Wiring Rules - Siemens SIMATIC S7-1500 System Manual

8.4

Wiring rules

Introduction
Use suitable cables to connect the S7-1500R/H redundant system. The tables below set out
the wiring rules for the R/H-CPUs and system power/load current supply.
R/H CPUs and system power/load current supply
Table 8- 2 Wiring rules for R/H-CPUs and system power/load current supply
Wiring rules for ...
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
1)
S7-1500R/H redundant system
System Manual, 01/2024, A5E41814787-AF
-
-
Without wire-end fer- 0.25 to 2.5 mm
rule
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 Design E, 10 mm long
0.25 to 1.5 mm
2
-
3 to 3.5 mm screwdriver, conic
design
Push-in terminal
-
R/H-CPU
2
: 24 to 14
1)
2
: 24 to 16
1)
8.4 Wiring rules
System power/load current
supply
-
-
0.5 to 2.5 mm
2
AWG : 20 to 14
1)
0.5 to 1.5 mm
2
AWG : 20 to 16
1)
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
265