Specifications

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Publication S117-CA001A-EN-P
Presence Sensing Safety Devices
Safety Laser Scanner
2-82
Overview
General Principles
2-Opto-electronics
Safety Switches Operator
Interface
Logic Power
R
Principles of Operation
The SafeZone™ safety laser scanner operates on the principle of
diffuse reflection and the time flight of light. Pulses of Infrared light
are reflected off of a rotating mirror and are emitted over a 190° arc.
The diffuse reflection of light is received from an intrusion in the
preconfigured sensing field and processed to determine the location
and distance of the object from the SafeZone scanner.
Receiver
Sender
Exit
Receiver Path
Sender Path
At the time of the emission of Infrared light, an electronic stop watch
begins. The reflected light is then seen by the SafeZone scanner
and processed to determine the distance of the object from the
scanner.
Emitted Pulse
of IR Laser
Light
Start
Stop
The SafeZone safety laser scanner is well suited to industrial
applications and can be used in either vertical or horizontal
applications to detect the intrusion of personnel or objects into the
configured sensing field(s). This detection can result in an audible
alarm or warning light being activated to warn of the intrusion or if
the intrusion is in the safety field, the hazardous motion of
machinery can be stopped.
Stationary Horizontal Guarding—Single Field Set
Stationary Vertical Guarding
Note: Both the SafeZone singlezone and multizone can be used in
stationary horizontal or vertical guarding applications. The SafeZone
multizone has a safety field range of 5 m (16.4 ft) and up to four
configurable and switchable field sets. The SafeZone singlezone has
a safety field range of 4 m (13 ft) and a single configurable field set.
Measurement Range
Warning Field
(example)
Safety Field
Up to 49 m
Subject to
Object
Reflectivity
190°
Protective Field
(example)
Maximum
Protective Field
4 or 5 m
Configuration of the SafeZone’s warning and safety fields are
accomplished using the Safety Configuration and Diagnostic (SCD)
software supplied with each scanner. This Windows®-based
software allows easy configuration of irregularly shaped fields by
simply clicking and dragging points along the perimeter of the
particular zone to shape the contour of the perimeter of the warning
or safety field.
It is possible to mount the SafeZone safety laser scanner to create a
vertical safety field that provides access detection to a hazardous
area. It is necessary to configure “contour as a reference,” which
monitors specific areas at the perimeter of the safety field. Contour
as a reference must be configured for vertical applications as this
configured feature prevents the manipulation of the scanner.
It is possible to configure a warning field and a safety field in front of
machinery or equipment to protect personnel from accessing the
area where hazardous motion takes place. The SafeZone safety
laser scanner is required to be mounted at a particular height from
the floor. Irregular shapes are easily configured using the Windows-
based SCD software.