Vega VEGAMET 391, Руководство по эксплуатации, Страница: 57 / 68

D igital input
Q
uantity
4
x digital input
T
ype of input
P
assive
S
witching threshold
-
L
ow
-
3
…
5
V DC
-
H
igh 11
…
30
V DC
M
ax
.
input voltage
30
V DC
M
ax
.
input current
30
m
A
M
ax
.
sampling rate
10
H
z
R elay outputs
Q
uantity
6
x operating relay
F
unction
S
witching relay for level
,
fault signal or pulse relay
for
fl
ow
/
sampling pulse
C
ontact
F
loating spdt
C
ontact material
A
g
S
n
O
2
,
hard gold
-
plated
T
urn
-
on voltage min
.
10
m
V DC ,
max
.
250
V AC /
60
DC
S
witching current min
.
10
µ
A DC ,
max
.
3
A AC ,
1
A DC
B
reaking capacity min
.
50
m
W ,
max
.
500
VA ,
max
.
54
W DC (
with
U
less than
40
V ) 1
)
M
in
.
programmable switching hysteresis
0
.
1
%
M
ode pulse output
-
P
ulse length 350 ms
C urrent output
Q
uantity
1
x output
F
unction
C
urrent output for level or
fl
ow
/
sampling pulse
R
ange
0
/
4
…
20
m
A ,
20
…
0
/
4
m
A
R
esolution
1
µ
A
M
ax
.
load
500
Ω
F
ault signal
(
switch over
)
0
;
<
3
.
6
;
4
;
20
;
20
.
5
;
22
m
A
A
ccuracy
-
S
tandard
±
16
µ
A (
0
.
1
%
from
4
…
20
m
A )
-
with
EMC
interferences
±
80
µ
A (
0
.
5
%
of
4
…
20
m
A )
T
emperature error relating to
20
m
A
0
.
005
% / K
M
ode pulse output
1
)
I
f inductive loads or stronger currents are switched through
,
the gold plating
on the relay contact surface will be permanently damaged
. T
he contact is
then no longer suitable for switching low
-
level signal circuits
.
VEGAMET
391
•
4
…
20
m
A / HART
signal conditioning instrument
57
11
S
upplement
36032
-
EN
-
091116