Endress+Hauser Micropilot FMR51 Technical Information page 21

Micropilot FMR51, FMR52
Endress+Hauser
2-wire: 4-20mA HART, switch output
10
9
8
+
–
≥250 Ω
4...20 mA
1 2 3 4
+
–
≥250 Ω
4...20 mA
1 2 3 4
 3 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
9 Cable entry for 4-20mA HART line
10 Cable entry for switch output line
11 Overvoltage protection module
A
3+
7
4-
+
-
5
B
3+
11
4-
+
-
5
6
A0013759
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