Siemens SIMATIC S7-300 Module data Hardware And Installation Manual

Wiring
S7-300 Programmable Controller Hardware and Installation
6-6 A5E00105492-01
6.4 Wiring the power supply module and the CPU
Prerequisite
The modules are mounted on the profile rail.
Connecting comb (not for CPU 312 IFM and CPU 31xC)
You can connect some of the CPUs to the PS 307 power supply module using the
connection comb included with the module.
PS and CPU wiring
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.
Note
On CPUs 31xC the power supply plug is removable.
Warning
Unintentional contact with live conductors is possible if the power supply module
and any additional load power supplies are switched on.
Always wire the S7-300 with the power turned off!
1. Open the front panel to the PS 307 power supply module and CPU.
2. Open the strain relief clamp on the PS 307.
3. Strip the power cable to a length of 11 mm and connect it to L1, N and to the
ground conductor terminal of the PS 307.
4. Screw-tighten the strain relief clamp again.
5. You have two options of wiring the CPU, depending on which one you are
using:
– CPU 312 IFM and CPUs 31xC: Strip the connecting leads for the CPU
power supply to a length of 11 mm.
Connect the lower terminals M and L+ of PS 307 to terminals M and L+ of
the CPU.
– CPU 313/314/314 IFM/315/315-2 DP/316-2 DP/318-2 DP: Insert the
connection comb and screw-tighten it.
6. Close the front panel.
The figure below illustrates the procedures described above.

Siemens SIMATIC S7-300 Module data Specifications

General

Series	S7-300
Manufacturer	Siemens
Protection Class	IP20
System	SIMATIC S7-300
Digital Inputs	Varies by module
Digital Outputs	Varies by module
Analog Inputs	Varies by module
Analog Outputs	Varies by module
Central Processing Unit	Varies by CPU model
Supply Voltage	24V DC or 120/230V AC
CPU Type	Varies (e.g., CPU 312, CPU 315, etc.)
Memory	Varies by CPU model
Communication Interfaces	MPI, PROFIBUS
Programming Languages	LAD, FBD, STL, SCL, GRAPH
Operating Temperature	0°C to 60°C
Storage Temperature	-40°C to 70°C
Relative Humidity	10% to 95% (non-condensing)