Electrical connection
Levelflex FMP55 HART
44
Hauser
HART loop converter HMX50
The dynamic variables of the HART protocol can be converted into individual 4 to 20 mA
sections using the HART loop converter HMX50. The variables are assigned to the current
output and the measuring ranges of the individual parameters are defined in the HMX50.
1
2
3
4
5
6
7
8
9
11
12
13
14
15
19
20
21
16
17
18
22 23 24
24V DC
10
HMX50
HART
FXA195
+
-
+
HART
A0023287
20
Connection diagram for HART loop converter HMX50 (example: passive 2-wire device and current outputs
connected as power source)
The HART loop converter HMX50 can be acquired using the order number 71063562.
Additional documentation: TI00429F and BA00371F.
7.1.2
Cable specification
•
Devices without integrated overvoltage protection
Pluggable spring-force terminals for wire cross-sections 0.5 to 2.5 mm
2
(20 to 14 AWG)
•
Devices with integrated overvoltage protection
Screw terminals for wire cross-sections 0.2 to 2.5 mm
2
(24 to 14 AWG)
• For ambient temperature T
U
≥60 °C (140 °F): use cable for temperature T
U
+20 K.
HART
• A normal device cable suffices if only the analog signal is used.
• A shielded cable is recommended if using the HART protocol. Observe grounding concept
of the plant.
• For 4-wire devices: Standard device cable is sufficient for the power line.