Endress+Hauser Micropilot FMR20 - Electrical Connection; Cable Assignment; Supply Voltage

Micropilot FMR20 Modbus RS485 Electrical connection
Endress+Hauser 25
6 Electrical connection
6.1 Cable assignment
1
2
-
+
D0 / A (+)
D1 / B (-)
3
4
A0037750
 18 FMR20 cable assignment, Modbus
1 Plus, brown wire
2 Minus, blue wire
3 Modbus D0/A (+), white wire
4 Modbus D1/B (-), black wire
6.2 Supply voltage
5 to 30 V
DC
An external power supply is necessary.
Battery operation
The sensor's Bluetooth® wireless technology communication can be disabled to increase the
operating life of the battery.
Potential equalization
No special measures for potential equalization are required.
Various power supply units can be ordered as an accessory from Endress+Hauser.