4 function description, 1 control system, 2 supply voltage – Pilz PSSu H m F DPsafe SN SD User Manual
Page 11: 1 function description, 2 current load capacity, Section 4, Function description, Control system, Supply voltage, Current load capacity
Function description
Operating Manual PSSu H m F DPsafe SN SD
1002933EN02
11
4
Function description
4.1
Control system
The head module is a programmable logic controller (PLC), which can be used in safetyre
lated and nonsafetyrelated 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 safetyrelated applications, the processor section is designed with multichannel 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.
4.2
Supply voltage
4.2.1
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 (righthand 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.
4.2.2
Current load capacity
Ensure you comply with the current load capacity of the module and periphery supply (see
"Technical Details"). If the current load is higher, an additional supply voltage module is re
quired to refresh the module supply and periphery supply.
}
Module supply
The current load is the total current consumption of all the electronic and compact mod
ules.
The module supply does not automatically switch off if values exceed or drop below
their limits. However, the "5 V" LED will light and a message will be entered in the dia
gnostic list.
}
Periphery supply
The current load is the total current consumption of the sensors, actuators and test
pulses supplied via the input/output modules.
The periphery supply does not automatically switch off if values exceed or drop below
their limits. However, the "24 V" LED will light and a message will be entered in the dia
gnostic list.