System Overview
S5-115F Manual
1.3
System Components
The S5-115F system is made up of various modular components, as pictured in Figure 1-1. These
components include the following:
•
Power supply modules (PS)
•
Central processing units (CPU)
•
Input and output modules (I/O)
•
Interface modules
•
CP 523 communications processor
Figure 1-1. S5-115F Components
1.3.1
Power Supply
The power supply module (PS) converts the external power supply to the internal operating
voltage. Supply voltage for the S5-115F is 24 V DC. The 24 V DC system voltage must be reliably
isolated from the line voltage (e.g. 220 V).
Screw-type terminals connect the power supply lines to the bottom of the PS.
Lithium batteries ensure that the CPU RAM is backed up in the event of a power failure. Battery
failure is indicated by an LED. Backup voltage can be supplied externally via sockets so that the
batteries can be changed also when the PLC is in RUN.
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EWA 4NEB 811 6148-02