Electrical Connection - Siemens PROFIBUS PA SIPART PS2 Manual

3.4

Electrical Connection

.
!
SIPART PS2 PA Manual
A5E00127926-03
NOTE
Any necessary options modules must be installed before electrical
connection (see chapter 2.5, page 30).
N.B.: The transmission ratio selector can only be set when the
positioner is open. Therefore check this setting before closing the
positioner.
WARNING
The specifications of the examination certificate valid in your country
must be observed. Laws and regulations valid in your country must be
observed for the electrical installation in explosions hazardous areas.
In Germany these are for example:
-- Working reliability regulations,
-- Regulations for installing electrical equipment in hazardous areas,
DIN EN 60079--14 (in the past VDE 0165, T1).
It should be checked whether the available power supply, insofar as
this is required, is compliant with the power supply specified on the
rating plate and specified in the examination certificate valid in your
country.
If the intrinsically safe version is operated with a higher operating vol-
tage by mistake, the positioner must no longer be used for intrinsically
safe application.
The explosion-proof version of the positioner may not be connected to
a PROFIBUS in an intrinsically safe (Ex i) version!
The explosion-proof positioner may only be supplied with electrical
power in areas in which the atmosphere may be potentially explosive
when the housing is closed.
The feed-though openings in the explosion-proof version for the
electronic connections must be sealed with EEX-d certified cable
glands or EEx-d certified plugs or an ignition lock must be mounted at
a maximum distance of 46 cm (18 inches) when using the
"conduit"-system.
The plastic housing is metal lined to increase the electromagnetic
compatibility (EMC) against high frequency radiation. This screen is
connected electrically to the threaded bushes shown in figure 3-12,
page 56.
The specified noise immunity and noise emission are only ensured if
the bus shield is fully effective.
This includes connecting the shields with the metallic connections of
the positioner with PROFIBUS PA, but also routing the shield to the
terminal boxes, distributors, DP/PA coupler or DP/PA link.
Preparing for Operation
55