Banner AG4 Series Safety Laser Scanner
3.3.7 Reset (Start/Restart) Switch Location
The reset switch must be mounted at a location that complies with the warning below. If any hazardous areas are
not in view from the switch location, additional means of safeguarding must be provided. The switch should be protected
from accidental or unintended actuation (e.g., through the use of rings or guards).
A key-actuated reset switch provides some operator or supervisory control, as the key can be removed from the switch
and taken into the guarded area. However, this does not prevent unauthorized or inadvertent resets due to spare keys in
the possession of others, or additional personnel entering the guarded area unnoticed.
Resetting a safeguard must not initiate hazardous motion. Safe work procedures require a start-up procedure to be
followed and the individual performing the reset to verify that the entire hazardous area is clear of all personnel, before
each reset of the safeguard is performed. If any area cannot be observed from the reset switch location, additional
supplemental safeguarding must be used – at a minimum, visual and audible warnings of machine start-up.
3.3.8 Supplemental Safeguarding
As described in Sections 3.3.4 and 3.3.5, the Scanner components must be properly positioned such that an individual
cannot reach through the defined area and access the hazard point before the machine has stopped.
Additionally, the hazard cannot be accessible by reaching around, under, or over the defined area. To accomplish this,
supplemental guarding (mechanical barriers, such as screens or bars), as described by ANSI B11 safety requirements
or other appropriate standards, must be installed. Access will then be possible only through the defined area of the
Scanner or through other safeguarding that prevents access to the hazard (see Figure 3-11).
The mechanical barriers used for this purpose are typically called ―hard guarding‖; there must be no gaps between the
hard guarding and the defined area. Any openings in the hard guarding must comply with the safe opening requirements
of ANSI B11 or other appropriate standard.
WARNING . . . RESET SWITCH LOCATION
All reset switches must be:
• Outside the guarded area,
• Located to allow the switch operator full, unobstructed view of the entire guarded area while the reset is performed,
• Out of reach from within the guarded area, and
• Protected against unauthorized or inadvertent operation (such as through the use of rings or guards).
If any areas within the guarded area are not visible from the reset switch, additional safeguarding must be provided, as described by the
ANSI B11 series or other appropriate standards. Failure to do so could result in serious injury or death.
WARNING . . . THE HAZARD MUST BE ACCESSIBLE ONLY THROUGH THE GUARDED AREA
The installation of the Scanner must prevent any individual from reaching around, under, over or through the guarded area and into the
hazard without being detected. Mechanical barriers (e.g., hard guarding) or supplemental safeguarding may be required to comply with this
requirement, and is described by ANSI B11 safety requirements or other appropriate standards.
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