Chapter 1 Operating Instructions
M4000 Adv., Adv. A/P, Area
8 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 8010797/PA53/27-06-05
About this document
LED symbols describe the status of an LED:
The LED is constantly illuminated.
The LED is flashing.
The LED is off.
Instructions for taking action are shown by an arrow. Read carefully and follow the
instructions for action.
WARNING
Warning!
A warning indicates an actual or potential risk or health hazard. They are designed to help
you to prevent accidents.
Read carefully and follow the warning notices!
Software notes show the location in the CDS (Configuration & Diagnostic Software) where
you can make the appropriate settings and adjustments.
Sender and receiver
In drawings and diagrams, the symbol denotes the sender and the symbol denotes
the receiver.
The term “dangerous state”
The dangerous state (standard term) of the machine is always shown in the drawings and
diagrams of this document as a movement of a machine part. In practical operation, there
may be a number of different dangerous states:
• machine movements
• electrical conductors
• visible or invisible radiation
• a combination of several risks and hazards
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Take action …
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