Electrical
connections
CI/FEX300/FEX500-EN
FEX300, FEX500
EN - 41
5.6
Terminal connection diagrams
5.6.1 Devices with HART protocol
Important (Note)
An additional document with Ex safety instructions is available for measuring systems that are
used in explosion hazardous areas. As a result, it is crucial that the specifications and data it
lists are also observed.
G00
4
7
4
31 32
A
2
4 V
51 52 81 82
4
1
4
2
L
N
1
+
2
-
M1 M2
D
1
D
2 3 2S E2 E1 1S
M1 M2
D
1
D
2 3 2S E2 E1 1S
SE
B
{
{
{
{
{
2
3
4
5
1
PE
7
8
9
10 11
12 13
6
6
<
50
m
(200
m
)
<
16
4 ft
(656
ft
)
SE
+
-
+
-
+
-
+
-
Fig. 38
A
Transmitter
B
Flowmeter sensor
1
Power supply
See name plate
2
Current output (terminals 31 / 32)
The current output can be operated in "active" or "passive" mode.
•
Active: 4 ... 20 mA, HART protocol (standard), load: 250
Ω
≤
R
≤
650
Ω
•
Passive: 4 ... 20 mA, HART protocol (standard), load: 250
Ω
≤
R
≤
650
Ω
Supply voltage for the current output: minimum 11 V, maximum 30 V at terminals 31 / 32.
3
Digital output DO1 (terminals 51 / 52) (pulse output or digital output)
Function can be configured locally as "Pulse Output" or "Digital Output" using software. Factory setting is "Pulse Output".
The output can be configured as an "active" or "passive" output (in the case of the transmitter with the dual-compartment housing, the
output is configured using the software; in the case of the transmitter with the single-compartment housing, it is configured by means of
jumpers on the transmitter backplane).
Configuration using software.
•
Configuration as pulse output.
Max. pulse frequency: 5250 Hz.
Pulse width: 0.1 … 2000 ms.
The pulse factor and pulse width are interdependent and are calculated dynamically.
•
Configuration as contact output
Function: System alarm, empty pipe alarm, max. / min. alarm, flow direction signaling, other
•
Configuration as "active" output
U = 19 ... 21 V, I
max
= 220 mA , f
max
≤
5250 Hz
•
Configuration as "passive" output
U
max
= 30 V, I
max
= 220 mA, f
max
≤
5250 Hz
4
Digital input (terminals 81 / 82) (contact input)
Function can be configured locally using software:
External output switch-off, external totalizer reset, external totalizer stop, other
Data for the optocoupler: 16 V
≤
U
≤
30 V, Ri = 2 k
Ω
5
Digital output DO2 (terminals 41 / 42) (pulse output or digital output)
Function can be configured locally as "Pulse Output" or "Digital Output" using software.
Factory setting is "Digital Output", flow direction signaling.
The output is always a "passive" output (optocoupler).
Data for the optocoupler: U
max
= 30 V, I
max
= 220 mA, f
max
≤
5250 Hz
6
Functional ground
7
Yellow
8
Brown
9
Green
10
Red
11 Blue
12
Orange
13 Violet
Important (Note)
For detailed information about grounding the transmitter and the flowmeter sensor, please refer to the section titled
"Installation / grounding".
