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EZ-SCREEN
LS Safety Light Screen
5 Mechanical Installation
The EZ-SCREEN LS system performance as a safety guarding device depends on:
•
The suitability of the application
•
The proper mechanical and electrical installation and interfacing to the guarded machine
WARNING: Read this Section Carefully Before Installing the System
If all mounting, installation, interfacing, and checkout procedures are not followed properly, the Banner
device cannot provide the protection for which it was designed. The user is responsible for ensuring that
all local, state, and national laws, rules, codes, or regulations relating to the installation and use of this
control system in any particular application are satisfied. Ensure that all legal requirements have been
met and that all technical installation and maintenance instructions contained in this manual are followed.
The user has the sole responsibility to ensure that this Banner device is installed and interfaced to the
guarded machine by Qualified Persons
regulations. Failure to follow these instructions could result in serious injury or death.
5.1 Mechanical Installation Considerations
The two primary factors that influence the layout of the EZ-SCREEN LS system mechanical installation are the Safety
Distance (Minimum Distance) (see
safeguarding/eliminating pass-through hazards (see
include:
•
Emitter and Receiver Orientation
•
Adjacent Reflective Surfaces
•
Use of Corner Mirrors
•
Installation of Multiple Systems
WARNING: Position Components Carefully
The emitter and receiver must be positioned such that the hazard cannot be accessed by reaching over,
under, around, or through the sensing field. Additional and supplemental guarding may be required.
5.1.1 Calculating the Safety Distance (Minimum Distance)
Safety Distance (Ds), also called Minimum Distance (S), is the minimum distance required between the defined area and the
closest reachable hazard point. The distance is calculated so that when an object or a person is detected (by blocking a
sensing beam), the EZ-SCREEN LS sends a stop signal to the machine, causing it to stop by the time the object or person
can reach any machine hazard point.
The distance is calculated differently for U.S. and European installations. Both methods take into account several factors,
including a calculated human speed, the total system stopping time (which itself has several components), and the depth
penetration factor. After the distance has been determined, record the calculated distance on the Daily Checkout Card.
WARNING: Safety Distance (Minimum Distance)
The Banner emitters and receivers must be mounted at a distance from the nearest hazard such that an
individual cannot reach the hazard before cessation of hazardous motion or situation. This distance can
be calculated using the formulas in this section, as described by ANSI B11.19 and ISO 13855, and must
be greater than 100 mm (4 in) regardless of calculated value. Failure to establish and maintain the
minimum distance could result in serious injury or death.
4
A person who, by possession of a recognized degree or certificate of professional training, or who, by extensive knowledge, training and
experience, has successfully demonstrated the ability to solve problems relating to the subject matter and work.
28
4
, in accordance with this manual and applicable safety
Calculating the Safety Distance (Minimum Distance)
Reducing or Eliminating Pass-Through Hazards
www.bannerengineering.com - Tel: +1.763.544.3164
on page 28) and the supplemental
). Other considerations
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