Foreword 
 
 
 
Basic safety measures 
Only switch the PC off after 
closing the software 
Before the Industrial PC is switched off, software that is running must 
be properly closed. 
 
Otherwise it is possible that data on the hard disk is lost. Please read the 
section on Switching the Industrial PC on and off. 
 
Switch off all parts of the equipment, then uncouple the fieldbus 
 
Attention 
Before opening the housing of the PC, and whenever the PC is being 
used for purposes other than plant control, such as during functional tests 
following repair, all parts of the equipment must first be switched off, after 
which the Industrial PC can be uncoupled from the plant. 
 
Pulling out the fieldbus connection plug uncouples the PC (optional). 
 
Items of equipment that have been switched off must be secured against 
being switched on again. 
 
  The Industrial PC’s power supply unit must be supplied with 24 V
DC
. 
 
Do not exchange any parts when under power 
 
Attention 
When components are being fitted or removed, the supply voltage must 
be switched off. 
 
Fitting work on the Industrial PC can result in damage: 
•  if metal objects such as screws or tools fall onto operating circuit 
boards. 
•  if connecting cables internal to the PC are removed or inserted 
during operation. 
•  if plug-in cards are removed or inserted when the PC is switched 
on. 
C6930  5