Installing the S7-400

2.7Methods of Ventilation

Methods of Ventilation

Under extreme ambient conditions, particularly when operating S7-400 modules in cabinets, you can use the cable duct or fan subassembly to optimize ventilation.

There are two methods of supplying air to the modules. You draw in air either from the back or from below. The cable duct and fan subassembly can be converted for this purpose.

The following figure shows the ventilation when air is drawn in from the back.

 

Wall

 

 

Exhaust air

 

Modules

 

 

Cable duct or fan

 

subassembly

 

Exhaust air

 

Modules

 

 

Supply air

 

2-18

Automation System S7-400

Hardware and Installation

 

A5E00850741-01

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Image 34
Siemens S7-400 installation manual Methods of Ventilation