Siemens SIMATIC S5-115U User Manual page 651

Simatic s5 series cpu 941-7ub11 cpu 942-7ub11 cpu 943-7ub11 and cpu 943-7ub21 cpu 944-7ub11 and cpu 944-7ub21
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S5-115U Manual
The following Figure once again illustrates the precautions for handling electrostatically sensitive
devices.
a
Conductive flooring material
b
Table with conductive, grounded surface
c
ESD footwear
d
ESD smock
e
Gounded ESD wristband
f
Grounded connection of switchgear cabinet
g
Grounded chair
a
Taking measurements and working on ESD modules
Measurements may be taken on electrostatic sensitive devices only if
the measuring device is grounded (e.g. via protective conductor) or
the tip of the isolated measuring tool has previously been discharged (e.g. by briefly touching
grounded metal parts).
EWA 4NEB 811 6130-02b
Active and Passive Faults in Automation Equipment
b
e
g
c
Figure D-1. ESD Measures
d
f
D-5

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