6
ERROR BEHAVIOR
34
SAFETY-RELATED 2D LIDAR SENSOR | TIM361S
8022483/108R/2018-07-09 | SICK
Subject to change without notice
6
Error behavior
6.1
General
A non-hazardous failure of the laser scanner occurs:
•
When the laser scanner switches to defined status 2 and/or 3
without request of
the safety function
.
•
When the laser scanner switches to defined status 2 and/or 3 in the event of a
detected internal error
.
A hazardous undetected failure occurs:
•
When the laser scanner fails to switch to defined status 1, defined status 2 and/or
defined status 3 upon request of the
safety function
.
6.2
Detected errors
The TiM361S detects some internal errors merely to improve its availability and
support troubleshooting in the event of a fault.
The sensor has diagnostic coverage (DC) of zero in accordance with EN ISO 13849-1
PL b. The internal errors detected by the sensor
cannot
be used to increase the DCs
within the meaning of this standard! (See also Error codes of the 2D LiDAR sensor)
6.3
Undetected errors and faults
The TiM361S will
not
detect the following errors and faults, among others:
•
Digital inputs:
wire break, short-circuit, cross-circuit to the digital inputs for field set selection (IN1,
IN2, IN3, IN4), making it possible to select an incorrect field set.
•
Digital outputs:
wire break, short-circuit, cross-circuit to the digital outputs for field set infringement
(OUT1, OUT2, OUT3) and Device Ready (OUT4), with the effect that the defined
statuses can no longer be detected by the downstream controller.
•
Status indicators:
Failure of the status indicators for field set status, with the result that infringement
of the protective field is not correctly displayed optically on the device.
•
Contamination:
Contamination of the optics and/or the front screen, causing impairment, reduction
or complete loss of detection capability, and the device no longer being able to
perform the safety function.
•
Ambient light:
Malfunctions due to faults of other scanners and light sources within the level of the
scan field, causing impairment, reduction or complete loss of detection capability,
and the device no longer being able to perform its function.
•
Incorrect measurements:
Measurement of objects with edges and/or corners and/or which are moving too
quickly (determined by the measurement procedure) can result in incorrect distance
values, causing impairment, reduction or complete loss of detection capability, and
the device no longer being able to perform the safety function.
•
Blind zone:
Objects, especially covering objects, located within the blind zone extending f
