Preface
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E Siemens AG, 2004. All rights reserved
SINAMICS S120 Installation and Start-Up Manual, 12/04 Edition
Notes on ESD
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Caution
An electrostatic-sensitive device (ESD) is an individual component, integrated
circuit, or module that can be damaged by electrostatic fields or discharges.
Regulations for handling ESD components:
S When handling components, make sure that personnel, workplaces, and
packaging are well earthed.
S Electronic components must only be handled by personnel in ESD areas with a
conductive floor when:
– These persons are grounded with an ESD wrist band
– They are wearing ESD shoes or shoe grounding strips.
S Electronic boards should only be touched if absolutely necessary. They must
only be handled on the front panel or, in the case of printed circuit boards, at
the edge.
S Electronic boards must not come into contact with plastics or items of clothing
containing synthetic fibers.
S Electronic modules must only be placed on conductive surfaces (table with
ESD surface, conductive ESD foam, ESD packaging, ESD transport container).
S Electronic modules must be kept at a distance from data display equipment,
monitors, and televisions (minimum distance from screen: >10 cm).
S Measurements must only be taken on boards when:
– The measuring device is grounded (with a protective conductor, for
example).
– The measuring head has been temporarily discharged before
measurements are taken on a floating measuring device (e.g. touching a
bare metal controller housing).
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