5
.
3
W
iring plan
O
verview
+ -
1 2
+ -
3 4
18 17 16 15 14 13 12 11 10 9 8 7 6 5
N- L1+
on
1
2
1
2
%
1
2
3
4
5
6
F
ig
.
13
:
T
erminal assignment
VEGAMET
381
1
M
eas
.
data input
/
sensor power supply with sockets
for
VEGACONNECT
2
C
urrent output
3
F
ail safe relay
4
R
elay
2
5
R
elay
1
6
V
oltage supply
I
nformation
:
I
n the menu
,
it is possible to switch over
between active and passive operation of
the measurement data input
:
l
I
n active mode
,
VEGAMET
381
provides the
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 trans
-
ducers without separate power supply
(
sen
-
sors in two
-
wire version
).
l
I
n passive mode the sensors are not powered
,
only the measured value is transmitted
.
T
his
input is for connection of transmitters with own
,
separate voltage supply
(
sensors in four
-
wire
version
).
T
he
VEGAMET
381
can be also
connected into the existing circuit like a normal
current meter
.
T
ip
:
F
or parameter adjustment of connected
HART
sensors
,
the sockets are integrated
in the terminals of the meas
.
data input
.
A
VEGACONNECT
can be directly plugged in
without the need of an additional
HART
resistor
.
6
S
etup with the integrated
indicating and adjustment
unit
6
.
1
A
djustment system
T
he integrated indicating and adjustment unit is for
measured value display
,
adjustment and diagnosis
of
VEGAMET
381
.
I
ndication and adjustment is
carried out in the front via a clear
LC
-
display and a
function switch as well as two keys
.
T
o open the cover
,
insert a screwdriver in the two
slots on the top and turn it slightly
.
22
VEGAMET
381
S
etup with the integrated indicating and adjustment unit
27567
-
01
-
070216
