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When...
Then...
l
no motion is detected in the protective
field, and
l
with the static object detection option
enabled (see
static object detection option below
), no
static object is detected in the protective
field
the safety outputs remain active
l
motion is detected in the protective field, or
l
with the static object detection option
enabled (see
static object detection option below
), a
static object is detected in the protective
field
l
the safety outputs are deactivated
l
the restart prevention function remains
active
l
the sensitivity remains as it was before
motion/static object detection
The sensor can detect micro-movements of just a few millimeters, such as breathing
movements (with normal breathing or a short apnea) or the movements necessary for a
person to remain in balance in an upright or squatting position.
The system sensitivity is higher than the sensitivity that characterizes the access
detection function. For this reason, the system reaction to vibrating and moving parts is
different.
WARNING
When the restart prevention function is active the monitored area may be affected by
the position and inclination of the sensors, as well as by their installation height and
angular coverage (see
).
5.6.2
Restart timeout parameter
When the system does not detect motion anymore or, with static object detection option
enabled, no static object is detected, the OSSD outputs remain in OFF-state for the time
set in the
Restart timeout
parameter.
The default value is 4 s, the maximum is 60 s, and the minimum is the CRT (Certified
Restart timeout).
WARNING
The static object detection option affects the value range of the Restart timeout
parameter and therefore affects the operation of the restart prevention function (see
Restart timeout parameter on the next page
).
5.7
Restart prevention function: static object detection option
5.7.1
Introduction
The static object detection option allows the restart prevention function also to detect
static objects in the dangerous area.
5 FUNCTIONING PRINCIPLES
8027489/2022-03-01 | SICK
Subject to change without notice
O P E R A T I N G I N S T R U C T I O N S | safeRS3
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