1128600
SmartPAC 2 with WPC 2000 Integration User Manual
A-16
Extracts from OSHA and ANSI
RF presence-sensing devices have sensing
fields that can vary due to:
• antenna(e) design;
• effects of adjacent machinery and equipment;
• field sensitivity adjustments; and
• environmental factors (such as humidity or
temperature).
Before the machine is used for production
purposes, the RF presence-sensing device
should be checked to ensure that the effective
field protects individuals at the safety distance.
8.3.2.4
The presence-sensing device shall
protect individuals from hazards by initiating an
immediate stop command to the machine
control system when the sensing field of the
device is interrupted during the hazardous
portion of the machine cycle. It shall require re-
initiation of the normal actuating means prior to
the start or continuation of motion of the
machine.
E8.3.2.4
When an individual can pass through the
sensing field of the presence-sensing device,
the device shall initiate an immediate stop
command to the machine control system and
shall require that the device or machine control
be manually reset before hazardous situation
can occur.
The operator should ensure that no individual is
in the safeguarded area before re-setting the
presence-sensing device or machine control
and initiating a hazardous situation
The reset function and devices shall comply with
6.5.
8.3.2.5
Indication that the sensing field is being
blanked shall be provided. For fixed blanking,
the blanked area shall be identified.
Supplemental safeguarding shall be provided to
prevent access to the hazard through the fixed
blanked area.
E8.3.2.5
The blanking function of an electro-
optical presence-sensing device desensitizes a
portion of the sensing field by disabling one or
more channels such that a specific interruption
is ignored. Electro-optical presence- sensing
devices can be provided with fixed or floating
blanking.
Floating blanking allows the blanked area to
move within the sensing field. When floating
blanking is enabled and the object sensitivity
increases, the sensing field must be placed at a
greater distance from the hazard, see 8.3.2.2
and Annex D and Figure D.1.
Extracts from ANSI B11.19-2010 8.3
Standards Requirements
Explanatory Information
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