37
FEM630 |
ELECTROMAGNETIC FLOWMETER | OI/FEM630-EN REV. A
6 . . .Electrical connections
. . .Pin assignment
Electrical data for inputs and outputs
Note
• An additional document with Ex safety instructions is
available for measuring systems that are used in
potentially explosive atmospheres.
• Ex safety instructions are an integral part of this manual.
As a result, it is crucial that the installation guidelines and
connection values it lists are also observed. The icon on
the name plate indicates the following:
Current output Uco / 32, 31 / 32
Can be configured for outputting mass flow and volume
flow via the on-site software.
Power supply
*Source voltage U
q
depends on the load R
B
and must be within the
permissible range.
For information on communication via the HART protocol,
refer to
HART® communication
on page 48.
AC power supply
Terminals
L / N
Operating voltage
100 to 240 V AC (−15 % / +10 %), 47 to 64 Hz
Power consumption
S
max: < 20 VA
Power-up current
18.4 A, t < 3 ms
DC voltage supply
Terminals
1+ / 2−
Operating voltage
16.8 to 30 V DC
Ripple
< 5 %
Power consumption
Pmax: < 20 W
Power-up current
21 A, t < 10 ms
Current output
Active
Passive
Terminals
Uco / 32
31 / 32
Output signal
4 to 20 mA or
4 to 12 to 20 mA switchable
4 to 20 mA
Load RB
250 Ω ≤ RB ≤ 300 Ω
250 Ω ≤ RB ≤ 600 Ω
Source voltage U
q
* —
13 V ≤ Uq ≤ 30 V
Measuring error
< 0.1 % of measured value
Resolution
0.4 µA per digit
Insulation
The current output and digital outputs are electrically
isolated.
Current output Uco / 32, active
Current output 31 / 32, passive
Permissible source voltage U
q
for passive outputs in relation to load
resistance R
B
where I
max
= 22 mA. (unreadable type) = Permissible range
A
B
Figure 39
(I = internal, E = external, R
B
= load)
Figure 40 Source voltage for passive outputs
G11596-02
+
-
A
B
I
E
32-
U
co
32-
I
E
31+
R
B
R
B
U
q
31+
U
co
+
-
G10323-02
0
0
100
200
300
400
500
600
5
10
15
20
25
30
35
RB
[Ω]
Uq [V]
