Vega VEGAMET 391, Руководство по эксплуатации, Страница: 13 / 68

7
C
onnect power supply
(
switched o
ff )
to terminal 13
/
14
8
I
f necessary
,
connect relays or other outputs
9
P
lug in terminal strip
2
on the lower side of the instrument
10
F
or connection of additional relais to terminal strip
3
,
you have to
proceed as described before
T
he electrical connection is
fi
nished
.
R
emember that with
E
x applications
,
the
E
x separating wall must be
plugged onto the upper side of the instrument before setup
.
I nformation :
l
O
n the active input
(
terminal 1
/
2
), VEGAMET
391 provides power
for the connected sensors
. P
ower supply and measurement data
are transmitted over the same two
-
wire cable
. T
his mode is
provided for connection of measuring transducers without sepa
-
rate operating voltage
(
sensors in two
-
wire version
).
l
O
n the passive input
(
terminals
5
/
6
),
the sensors are not supplied
with energy
-
only the measured value is transmitted
. T
his input is
for sensors with their own separate operating voltage
(
sensors in
four
-
wire version
). O
n a
VEGAMET
391
in
E
x version
,
the passive
input is not available due to approval
/
technical reasons
.
VEGAMET
391
•
4
…
20
m
A / HART
signal conditioning instrument
13
5
C
onnecting to power supply
36032
-
EN
-
091116