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General technical specifications
1.1 Installation and EMC guidelines
1.1.1.2
Danger and warning notes
The modules contain components that are sensitive to electrostatic charge. Before touching
an electronic module, you must discharge your body. This can be simply done by touching
a conductive, grounded object immediately beforehand (e.g. bright metal cabinet
components, outlet ground contact).
During operation of electrical devices, certain parts of these devices are necessarily under
dangerous voltage.
Ignorance of the safety instructions may result in severe injury or property damage.
Particularly the warning notes in the corresponding Operating Instructions must be strictly
observed.
1.1.2
Introduction
What is EMC ?
Electromagnetic compatibility (EMC) is the ability of an electrical device to function, fault-free
in a specified electromagnetic environment without influencing the environment in an
inadmissible fashion.
This design and EMC Directive supplements the documentation on the individual
components.
The SIMATIC TDC control system consists of individual components (e.g. racks, modules,
interface modules, operator control panels, position transmitters). The components can be
installed in the widest range of system configurations to suit individual requirements. In an
environment that contains distributed components it is imperative not to neglect interference
and to conform with special installation and EMC requirements of the plant.
EMC therefore represents a quality feature for
● Intrinsic immunity to interference: Resistance against internal electrical disturbance
variables
● Immunity to external interference: Resistance of the system against external
electromagnetic disturbance variables
● Degree of interference emission: Environmental effects caused by electromagnetic
radiation
14
CAUTION
WARNING
SIMATIC TDC hardware
System Manual, 12/2013, A5E01114865-07
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