Siemens SINUMERIK ONE NCU 1760, Equipment Manual

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Application planning
4
4.1 Supplementary electrical conditions
4.1.1 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 (operator panel front + TCU / SIMATIC IPC for SINUMERIK)
● 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 sufficient in this instance to connect the ground connections of, for example, the SIMATIC
IPC for SINUMERIK, TCU and operator panel front using a cable and to route a shared
grounding conductor to the central ground connection in the control cabinet.
Additional information
Additional information about EMC installation guidelines can be found under:
● Configuration Manual, EMC Guidelines
NCU 1760
Equipment Manual, 02/2020, A5E45627861B AB
37