17
Operating Instructions
SEG
3 Description
3
Description
3.1
Introduction
Pull-rope emergency stop switches, type SEG are used
as emergency stop devices actuated on both sides in
stationary conveyor systems in control circuits in accor-
dance with the safety requirements of DIN EN 620 and in
harmony with DIN EN ISO 13850. According to the BGIA
report 2/2008 "Functional safety of machine controls -
application of DIN EN ISO 13849" issued by the German
Social Accident Insurance (Deutsche Gesetzliche Unfall-
versicherung), the pull-rope emergency stop switches
can be used as emergency stop devices in safety control
circuits up to performance level PLe.
The pull-rope emergency stop switch SEG can be actu-
ated in two directions via a pull-rope (
20
). The pull-rope
is stretched under tension along the length of the convey-
or system and is guided by the pull-rope guides (
21
). The
pull-rope emergency stop switch SEG is mounted in the
center between the two attachment points (
22
).
Fig. 3-1:
Function of the pull-rope emergency stop switches SEG
Reset lever (
2
)
Pull-rope emergency stop switch SEG
Trigger lever (
1
)
Pull-rope guide (
21
)
Pull-rope (
20
)
Attachment point (
22
)
Attachment point (
22
)
Direction of actuation
