SIMATIC Rack PC 547B
Operating Instructions, 12/2007, A5E01127519-02
115
ESD directives
B
B.1
ESD guidelines
Definition of ESD
All electronic modules are equipped with large-scale integrated ICs or components. Due to
their design, these electronic elements are highly sensitive to overvoltage, and thus to any
electrostatic discharge.
The electrostatic sensitive components/modules are commonly referred to as ESD devices.
This is also the international abbreviation for such devices.
ESD modules are identified by the following symbol:
CAUTION
ESD devices can be destroyed by voltages well below the threshold of human perception.
These static voltages develop when you touch a component or electrical connection of a
device without having drained the static charges present on your body. The electrostatic
discharge current may lead to latent failure of a module, that is, this damage may not be
significant immediately, but in operation may cause malfunction.
Summary of Contents for SIMATIC Rack PC 547B
Page 6: ...Table of contents SIMATIC Rack PC 547B 6 Operating Instructions 12 2007 A5E01127519 02 ...
Page 22: ...Description 3 6 Design SIMATIC Rack PC 547B 22 Operating Instructions 12 2007 A5E01127519 02 ...
Page 136: ...Index SIMATIC Rack PC 547B 136 Operating Instructions 12 2007 A5E01127519 02 ...
