Wiring The Power Supply Module And The Cpu - Siemens SIMATIC S7-300 Hardware And Installation Manual

CPUs 31xC:
strain-relief assembly
Other CPU´s besides
CPU 312 IFM:
strain-relief assembly
CPU 312 IFM: wire L+ and M via the front connector of CPU 312 IFM
Figure 6-3 Wiring the power supply module and the CPU
Note
The PS 307 power supply module is equipped with two additional DC 24 V
connections (L+ and M) for the supply of I/O modules.
S7-300 Programmable Controller Hardware and Installation
A5E00105492-01
230 V/120 V
power connector
230 V/120 V
DC 24 V
230V
L1
N
L+
M
L+
L+
M
M
power supply connector
of CPU 31xC (removable)
connecting cables for the
CPU´s power supply
0.5 to 0.8 Nm
Wiring
6-7