Application planning
5
5.1 Supplementary electrical conditions
5.1.1 Grounding concept
Components
The SINUMERIK ONE system consists of several individual components that have been designed
so that the system complies with the appropriate EMC and safety standards. The individual
system components are:
• Numerical Control Unit NCU
• Machine Control Panel MCP, Machine Push Button Panel MPP
• Keyboard
• Operator panels (SIMATIC ITC, SIMATIC IPC for SINUMERIK + SIMATIC IFP)
• Distributor box and handheld unit
• S7-1500 I/O devices
Grounding measures
The individual modules are attached to a metal cabinet panel. Insulating paints on the mounting
points must be removed.
It is permissible to have a cluster of operator components for ground connection /
equipotential bonding.
Example: The control panel on the swivel arm.
It is sucient in this instance to connect the ground connections of, for example, the
SIMATIC IPC for SINUMERIK or ITC using a cable and to route a shared grounding conductor to
the central ground connection in the control cabinet.
More information
More information about EMC installation guidelines can be found under:
• Conguration Instructions, EMC installation guideline (
https://
support.industry.siemens.com/cs/document/60612658/emc-design-guidelines-
conguration-manual-01-2012?dti=0&lc=en-WW)
NCU 1750
Equipment Manual, 10/2023, A5E45627807B AH 45
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