Endress+Hauser Levelflex FMP56 HART Brief Operating Instructions page 28

Electrical connection
2-wire: 4-20mA HART, switch output
10
9
8
+
–
250
³
1 2 3
+
–
250
³
1 2 3
 7 Terminal assignment 2-wire; 4-20mA HART, switch output
A Without integrated overvoltage protection
B With integrated overvoltage protection
1 Active barrier with power supply (e.g. RN221N): Observe terminal voltage
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 Cable screen; observe cable specification
6 4-20mA HART (passive): Terminals 1 and 2
7 Switch output (open collector): Terminals 3 and 4
8 Terminal for potential equalization line
28
3+
4-
+
4...20 mA
W
4 5
3+
4-
+
4...20 mA
W
4 5
A
7
-
B
11
-
Levelflex FMP56, FMP57 HART
6
Endress+Hauser
A0013759