Siemens SIMATIC CN 4100 Equipment Manual page 29

Restrictions on installation
The following ambient temperatures are permissible:
• Vertical installation: -30 °C to 60 °C
• Horizontal installation: -30 °C to 45 °C
Procedure
The required sequence for installing the system is as follows:
1. Rack
2. CPU module(s)
3. Communications module(s)
Mounting a rack
When installing the SIMATIC CN 4100 communication system, start with the rack.
SIMATIC CN 4100 modules are "open equipment" according to IEC 61131-2 and an "open type"
according to UL/CSA approval. The following alternative installation methods are prescribed to
meet the specifications for safe operation in terms of mechanical strength, flame resistance,
stability and protection against accidental contact:
• Installation in a suitable enclosure
• Installation in a suitable cabinet
• Installation in a suitably equipped, enclosed operating room
Access to these rooms must only be possible with a key or tool. Access to these enclosures,
cabinets or electrical operating rooms is only to be permitted for trained or authorized personnel.
Note
Ambient and environmental conditions
The following aspects must be taken into account when planning the system application:
• Climatic and mechanical environmental conditions according to the "Technical
specifications" section of the documentation.
• The device is only approved for indoor operation.
• Extreme ambient conditions must be avoided. The device must be protected against dust,
moisture and heat.
• The device must not be exposed to direct sunlight.
• The ventilation slots of the device must not be covered.
CN 4100 Communication System
Equipment Manual, 10/2021, A5E50871363-AA
CAUTION
Installation
5.5 Overview of the installation
29