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2 Operational Safety User Manual HS-50 2.7 ESD guidelines Software-V ersion 5.01 E dition 01/99 84 a swi tch cabi net, a wat er pipe , etc.) . Do not allo w modul es with char geable a nd hig hly insula ting ma terials…
User Manual HS-50 2 Operational Safety
Software-Version 5.01Edition 01/99 2.7 ESD guidelines
83
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Almost all of the modules in use today are equipped with highly integrated MOS blocks and com-
ponents. The manufacturing techniques used mean that these electronic components are ex-tre-
mely sensitive to overvoltage and thus to electrostatic discharge.
The abbreviation for such modules is ’ESD’(Electrostatic Sensitive Device). This is used interna-
tionally, although the German abbreviation ’EGB’ may also be seen.
The following symbol on cabinet rating plates, racks or packaging indicates that components
which are sensitive to electrostatic discharge have been used and thus that the modules concer-
ned are also touch-sensitive.
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Å Most plastics can easily become charged and must therefore be kept away from at-risk com-
ponents.
Å Always ensure that people, the workplace and packaging are safely earthed when handling
electrostatic sensitive components.
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Do not touch electronic modules unless it is absolutely essential to do so in order to carry out other
work. If it is necessary, make sure that you do not touch the pins or printed conductors when you
pick up flat modules.
Do not touch components unless
Å you are constantly earthed by an ESD wrist strap or
Å you are wearing ESD shoes or ESD shoe earthing strips on an ESD floor.
Always discharge yourself before you touch an electronic module. To do this, simply touch a con-
ductive and earthed object immediately before you touch the module (such as unpainted parts of
ESDs can be destroyed by voltages and power levels that are far below the level
that can be perceived by humans. Such voltages occur if a person touches a com-
ponent or module without earthing themselves. Components that are exposed to
such overvolt-ages do not generally appear to be defective immediately - incorrect
behavior starts
after the component or module has been in operation for some time.
2 Operational Safety User Manual HS-50
2.7 ESD guidelines Software-Version 5.01 Edition 01/99
84
a switch cabinet, a water pipe, etc.).
Do not allow modules with chargeable and highly insulating materials to touch one another, e.g.
plastic films, insulating table surfaces or items of clothing made from synthetic fibers.
Always place the modules on a conductive surface (table with an ESD coating, conductive ESD
foam, ESD bag or container).
Do not bring modules near visual display units, monitors or televisions. Keep them at least 10 cm
away from the screen.
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Do not take measurements on such modules unless
Å the measuring device is earthed (e.g. via PE conductors) or
Å you discharge the measuring head just before taking measurements with a potential-free mea-
suring device (e.g. by touching an unpainted metal part of the controller casing).
Å Always use an earthed soldering iron if you carry out any soldering work.
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Å Always store modules and components in conductive packaging (e.g. metallized plastic bags
or metal sleeves) and dispatch them in conductive packaging.
If the packaging is not conductive, place the modules in a conductive envelope before pack-
aging. (Use ESD bags, domestic aluminum foil or paper, for example. NEVER use plastic bags
or film).
Å If the module has integral batteries, ensure that the conductive packaging does not touch or
short-circuit the battery terminals and, if necessary, first cover the terminals with insulating tape
or material.
User’s Manual SIPLACE HS-50 3 Introduction and Basic Concepts
Software Version SR.501.xx Edition 01/99
85
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This chapter describes the machine displays and controls together with the components of the
graphic user interface.
It also provides a basic understanding of the use of the user interface and its functions.
NOTE
It is essential for operators who are not yet familiar with the user interface of the station
computer software (SC software) to read this chapter.