Electrical Connection; Terminal Layout - Endress+Hauser RMA 422 Mise En Service

Process transmitter

3. Electrical connection

3.1 Terminal layout

Terminal layout
L/L+ L for AC
N/L- N for AC
- Signal ground transmitter 1
101
+ Current signal 0/4...20 mA
102 - Current signal 0/4...20 mA
103 + Power supply transmitter 1
- Signal ground transmitter 2
201
+ Current signal 0/4...20 mA
202 - Current signal 0/4...20 mA
203 + Power supply transmitter 2
41 Normally closed
Common
42
(same connection as relay 1)
43 Normally open
51 Normally closed
Common
52
(same connection as relay 2)
53 Normally open
131 Output +
132 Output -
231 Output +
232 Output -
®
1 HART
®
HART
®
2 HART
®
HART
Connections for setting up and measured value
RS 232
readout (PC - setting up software)
42
Connection HART
Connection HART
(banana plug 2 mm)
Connection RS 232
(stereo plug 3,5 mm)
L+ for DC
L- for DC
current, voltage
current, voltage
current, voltage
current, voltage
- communication to
SMART-transmitter 1
- communication to
SMART-transmitter 2
®
1
®
2
43 42 41
L/L+ N/L-
In- and output
Power supply
Analogue input 1
Analogue input 2
(optional)
Relay output 1
(optional)
Relay output 2
(optional)
Analogue output 1
(optional)
Analogue output 2
(optional)
Communication
sockets
Communication
sockets (optional)
Serial interface
53 52 51