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The door switch is an example of a basic protective stop device. When the door is open, the
robotic arm stops. See the figure below.
8.5.2.4 Automatically recoverable protective stops
If you use a protective interface to interact with the light curtain, you need to reset from
outside the safety zone. The reset button must be a two-channel button. In this example,
the I/O of the reset configuration is “CI0-CI1”, see the figure below.
8.5.2.5 Protective stop with reset button
This configuration is only for applications where the operator is unable to close the door
behind it. Configurable I/O can be used to set the reset button outside the door, in order to
reactivate the movement of the robotic arm. Another example of an automatic recovery is
the use of a safety pad or a safety laser scanner, see the figure below.