Siemens SIMATIC S7-1200 System Manual page 54

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Table of Contents

Installation

4.1 Guidelines for installing S7-1200 devices

Separate the S7-1200 devices from heat, high voltage, and electrical noise

As a general rule for laying out the devices of your system, always separate the devices that

generate high voltage and high electrical noise from the low-voltage, logic-type devices such

as the S7-1200.

When configuring the layout of the S7-1200 inside your panel, consider the heat-generating

devices and locate the electronic-type devices in the cooler areas of your cabinet. Reducing

the exposure to a high-temperature environment will extend the operating life of any

electronic device.

Consider also the routing of the wiring for the devices in the panel. Avoid placing low-voltage

signal wires and communications cables in the same tray with AC power wiring and high-

energy, rapidly-switched DC wiring.

Provide adequate clearance for cooling and wiring

S7-1200 devices are designed for natural convection cooling. For proper cooling, you must

provide a clearance of at least 25 mm above and below the devices. Also, allow at least 25

mm of depth between the front of the modules and the inside of the enclosure.

For vertical mounting, the maximum allowable ambient temperature is reduced by 10

Orient a vertically mounted S7-1200 system as shown in the following figure.

Ensure that the S7-1200 system is mounted correctly.

S7-1200 Programmable controller

System Manual, V4.2, 09/2016, A5E02486680-AK