Endress+Hauser Levelflex FMP56 Operating Instructions Manual page 47

Levelflex FMP56, FMP57 HART
Endress+Hauser
Terminal assignment 2-wire: 4-20 mA HART, switch output
A
2
1
 16 Terminal assignment 2-wire: 4-20 mA HART, switch output
A Without integrated overvoltage protection
B With integrated overvoltage protection
1 Connection 4-20 mA HART passive: terminals 1 and 2, without integrated overvoltage protection
2 Connection switch output (Open Collector): terminals 3 and 4, without integrated overvoltage protection
3 Connection switch output (Open Collector): terminals 3 and 4, with integrated overvoltage protection
4 Connection 4-20 mA HART passive: terminals 1 and 2, with integrated overvoltage protection
5 Terminal for cable screen
Block diagram 2-wire: 4-20 mA HART, switch output
3
2
1
 17 Block diagram 2-wire: 4-20 mA HART, switch output
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 Measuring device
7 Switch output (Open Collector)
B
+
-
Electrical connection
4
5
6
+
1
I
-
2
+
Y
3
-
4
7
3
4
5
A0036500
A0036501
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