Siemens PCIL43 Manual De Usuario

Descargar
Página de 112
 
SIMATIC Rack PC IL 43 
Operating Instructions, Edition 09/2005, A5E00432875-01 
B-1
 
ESD Guidelines 
B
B.1 
B.1 
ESD Guidelines 
What does ESD mean?  
All electronic modules are equipped with highly integrated modules or components. Based 
on their design, these electronic components are highly sensitive to overvoltage and thus to 
discharge of static electricity. 
The electrostatic sensitive components/modules are commonly referred to as ESD devices. 
You can also find the commonly used international designation ESD for electrostatic 
sensitive device. 
Electrostatic sensitive modules are identified by the following symbol: 
 
 
 
Caution 
Electrostatic sensitive devices may be destroyed by voltages and energies that are 
undetectable to a human. Voltages of this kind occur as soon as a component or an 
assembly is touched by a person who is not grounded against static electricity. The damage 
to a module as a result of overvoltage cannot usually be detected immediately. It may only 
become apparent after a long period of operation.