflections do not render the device
ineffective.
Some examples of reflective objects include, but
are not limited to:
• machine surfaces;
• tooling;
• work pieces;
• hand tools;
• auxiliary equipment;
• workholding tables and fixtures.
Testing each set-up for minimum object
sensitivity should be done with an appropriate
test rod, following the supplier‘s
recommendation.
Extracts from ANSI B11.19-2010 8.3
Standards Requirements Explanatory Information