Wiring Rules - Siemens S7-400 Installation Manual

Wiring the S7-400
4.11

Wiring Rules

Lines and Tools
For wiring the S7-400 modules, there are some rules for the cables and for the tool
you use. Information on connecting an M7-400 module assembly can be found in
Section 8.5.
Rules for ... Power Supply
Conductor
cross-sections:
Outer diameter: 3 to 9 mm
Flexible cond. no
without wire end
ferrule
Flexible cond. with 230 VAC: flexible
wire end ferrule sheathed cable
3
24 VDC: flexible
sheathed cable
3
individual wires
1.5 mm
No. of conductors 1
per terminal
Stripping length of 7 mm
single conductors
Wire end ferrules 230 VAC: with
insulating collar to
DIN 46228 E1,5-8
24 VDC: without
insulating collar to
DIN 46228, shape A,
short version
Blade width and 3.5 mm (cylindrical
shape of the screw shape)
driver
Tightening torque: 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-type 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 mm
• AMP
Order no. 966 144-4, for 2 x 1 mm
4-18
Crimp terminal
0.5 to 1.5 mm
no
2
1.5 mm
2
1.5 mm or
2
1
5 mm
-
-
-
S7-400 and M7-400 Programmable Controllers Hardware and Installation
... Front Connectors
Screw-type Spring-type terminal
terminal
2 2
0.25 to 2.5 mm 0.08 to 2.5 mm
2
0.25 to 1.5 mm 0.25 to 1.5 mm
*
1 1
8 to 10 mm without 8 to 10 mm without
ferrule ferrule
10 mm with ferrule 10 mm with ferrule
with or without with or without
insulating collar to insulating collar to
DIN 46228 Part 1 DIN 46228 Part 1 or
or 4, Shape A, 4, Shape A, normal
normal version version
3.5 mm (cylindrical 0.5 mm x 3.5 mm
shape) DIN 5264
0.6 to 0.8 Nm -
2
2
2
2
*
A5E00069481-04