Endress+Hauser Levelflex FMP51 Technical Information page 26

26
4-wire: 4-20mA HART (90 to 253 V
13
12
11
10
250
³ W
1 2 3
 8 Terminal assignment 4-wire; 4-20mA HART (90 to 253 VAC)
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
Levelflex FMP51, FMP52, FMP54
6
Endress+Hauser
8
7
A0018965