Contents

1

Product Overview

1-1

2

Installing the S7-400

2-1

 

2.1

S7-400 Installation

2-2

 

2.2

Installing the Central Rack (CR) and Expansion Rack (ER)

2-6

 

2.3

Segmented CR

2-8

 

2.4

Subdivided CR

2-9

 

2.5

Mounting and Grounding the Racks

2-10

 

2.6

Chassis Terminal Connection in the Non-Isolated Configuration

2-16

 

2.7

Methods of Ventilation

2-18

2.8Changing the Ventilation with the Cable Duct and Fan Subassembly . . . 2-20

 

2.9

Installing the Fan Subassembly

2-22

 

2.10

Installing the Cable Duct

2-24

 

2.11

Choosing and Setting up Cabinets with the S7-400

2-25

 

2.12

Rules for the Arrangement of Modules

2-29

 

2.13

Installing Modules in a Rack

2-30

 

2.14

Marking the Modules with Slot Labels

2-33

 

2.15

Methods of Expansion and Networking

2-34

 

2.16

Accessories

2-35

3

Addressing the S7-400

3-1

 

3.1

Geographical and Logical Addresses

3-2

 

3.2

How to Determine the Default Address of a Module

3-4

 

3.3

How to Determine the Default Address of a Channel

3-6

4

Wiring the S7-400

4-1

 

4.1

Supplying Power to Modules

4-2

 

4.2

Choosing the Power Supply Module

4-3

 

4.3

Choosing the Load Current Power Supply

4-4

 

4.4

Assembling an S7-400 with Process I/Os

4-5

 

4.5

Assembling an S7-400 with Grounded Reference Potential (M)

4-7

4.6Assembling an S7-400 with Ungrounded Reference Potential

 

(Ungrounded Configuration)

4-8

4.7

Assembling an S7-400 with Isolated Modules

4-10

4.8

Parallel Wiring of Digital S7-400 Outputs

4-12

Automation System S7-400 Hardware and Installation

vii

A5E00850741-01

 

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Siemens S7-400 installation manual Contents