Function description
Operating Manual PSSu H m F DPsafe SN SD
1002933-EN-04
11
4
Function description
4.1
Block diagram
Modu
le Bus
Module
Supply
+ 5 V DC
Data
(FS/ST)
Configu-
ration
Config./
Data
(FS/ST)
Periphery
Supply
+ 24 V DC
=
=
Power
Periphery
Supply
Power
Module
Supply
24V 0V
24V
0V
SD Card
PROFIBUS DP
5
9
1
6
Data
(ST)
SafetyNET p
4.2
Control system
The head module is a programmable logic controller (PLC), which can be used in safety-re-
lated and non-safety-related applications. The control system has memory areas for the op-
erating system, the data and the device project with the user program.
User programs can be created in Multi programming.
For safety-related applications, the processor section is designed with multi-channel di-
versity.
The control system communicates with the input and output modules via the local module
bus.
LEDs provide information on the status of the control system and indicate any errors.
4.3
Supply voltage
4.3.1
Function description
The product provides the module supply and periphery supply for the modules on the mod-
ule bus:
}
Module supply
Supply voltage for subsequent module (right-hand side)
}
Periphery supply
Supply voltage for sensors, actuators and test pulses
When the supply voltage is fed in separately, the module supply and periphery supply are
galvanically isolated. If galvanic isolation is not required, a common power supply may be
used for the periphery supply and module supply.
