Endress+Hauser Levelflex M FMP40, Руководство по эксплуатации

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Installation Levelflex M FMP40 with HART/4...20 mA
18 Hauser
3.4.1 Electronics
The process variables are output using the dynamic variables of the HART protocol. The process
variables can be flexibly assigned to the dynamic variables (primary, secondary, tertiary, quaternary
value).
3.4.2 Using the 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 to the individual parameters in the HMX50.
L00-FMP40xIx-04-00-00-en-004
Fig. 2: 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: TI429F and BA371F.
Dynamic variables of the
HART protocol Possible process variable assignment Comment
Primary value (PV) • Interface (default)
• Total level
• Thickness of the upper medium (upper phase)
The "primary value" is permanently
assigned to the 4 to 20mA current
output
Secondary value (SV) • Total level (default)
• Interface
• Thickness of the upper medium (upper phase)
—
Tertiary value (TV) • Thickness of the upper medium
(upper phase)
(default)
• Interface
• Total level
• Amplitude of the total level signal
—
Quaternary (4
th
) value (QV) Amplitude of the interface level signal No variable assignment
Strom a usg a ng 1
Rel a is 1
Strom a usg a ng 2
Strom a usg a ng 3
Rel a is 2 Rel a is 2
versorgung
Eing a ng Eing a ng
1
2
3
4
5
6
7
8
9
11
12
13
1 4
15
19
20
21
16
17
18
22 23 2 4
2 4V DC
10
H A R T Loop Converter H M X 50
Leve l f l ex M
H A R T
Commubox
FXA191/195
+
-
+
Current output 1
R e l ay 1
Current output 2
Current output 3
R e l ay 2
Power
supp
l y
I nput
Power
HART