Siemens S7-400 installation manual Contents

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