Wiring the S7-400

4.11Wiring Rules

Lines and Tools

For wiring the S7-400 modules, there are some rules for the cables and tools to use.

Rules for

... Power Supply

 

... Front Connectors

 

 

 

 

 

 

 

Crimp terminal

Screw-type

Spring-type terminal

 

 

 

terminal

 

 

 

 

 

 

Conductor

 

 

 

 

cross-sections:

 

 

 

 

Outer diameter:

3 to 9 mm

 

 

 

Flexible cond.

no

0.5 to 1.5 mm2

0.25 to 2.5 mm2

0.08 to 2.5 mm2

without wire end

 

 

 

 

ferrule

 

 

 

 

Flexible cond. with

230 VAC: flexible

no

0.25 to 1.5 mm2

0.25 to 1.5 mm2

wire end ferrule

sheathed cable

 

 

 

 

3 x 1.5 mm2

 

 

 

 

24 VDC: flexible

 

 

 

 

sheathed cable

 

 

 

 

3 x 1.5 mm2 or

 

 

 

 

individual wires

 

 

 

 

1.5 mm2

 

 

 

No. of conductors

1

1

1 *

1 *

per terminal

 

 

 

 

 

 

 

 

 

Stripping length of

7 mm

5 mm

8 to 10 mm without

8 to 10 mm without

single conductors

 

 

ferrule

ferrule

 

 

 

10 mm with ferrule

10 mm with ferrule

 

 

 

 

 

Wire end ferrules

230 VAC: with

-

with or without

with or without

 

insulating collar to

 

insulating collar to

insulating collar to

 

DIN 46228 E1,5-8

 

DIN 46228 Part 1

DIN 46228 Part 1 or

 

24 VDC: without

 

or 4, Shape A,

4, Shape A, normal

 

 

normal version

version

 

insulating collar to

 

 

 

 

 

 

DIN 46228, shape A,

 

 

 

 

short version

 

 

 

 

 

 

 

 

Blade width and

3.5 mm (cylindrical

-

3.5 mm (cylindrical

0.5 mm x 3.5 mm

shape of the screw

shape)

 

shape)

DIN 5264

driver

 

 

 

 

 

 

 

 

 

Tightening torque:

0.6 to 0.8 Nm

-

0.6 to 0.8 Nm

-

for connecting

 

 

 

 

conductors

 

 

 

 

*You can also connect a combination of two conductors of up to 1.0 mm each to a screw-type or spring-loaded terminal. You must use special wire end ferrules for this purpose. Two types and manufacturers of such ferrules are given below:

Phoenix TWIN

Type no. 32 00 81 0, for 2 x 1 mm2

AMP

Order no. 966 144-4, for 2 x 1 mm2

Note

You must use shielded cables for the analog modules (see Section A.5).

Automation System S7-400

Hardware and Installation

4-17

A5E00850741-01

 

Page 77
Image 77
Siemens S7-400 installation manual Wiring Rules, Lines and Tools