SIMATIC IPC627D/827D 
Operating Instructions, 09/2014, A5E32990859-AB 
19 
 
General safety instructions 
 
Life-threatening voltages are present with an open control cabinet 
When you install the device in a control cabinet, some areas or components in the open 
control cabinet may be carrying life-threatening voltages. 
If you touch these areas or components, you may be killed by electric shock. 
Switch off the power supply to the cabinet before opening it. 
 
 
Damage through system expansions 
Device and system expansions may be faulty and can affect the entire machine or plant. 
The installation of expansions can damage the device, machine or plant. Device and 
system expansions may violate safety rules and regulations regarding radio interference 
suppression. If you install or exchange system expansions and damage your device, the 
warranty becomes void.  
Note the following for system expansions: 
●  Only install system expansion devices designed for this device. Contact your technical 
support team or where you purchased your PC to find out which system expansion 
devices may safely be installed. 
●  Observe the information on electromagnetic compatibility (Page 102). 
 
Note that the device is classified as "Open Type" for use in the area of Industrial Control 
Equipment (UL508). Installation of the device in an enclosure complying with UL508 for 
specific permitted mounting positions (see corresponding section) is a prerequisite for 
approval or operation in accordance with UL508.