
Rack
2.1 Function and design of the racks
S7-400 Automation System Module Data
38 Reference Manual, Edition 09/2009, A5E00850736-06
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(1) Mounting rail
(2) Plastic parts
(3) Bus connector (covered when shipped)
(4) Connection for local ground
Figure 2-1 Configuration of a rack with 18 slots
UL/CSA note
Special requirements should be taken into consideration in the area of influence of the
UL/CSA; these may be fulfilled by installing the system in a cabinet.
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