BWS-T2 Series Instructions manual
10
2.3 SENSORS
The photoelectric sensors must be mounted in front of the danger area
(as per EN 999) so as to protect the entire danger area.
The sensors must be installed in the vicinity of the operating
equipment in such a way as to allow ENTRY or OPERATION of the
machine ONLY THROUGH the safety barrier. The possibility of
reaching the danger area from below, above or from around the safety
barrier must be prevented. It must not be possible to move or alter the
installation in any way.
In addition, it must not be possible to be inside of the danger area
behind the safety barrier. This must be detected by the safety barrier.
The electrical connection from the BWS-T2 box to the sensors is done
via shielded cables. The possible lengths are listed in the sensor
datasheets. If using sensors with connectors, be sure that your cable is
shielded.
2.4 SAFETY DISTANCE (SD)
The photoelectric sensors must be mounted at a "safety distance" (S)
in front of the machine or danger area. It must be assured that the
dangerous movement is stopped before a person is able to touch the
dangerous moving parts.
This safety distance (S) depends upon the reaction time of the BWS-
T2, the speed of the person or object penetrating the "guarded" area
(approx. value: v=1.6m/s) and the lagtime of the machine. See figure
5.
To Next Page
Loading...
Need help?
General