The mounting rails are available in various lengths. You order the mounting rails using the
online catalog or the online ordering system. The available lengths and article numbers can
be found in the appendix Accessories/spare parts (Page 369).
Minimum clearances
Modules can be mounted right to the outer edge of the mounting rail. Maintain the following
minimum clearances when installing or dismantling the S7‑1500R/H redundant system.
① Upper edge of the mounting rail
Figure 6-1Minimum clearances in the control cabinet
Installation rules
The redundant system configuration consists of:
R/H-CPU and an optional load current supply.
WARNING
Protection from conductive contamination
Protect the devices from conductive contamination, taking into account the ambient
conditions.
Protection from conductive contamination can, for example, be achieved by installing the
devices in a control cabinet with the appropriate degree of protection.
154
S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD
Installation
6.1 Basics
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