Siemens SIPLUS PSU Operating Instructions Manual page 4

Electrostatic Sensitive Devices ESD
Almost all electronic devices and modules are equipped with highly integrated components or ele-
ments in MOS technology. For technological reasons, these electronic components are very sensitive
to overvoltage and, consequently, to electrostatic discharge.
The short designation for such electrostatic sensitive components/modules is: "ESD", which is the
commonly used international abbreviation "ESD" (Electrostatic Sensitive Device).
NOTICE
Electrostatic Sensitive Devices ESD can be damaged!
The presence of this symbol on cabinet, rack or packaging labels indicates the
use of electrostatically sensitive devices and thus the touch sensitivity of the
respective modules. When touching the modules these can be damaged. This
can lead to an immediate failure or to a reduction of the life time of the mod-
ules.
Open the packing only at an ESD workplace. Discharge the body of your own
by establishing of an electrical connection to the earth potential before touch-
ing the module.
These modules can be destroyed by voltage and energy far below the limits of human perception.
Voltages of this kind occur as soon as a device or an assembly is touched by a person who is not
electrostatically discharged.
Components which were subject to such overvoltage are usually not recognized immediately as being
defective, because the malfunction does not occur until after a longer period of operation.
When working on the system, the following points must be followed exactly to ensure the safe dis-
charge of electrostatic charges:
∂ Before performing any work on the system, create a ground connection by wearing a
wrist band.
∂ Always place or work on components on a grounded, conductive surface.
∂ Only transport components in suitable protective bags.
Tolerances of the prescribed tightening torques
Note:
If not indicated differently, the tolerances of the prescribed tightening torques in these
operating instructions are ±10 %.
SIPLUS PSU Power Supply Unit
Copyright (C) Siemens AG 2018
A5E00854207E
V 8.00 released
SIPLUS PSU (6DL3500-8BA)
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2018-05-03