Siemens Automation System S7-400 - Manual (Page 27)

Installing the S7-400
2-11
Automation System S7-400 Hardware and Installation
A5E00850741-01
Space Required When Using Cable Channels and Fan Subassemblies
A cable duct or fan subassembly must be installed in the 19-inch pitch immediately
below the rack. Additional space for cable routing must be provided on both sides.
The following figure shows how much space you need to allow for when using a
cable duct or fan subassembly.
Cable duct/fan subassembly
440 mm
Mounting depth, fitted: max. 237 mm 19-inch reference level
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
523 mm (with cable duct)
543 mm (with fan subassembly)
Dimensions of the Racks
The following figure shows the dimensions for racks with 18, 9 and 4 slots and the
positions of cutouts for screw mounting.
The cutouts are arranged according to the 19-inch standard.