Technical information
8.2 Directives and declarations
SIMATIC IPC477D, IPC477D PRO
Operating Instructions, 11/2016, A5E31347228-AF
187
Protective measures against discharge of static electricity
● Disconnect the power supply before you install or remove modules which are sensitive to
ESD.
● Pay attention to good grounding:
– When handling electrostatical sensitive devices, make sure that persons, the
workstation and devices, tools and packaging used are properly grounded. This way
you avoid static discharge.
● Avoid direct contact:
– As a general rule, do not touch electrostatic sensitive devices, except in the case of
unavoidable maintenance work.
– Hold the modules at their edge so that you do not touch the connector pins or
conductor paths. This way, the discharge energy does not reach and damage the
sensitive components.
– Discharge your body electrostatically before you take a measurement at a module. Do
so by touching grounded metallic parts. Always use grounded measuring instruments.
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