Siemens ISI EN 50295 Brochure page 24

AS-Interface
AS-Interface Safety at work
AS-Interface laser scanner LS4
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Overview
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6/24 Siemens IK PI · 2004
The LS4 Laser Scanner is an optical distance sensor. The device
periodically transmits light pulses within an operating range of
190°.
If the pulses hit an obstruction or a person, the light is reflected
and then received and evaluated by the LS4 laser scanner. The
scanner calculates the precise coordinates of the obstruction
"seen" from the light propagation time.
If the obstruction or the person is located within defined ranges,
a Stop function is executed. Switch-off is then performed via the
safe interface within the system response time.
The Stop function is reset when the protective zone is free again,
depending on the operating mode, either automatically or follow-
ing acknowledgement.
Accessories
Accessories include a twistable mounting support, suitable pre-
assembled connecting cables in diverse lengths as well as
spare parts.