Siemens SIMODRIVE 611 Planning Manual page 10

Foreword
ESDS information
Electrostatic discharge sensitive devices
Components which can be destroyed by electrostatic discharge are individual
components, integrated circuits, or boards, which when handled, tested or
transported, could be destroyed by electrostatic fields or electrostatic di-
scharge. ESDS (ElectroStatic Discharge Sensitive Devices).
Handling ESDS boards:
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When handling components which can be destroyed by electrostatic
discharge, it should be ensured that personnel, the work station and
packaging are well grounded.
Electronic boards should only be touched when absolutely necessary.
Components may only be touched, if
– you are continuously grounded through an ESDS bracelet,
– you are wearing ESDS shoes or ESDS shoe grounding strips in
conjunction with an ESDS floor surface.
Boards may only be placed on conductive surfaces (desk with ESDS
surface, conductive ESDS foam rubber, ESDS packing bag, ESDS trans-
port containers).
Boards may not be brought close to data terminals, monitors or television
sets (a minimum of 10 cm should be kept between the board and the
screen).
Boards may not be brought into contact with materials which can be
charged–up and which are highly insulating, e. g. plastic foils, insulating
desktops, articles of clothing manufactured from man–made fibers.
Measuring work may only be carried out on the boards, if
– the measuring equipment is grounded (e.g. via the protective
conductor), or
– for floating measuring equipment, the probe is briefly discharged before
making measurements (e. g. a bare control housing is touched).
SIMODRIVE 611 Planning Guide (PJU) – 05.01 Edition
05.01
 Siemens AG 2001 All rights reserved
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