Process Display; Power Supply Connection - Endress+Hauser RIA 550 Manual De Utilización

Process display

Terminal layout
L L for AC
N N for AC
Ground connection
81 + 24 V Loop power
82 0 V Loop power
83 + 24 V Loop power
84 0 V Loop power
11 current sensor 50Ω
13 Measured signal Current, voltage, thermo-couple, RTD
14 Signal ground Current, voltage, thermo-couple, RTD
15 Power connection + RTD (2-/3-wire)
21 current sensor 50Ω
23 Measured signal Current, voltage, thermo-couple, RTD
24 Signal ground Current, voltage, thermo-couple, RTD
15 Power connection + RTD (2-/3-wire)
42 Connection relay 1
43 Switch contact
45 Connection relay 2
46 Switch contact
52 Connection relay 3
53 Switch contact
55 Connection relay 4
56 Switch contact
24
L+ for DC
N- for DC

4.2 Power supply connection

Before installing the unit please check that the power
supply used corresponds with that shown on the unit le-
gend plate.
Always connect the ground (earth) cable before connec-
ting any other cables.
When operating with a 90...253 VAC unit a power isola-
tor must be situated within easy reach of the unit. This
should also be fused with at least 10 A.
Connections/examples
In/output
Power supply
Loop power supply 1
Loop power supply 2
Input 1
Input 2
Relay output 1
Relay output 2
Relay output 3
Relay output 4