Safety Symbols - Siemens SINUMERIK ONE NCU 1760 Equipment Manual

Safety symbols

Protective conductor connec‐
General warning symbol
NCU 1760
Equipment Manual, 02/2020, A5E45627861B AB
Icon
The equipment is only suitable for direct current. Used for marking cor‐
responding terminals.
Direct current
For marking the connection for an external protective conductor for pro‐
tecting against electrical shock in the event of an error or for a connect‐
ing terminal of the external protective conductor.
tion
To identify the functional grounding.
Ground
The documentation must be consulted in any scenario where the sym‐
bol is affixed in order to find out the type of potential hazard and the
actions required to avoid the risk.
Explanation
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