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

Installation
Fixing screws
You can use the following type of screw to mount the profile rails:
Lateral fixing screws
additional fixing screws
(only 2-m profile rail)
Mounting the profile rail
1. When you mount the profile 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 profile rail (M6 screws).
Note
Take care to create a low-impedance connection between the profile 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 5-2 Free space required for an S7-300 installation
5-6
For ...
Cylindrical head screw M6 to
ISO 1207/ISO 1580
(DIN 84/DIN 85)
M6 hexagonal head screw to
ISO 4017 (DIN 4017)
Cylindrical head screw M6 to
ISO 1207/ISO 1580
(DIN 84/DIN 85)
+0,2
mm.
40 mm
SIEMENS
20
mm
40 mm
Type of screw
Choose a suitable screw
length for your assembly.
You also need size 6.4
washers to ISO 7092
(DIN 433)
S7-300 Programmable Controller Hardware and Installation
Description
20
mm
A5E00105492-01