Vega VEGAMIP 61, Руководство по эксплуатации

Страница: 23 / 48

5
C onnecting to power supply
5
.
1
P reparing the connection
A lways keep in mind the following safety instructions :
l
C
onnect only in the complete absence of line voltage
l
I f voltage surges are expected , install overvoltage arresters
C onnect the operating voltage according to the following diagrams .
T ake note of the general installation regulations . A s a rule , connect
VEGAMIP
61
to vessel ground ( PA ), or in case of plastic vessels , to
the next ground potential . O n the side of the instrument housing there
is a ground terminal between the cable entries
. T
his connection serves
to drain o ff electrostatic charges
. I
n
E
x applications
,
the installation
regulations for hazardous areas must be given priority .
T he data for power supply are speci fi ed in chapter " T echnical data " .
T he instrument is connected with standard two - wire cable without
screen . I f electromagnetic interference is expected which is above the
test values of EN
61326
for industrial areas , screened cable should be
used
.
U se cable with round cross - section . A cable outer diameter of
5
…
9
mm
(
0
.
2
…
0
.
35
in ) ensures the seal e ff ect of the cable gland . I f you are
using cable with a di ff erent diameter or cross - section , exchange the
seal or use a suitable cable gland .
C
over all housing openings conforming to standard according to
EN
60079
-
1
.
5
.
2
C
onnection procedure
T he voltage supply and signal output are connected via the spring -
loaded terminals in the housing .
P roceed as follows :
1
U nscrew the housing cover
2
L oosen compression nut of the cable entry
3
R emove approx .
10
cm (
4
in ) of the cable mantle , strip approx .
1
cm (
0
.
4
in ) of insulation from the ends of the individual wires
S afety instructions
V oltage supply
C onnection cable
C onnection technology
C onnection procedure
VEGAMIP R
61
• - T ransistor
23
5
C onnecting to power supply
40694
-
EN
-
120228