VEGA VEGAMET 515 - Manual (Page 11)

VEGAMET 515 11
Electrical connection
3 Electrical connection
3.1 Connection instructions
Note the following instructions for electrical
connection:
- The connection must be made acc. to the
local installation standards (e.g. in Ger-
many acc. to the VDE-regulations).
- The wiring between VEGAMET and sensor
can be done with standard two-wire cable.
- If strong electromagnetic interference is
expected, screened cable is recom-
mended. The screening must be earthed
on both ends.
- The line resistances stated in the technical
data must not be exceeded.
- If overvoltages are expected, we recom-
mend a sensor electronics with integrated
overvoltage protection or the installation of
VEGA overvoltage arresters.
- The voltage supply of VEGAMET must
provide extra-low voltage to ensure pro-
tection class II. When using VEGASTAB
593, a reliable separation from the mains
circuits acc. to DIN VDE 0106, part 101 is
ensured.
3.2 Connection instructions for
Ex approved applications
The signal conditioning instruments must be
generally mounted outside the hazardous
areas or special Ex protective measures
must be taken.
Ex separating chamber
To ensure sufficient "air and creep distance“,
an Ex separating chamber must be mounted
to the connections of VEGAMET. Lead the
cables through the Ex separating chamber
and connect them. Fasten the Ex separating
chamber with the lower screw. Note the oper-
ating instructions of the carrier BGT 596
Ex.M.
Protection in Ex applications
In Ex applications, protection class IP 20
must be maintained. To do this, cover the
gaps or unused module plugs with suitable
blind covers.
Mounting in carriers
If you mount your VEGAMET with Ex ap-
proval in a carrier, you have to use a VEGA-
Ex module plug. Keep a distance of at least
10 mm (2 TE) to module cards of other manu-
facturers. If you want to mount VEGAMET at
the utmost left position in the carrier, you have
to mount a blind cover with at least 20 mm
width (4 TE) in front of the module plug of the
instrument.
CONNECT
%
100
+ -
OK ESC
on
1 2
Blind cover (4 TE)