Siemens LOGO! Series Manual page 493

CAUTION
Grounding measures
There is no equipotential bonding without grounding. An electrostatic charge is not
discharged and may damage the ESD.
Protect yourself against discharge of static electricity. When working with electrostatic
sensitive devices, make sure that the person and the workplace are properly grounded.
Protective measures against discharge of static electricity
● Disconnect the power supply before you install or remove modules which are sensitive to
● Pay attention to good grounding:
● Avoid direct contact:
Basic Panels
Operating Instructions, 04/2012, A5E02421799-03
ESD.
– When handling electrostatical sensitive devices, make sure that persons, the
workstation and devices, tools and packaging used are properly grounded. In this
manner, you avoid static discharge.
– 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. In 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.
Technical specifications
8.2 Directives and declarations
121