Wiring Rules - Siemens SIMATIC S7-1500 System Manual

5.5

Wiring rules

Introduction
Use suitable cables for connecting the S7-1500 automation system/ET 200MP distributed
I/O system. The following tables present the wiring rules for the CPU, interface module,
system power supply, load current supply, front connector and power supply elements.
CPU, interface module, system power supply and load current s upply
Table 5- 2 Wiring rules for CPU, interface module, system power supply and load current supply
Wi ri n g ru l e s fo r ...
Permitted cable cross-sections of solid cables (Cu)
Permitted cable cross-
sections of flexible cables
(Cu)
Number of wires per connection
Stripped length of the wires
End sleeves according to
DIN 46228
Sheath diameter
Tool
Connection system
Tightening torque
* American Wire Gauge
Automation system
System Manual, 09/2016, A5E03461182-AD
-
-
Without wire end 0.25 to 2.5 mm
sleeve
AWG
With end sleeve 0.25 to 1.5 mm
AWG
1
10 to 11 mm
without plastic sleeve Design A, 10 mm long
with plastic sleeve 0.25 Design E, 10 mm long
to 1.5 mm
2
-
3 to 3.5 mm screwdriver, conic
design
Push-in terminal
-
C PU /i n te rfa ce m o d u l e
2
: 24 to 16
*
2
: 24 to 16
*
5.5 Wiring rules
System power and load current
su p p l y
-
-
1.5 mm
2
AWG : 16
*
1.5 mm
2
AWG : 16
*
1
7 to 8 mm
Design A, 7 mm long
Design A, 7 mm long
8.5 mm
3 to 3.5 mm screwdriver, conic
design
Screw terminal
from 0.5 Nm to 0.6 Nm
Wiring
75