Electrostatically Sensitive Devices (Esd) - Siemens SINUMERIK 840D sl Commissioning Manual

08/2005
!
Important
For further information about suppression measures and the connection of
shielded cables see
References: /EMC/EMC Directive
1.4.2

Electrostatically sensitive devices (ESD)

Caution
The modules contain electrostatically-sensitive devices. Discharge yourself of
electrostatic energy before touching the components. The easiest way to do this
is to touch a conductive, grounded object immediately beforehand (for example,
the bare metal part of a control cabinet or the protective ground contact of a
socket outlet).
!
Important
Handling of modules containing devices sensitive to electrostatic discharge:
•
When handling electrostatically sensitive devices, make sure that operator,
workplace and packing material are properly grounded.
•
Generally, electronic modules must not be touched unless work has to be
carried out on them. When handling PC boards make absolutely sure that
you do not touch component pins or printed conductors.
•
Components must only be touched if
- You are permanently grounded with an ESD arm band
- You are wearing ESD shoes or ESD shoe grounding strips that are in
contact with an ESD floor.
•
Modules must be placed on a conductive surface (table with ESD surface,
conductive ESD foam plastic, ESD packing bag, ESD transport container).
•
Never place modules in the vicinity of display units, monitors, or television
sets (minimum distance < 10 cm).
•
Modules must never be brought into contact with statically chargeable and
highly insulating materials, such as plastic sheeting, insulating table tops,
clothing made of synthetic fibers.
•
Measurements of the module must only be performed if
- The measuring instrument is grounded (e.g., via a protective conductor) or
- Before measuring with a potential-free measuring device, the measuring
head is discharged briefly (e.g., touch unpainted metal on the control
housing).
© Siemens AG, 2005. All rights reserved
SINUMERIK 840D sl/840D/840Di/810D HMI Installation and Start-Up Guide (IAM) – 08/2005 Edition
Starting Up HMI Embedded (IM2)
1 General Preparations
IM2/1-11