Operating Cabinet Modules On An Isolated-Neutral Supply System (It System); Signal Connections; Other Connections - Siemens SINAMICS S120 Equipment Manual

Electrical installation
4.5 Connections
4.5.7

Operating Cabinet Modules on an isolated-neutral supply system (IT system)

When the Cabinet Modules are operated on an isolated-neutral supply system (IT system),
the integrated EMC filters are deactivated by unscrewing a connection clamp in the following
Cabinet Modules.
● Basic Line Module
● Smart Line Module
● Active Line Module (connection clamp in the Active Interface Module)
The location of the connection clamps for the various Cabinet Modules and sizes can be
obtained from the interface overviews in "S120 Equipment Manual for Chassis Power Units",
which is included on the supplied customer CD.
Failing to remove the connection clamp to the EMC filter on a non-grounded system/IT
system can cause significant damage to the device.
4.5.8

Signal connections

Note
The factory setting and description of the customer terminal blocks are documented in the
circuit diagrams.
The location of the customer terminal blocks of the individual Cabinet Modules is
documented in the layout diagrams.
The interfaces or customer terminal blocks are documented for the respective Cabinet
Modules.
DRIVE-CLiQ cables must be locally routed according to the customer-specific engineering
specifications for the entire system.
4.5.9

Other connections

Depending on the range of options installed, further connections may have to be made.
For more information about the interfaces of available options, refer to the relevant sections
in this manual.
74
(on frame sizes HX and JX, the connection clamp is located behind the fan)
WARNING
S120 Cabinet Modules Equipment Manual
Manual, (GH5), 10/2008, A5E00427098A