ESD Guidelines
B.1 ESD Guidelines
SIMATIC Rack PC IL 43
B-2
Operating Instructions, Edition 09/2005, A5E00432875-01
Electrical charge
Anyone who is not connected to the electrical potential of their surroundings can be
electrostatically charged.
The figure below shows the maximum electrostatic voltages that can accumulate in a person
who is operating equipment when he/she comes into contact with the materials indicated.
These values correspond with specifications to IEC 801-2.
Figure B-1
Electrostatic voltages on an operator
Basic protective measures against discharge of static electricity
•
Ensure good equipotential bonding:
When handling electrostatic sensitive devices, ensure that your body, the workplace and
packaging are grounded. This helps you avoid static charge.
•
Avoid Direct Contact
As a general rule, only touch electrostatic sensitive devices when this is unavoidable (e.g.
during maintenance work). When you touch modules, make sure that you do not touch
either the pins on the modules or the printed conductors. This prevents any discharge of
static electricity to sensitive component and thus avoids damage.
Discharge electrostatic energy from your body before you perform measurements on a
module. To do so, touch a grounded metallic object. Always use grounded measuring
instruments.
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