Siemens Simodrive 611 Configuration Manual page 15

Forword
ESDS information
and instructions
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xiv
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
discharge. These components are referred to as ESDS (ElectroStatic
Discharge Sensitive Devices).
Handling ESDS modules:
S
When handling devices which can be damaged by electrostatic discharge,
personnel, workstations and packaging must be well grounded!
S
Generally, electronic modules may not be touched unless work has to be
carried out on them.
S
Personnel may only touch components if
– they are continuously grounded through ESDS wristlets,
– they wear ESDS shoes, ESDS shoe grounding strips in conjunction with
an ESDS floor surface.
S
Boards/modules must only be placed on conductive surfaces (table with
ESDS surface, conductive ESDS foam, ESDS packaging, ESDS transport
container).
S
Modules may not be brought close to data terminals, monitors or television
sets (minimum clearance to the screen > 10 cm).
S
Do not bring ESDS–sensitive modules into contact with chargeable and
highly–insulating materials, such as plastic sheets, insulating table tops or
clothing made of synthetic materials.
S
Measuring work may only be carried out on the components if
– the measuring unit is grounded (e.g. via a protective conductor) or
– when floating measuring equipment is used, the probe is briefly
discharged before making measurements (e.g. a bare–metal control
housing is touched).
Warning
If static discharge occurs on surfaces or interfaces that cannot be easily
accessed, malfunctions and/or defects will result.
Warning
When the system boots, this represents a critical operating state with increased
risk. In this phase, especially when activating drives, it is not permissible that
personnel are close to the hazardous area.
Warning
After hardware and/or software components have been modified or replaced, it
is only permissible that the system runs–up and the drives are activated with
the protective devices closed (could possibly result in death). Personnel shall
not be present within the danger zone.
It may be necessary to carry–out a new, partial or complete acceptance test
after every change or replacement.
Before entering the hazardous area, it should be carefully checked that all of
the drives exhibit stable behavior by briefly moving the drives in both directions
(+/–).
SIMODRIVE 611 Configuration Manual (PJU) – 02/2012 Edition
© Siemens AG 2012 All Rights Reserved
02.07
05.01