Installing The Mounting Rail - Siemens SIMATIC S7-1500 System Manual

6.2

Installing the mounting rail

Introduction
The R/H-CPUs should be mounted either on one mounting rail or on two separate mounting
rails.
Lengths and drill holes
The mounting rails are delivered in six lengths:
• 160 mm
• 245 mm
• 482.6 mm (19 inches)
• 530 mm
• 830 mm
• 2000 mm
You can find the article numbers in the appendix Accessories/spare parts (Page 369).
The mounting rails (from 160 to 830 mm) come with two drill holes for fixing screws. A set of
screws for grounding the mounting rail is provided.
The 2000 mm mounting rail is designed for assemblies with special lengths and does not
have holes for fixing screws. No set of screws for grounding is included with the mounting
rail (can be ordered as accessories/spare parts (Page 369)).
The specifications of the maximum offsets between two drill holes can be found in the table,
"Dimensions for the drill holes".
Tools required
• Commercially available hacksaw
• Drill ∅ 6.5 mm
• Screwdriver
• Size 10 adjustable screw-wrench or socket wrench for grounding cable connection
• Adjustable screw-wrench, matching the selected fixing screws
• Stripping tool and crimp tool for the grounding cable
Accessories required
Use the following screw types for fastening the mounting rails:
Table 6-1 Accessories required
For ...
• Outer fixing screws
S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD
use ...
M6 fillister head screws according to
ISO 1207/ISO 1580 (DIN 84/DIN 85)
6.2 Installing the mounting rail
Explanation
Choose a suitable screw length for your
assembly.
Installation
155