Installation
7.1 Basics
S7-1500R/H redundant system
System Manual, 01/2024, A5E41814787-AF
239
The rails are available in various lengths. You can order the 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 497).
Minimum clearances
Modules can be mounted along the entire length of the rail. Maintain the following minimum
clearances when installing or dismantling the S7-1500R/H redundant system.
Figure 7-1 Minimum clearances in the control cabinet
Installation rules
The redundant system configuration consists of:
• R-CPU and optional system power/load current supply, CP 1543-1 communications
processors (via U-connector)
• H-CPU and optional system power/load current supply, communications processors
CP 1543-1 (via active backplane bus)
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.
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