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2.4.2.4. Automatically Recoverable Protective Stop
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.
This configuration is only for applications where the operator is unable
to close the door from behind. Configurable I/O can be used to set the
reset button outside the door, as 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.
2.4.2.5. Protective Stop with Reset Button
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 the example shown below, the I/O of the reset
configuration is “CI0”.(the corresponding configuration must also be
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