Siemens Simatic S7-300 CPU 31xC Series User Manual

Installing
5.2 Installing the mounting rail
S7-300, CPU 31xC and CPU 31x: Installation
Operating Instructions, Edition 08/2004, A5E00105492-05
5-3
Tools required and material
To install the S7-300, you require the tools and materials listed in the table below.
Table 5-2 Installation tools and materials
You require ... for ...
cutting the 2 m rail to length commonly available tool
scribing and drilling holes on the 2 m rail commonly available tool, 6.5 mm diameter drill bit
screw-mounting the rail wrench or screwdriver, matching the selected
fixing screws
diverse M6 screws (length depends on the place
of installation) with nuts and spring lock washers
screw-fastening the modules on the rail screwdriver with 3.5 mm blade width (cylindrical
design)
pulling out the grounding slide contact to achieve
ungrounded state
screwdriver with 3.5 mm blade width (cylindrical
design)
5.2 Installing the mounting rail
Mounting rail versions available
• Ready-to-use, four standard lengths (with 4 holes for fixing screws and 1 ground
conductor bolt)
• One meter mounting rail
May be shortened to any special length. Supplied without holes for fixing screws and
without ground conductor bolt.
Requirements
Prepare the 2 m mounting rail for installation.

Siemens Simatic S7-300 CPU 31xC Series Specifications

General

Series	S7-300 CPU 31xC
Power Supply	24 V DC
Communication Interfaces	MPI, PROFIBUS DP
Programming Languages	LAD, STL, FBD, SCL
Operating Temperature	0°C to +60°C
Memory	48 KB - 512 KB
Dimensions	40 x 125 x 130 mm (varies by model)