Free Space Required For An S7-300 Installation - Siemens SIMATIC S7-300 Hardware And Installation Manual

Installation
Installing the rail
1. When you mount the rails, allow sufficient space for mounting modules and heat
elimination (at least 40 mm above and below the modules. See the figure
below).
2. Mark up the mounting holes on the mounting surface. Drill the holes to a
diameter of 6.5
3. Screw on the rail (M6 screws).
Note
Take care to create a low-impedance connection between the rail and a
mounting surface which is a grounded metal plate or equipment mounting plate.
In the case of varnished or anodized metals, for instance, use a suitable
contacting agent or contact washers.
Figure 6-2 Free space required for an S7-300 installation
6-6
+0,2
mm.
40 mm
SIEMENS
20
mm
40 mm
S7-300 Programmable Controller Hardware and Installation
20
mm
A5E00105492-02