03.2004
Definitions and Warnings
Siemens AG
6SE7087-7CX87-2DA0
SIMOVERT MASTERDRIVES
Unité de Freinage / Braking Unit
1-3
CAUTION
Components which can be destroyed by electrostatic
discharge (ESD)
The converters contain components which can be destroyed by electrostatic discharge. These
components can be easily destroyed if not carefully handled. If you have to handle electronic
boards please observe the following:
♦
Electronic boards should only be touched when absolutely necessary
♦
The human body must be electrically discharged before touching an electronic board
♦
Boards must not come into contact with highly insulating materials - e.g. plastic foils,
insulated desktops, articles of clothing manufactured from man-made fibers
♦
Boards must only be placed on conductive surfaces
♦
When soldering, the soldering iron tip must be grounded
♦
Boards and components should only be stored and transported in conductive packaging
(e.g. metalized plastic boxes, metal containers)
♦
If the packing material is not conductive, the boards must be wrapped with a conductive
packaging material, e.g. conductive foam rubber or household aluminum foil.
The necessary ECB protective measures are clearly shown in the following diagram
:
a = Conductive
floor
surface
d = ESD
overall
b = ESD
table
e = ESD
chain
c = ESD shoes
f = Cubicle ground connection
Standing
Sitting
Standing / Sitting
a
b
e
d
c
d
a
c
d
b
c
a
e
f
f
f
f
f
