Power Supply Connection; Connecting External Sensors - Endress+Hauser RMA 422 Mise En Service

3.2 Power supply connection

- Before installing the unit please check that the power supply
corresponds with that shown on the unit legend plate..
- When operating with the version 90...250 V
isolator must be situated within easy reach of the unit, this
should also be fused with ≤ 10 A.

3.3 Connecting external sensors

3.3.1.Active current source 0/4...20 mA (e.g. transmitters with
their own power supply)
-
+
101 102 103
Analogue input 1
3.3.2 Loop powered 2 wire transmitter using the internal loop
power supply.
Y
I
-
+
101 102 103
Analogue input 1
®
The HART programming unit for setting up sensors can be
directly connected to the unit using the front mounted
communication sockets without the need for any further wiring.
a power
AC
terminals L/L+ and N/L- are
internally linked and can be used as
support for serial loop connection.
-
+
201 202 203
Analogue input 2
Y
I
-
+
201 202 203
Analogue input 2
Process transmitter
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