Operating instructions Chapter 3
S3000
8009942/WK81/2012-11-28 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 17
Subject to change without notice
Product description
3.2 Function
T
he S3000 safety laser scanner operates correctly as a protective device only if the
following conditions are met:
The control of the machine, system or vehicle must be electrical.
It must be possible to transfer the dangerous machine, system or vehicle state to a safe
state using the OSSDs on the S3000 at any time, i.e. before a person has reached the
hazardous point or hazardous area.
Or:
It must be possible to transfer the dangerous state of the machine, the system or the
vehicle to a safe state at any time using the OSSDs on a safety controller connected to
the S3000 or to a further safety laser scanner.
The S3000 must be mounted and configured such that it detects objects as they enter
the hazardous area (see chapter 5 “Mounting” on page 66 and chapter 9
“Commissioning” on page 120).
The safety laser scanner’s optical path must always remain clear and is not allowed to
be covered by transparent objects such as protective windows, Plexiglas, lenses etc. The
safety laser scanner’s protective function can only be ensured if the contamination
measurement function is not bypassed by such measures.
3.2.1 Principle of operation
The S3000 is an optical sensor that scans its surroundings in two dimensions using
infrared laser beams. It is used to monitor hazardous areas on machines or vehicles.
The S3000 works on the principle of time-of-flight measurement. It sends out very short
pulses of light (send pulses). At the same time an “electronic stopwatch” is started. When
the light hits an object, it is reflected and received by the safety laser scanner (receive
pulses). From the time between sending and reception (t) the S3000 calculates its
distance to the object.
time-of-flight measurement
by the S3000
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