Electrical Connection; Terminal Layout And Power Supply - Endress+Hauser RIA 450 Manual De Instrucciones

Process display

3. Electrical connection

3.1 Terminal layout and power supply

Before installing the unit
please check that the
power supply corresponds
with that shown on the
unit legend plate.
Always connect the earth
protection cable before
attempting to connect any
other cables.
When operating with a 90
.. 250 V AC unit a power
isolator must be situated
within easy reach of the
unit. This should also be
fused with ≤ 10 A.
L/L+
N/L-
S
11
13
13
14
15
41
42
43
44
45
46
51
52
53
54
55
56
81
82
36
Terminal layout
L for AC L+ for DC
N for AC L- for DC
PE connection
Screen
50 Ohm shunt to ground
Measurement signal +
Measurement signal +
Measurement signal -
Pt 100 Constant current (+)
Normally closed
Common
Normally open
Normally closed
Common
Normally open
Normally closed
Common
Normally open
Normally closed
Common
Normally open
+ 24 V loop power
0 V loop power
In and outputs
Power supply
Internal meas. resistor
Measurement input
Measurement input
Relay output 1
Relay output 2
Relay output 3
Relay output 4
Loop power supply