Endress+Hauser Micropilot FMR20 HART - Power Supply Failure; Connecting the Device

Micropilot FMR20 HART
10 Endress+Hauser
Power supply failure
The configuration remains stored in the sensor.
Connecting the device 4 to 20 mA HART block diagram
Connection of the device with HART communication, power source and 4 to 20 mA display
2
3
Y
+ +
- -
I
1
mA
A0028908
 4 Block diagram of HART connection
1 Device with HART communication
2 HART resistor
3 Power supply
The HART communication resistor of 250 Ω in the signal line is always necessary in the case of
a low-impedance power supply.
The voltage drop to be taken into account is:
Max. 6 V for 250 Ω communication resistor