Pilz PSSu E S 2AO I - Manual (Page 17)

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4-1
4.1 Module features
4 Function description
4 4000 Function description Function description 4- 4.1 Module features 4100 Module features 4- 4.1.1 Function description
Function description 4- ][Funktionsbeschreibung Module Supply
Module supply
 The module supply provides the module with voltage.
][Funktionsbeschreibung_Peri ST-AO
Periphery supply
 The supply for the outputs is generated from the periphery supply.
 The periphery supply and the outputs are galvanically isolated.
][Funktionsbeschreibung BA Einleitung ST-AO
The output signals for each output are transmitted to the output module
via the ST module bus. The resolution is 12 bits (4095 steps). Additional
signal processing can be defined using the system software (see sche-
matic representation of signal processing). The individual steps are de-
scribed in the "Configuration" section.
All the configuration data is stored in the head module and is assigned
to the output module on restart. This way the configuration data is re-
tained even if you change the output module.
][Funktionsdiagramm ST-AO
Schematic representation of signal processing:
4.1.2 Integrated protection mechanisms
Integrated protection mechanisms 4- ][Schutzmechanismen E/A-Module
When the PSSu E F PS1(-T) is used to supply the system, the module
supply is buffered for 20 ms if the supply voltage is interrupted.
][Schutzmechanismen ST-Module
The module detects the following errors:
 Start-up error
 Configuration error
 ST communication error
 Bus termination error
OUT DAC
Data
format
ST
module
bus
User
scaling
Manufact.
scaling