Endress+Hauser Levelflex FMP55 Operating Instructions Manual page 39

Levelflex FMP55 HART
Endress+Hauser
4-wire: 4-20mA HART (90 to 253 V
13
12
11
10
≥250 Ω
1 2 3
 12 Terminal assignment 4-wire; 4-20mA HART (90 to 253 V
1 Evaluation unit, e.g. PLC
2 HART communication resistor (≥ 250 Ω): Observe maximum load
3 Connection for Commubox FXA195 or FieldXpert SFX350/SFX370 (via VIATOR Bluetooth modem)
4 Analog display device: Observe maximum load
5 Signal cable including screening (if required), observe cable specification
6 Protective connection; do not disconnect!
7 Protective earth, observe cable specification
8 4...20mA HART (active): Terminals 3 and 4
9 Supply voltage: Terminals 1 and 2
10 Supply voltage: Observe terminal voltage, observe cable specification
11 Terminal for potential equalization
12 Cable entry for signal line
13 Cable entry for power supply
CAUTION
L
To ensure electrical safety:
‣
Do not disconnect the protective connection (6).
‣
Disconnect the supply voltage before disconnecting the protective earth (7).
Connect protective earth to the internal ground terminal (7) before connecting the
supply voltage. If necessary, connect the potential matching line to the external
ground terminal (11).
In order to ensure electromagnetic compatibility (EMC): Do not only ground the device
via the protective earth conductor of the supply cable. Instead, the functional
grounding must also be connected to the process connection (flange or threaded
connection) or to the external ground terminal.
An easily accessible power switch must be installed in the proximity of the device. The
power switch must be marked as a disconnector for the device (IEC/EN61010).
)
AC
A
9
+
-
4...20 mA
4 5
AC
Electrical connection
)
8
7
6
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