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SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
ElectroStatic Discharge Sensitive Devices
Note
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 discharge. These components are referred to as
ESDS (ElectroStatic Discharge Sensitive Devices).
Handling ESDS boards:
When handling devices which can be destroyed by electrostatic
discharge, personnel, workstations and packaging must be well
grounded!
Electronic boards should only be touched when absolutely
necessary.
Personnel may only come into contact with the components, if
– they are continuously grounded through ESDS wristlets,
– they wear ESDS shoes, ESDS shoe grounding strips in
conjunction with an ESDS floor surface.
Boards may only be placed on conductive surfaces (table with
ESDS surface, conductive ESDS foam rubber, ESDS packing bag,
ESDS transport containers).
Boards may not be brought close to data terminals, monitors or
television sets (minimum clearance to the screen > 10 cm).
Boards may not be brought into contact with highly insulating
materials which can be statically charged, e.g. plastic foils,
insulating desktops, clothing manufactured from man–made fibers.
Measuring work may only be carried out on the boards, if
– the measuring unit is grounded (e.g. via protective conductor),
or
– for floating measuring equipment, the probe is briefly discharged
before making measurements (e.g. a bare–metal control
housing is touched).
Only touch control boards, option modules and memory modules at
the front panel or at the edge of the PC boards.
ESDS information
and instructions
Foreword
06.04
