Endress+Hauser Micropilot FMR53 - Page 36

Electrical connection Micropilot FMR53, FMR54 HART
36 Endress+Hauser
Block diagram 2-wire: 4-20 mA HART, switch output
5
4
1
2
3
+
+
+
-
-
-
Y
I
6
7
1
2
3
4
A0036501
 12 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)