Endress+Hauser RIA15 - Page 28

Wiring RIA15
28 Endress+Hauser
6.4.2 Connection diagram for multiple process display units
LED
- +
-
+
I
Y
1
+
-
O-
L
N
PE
O+
7
6
5
+
-
O-
L
N
PE
O+
9
8
10
4
2
3
LED
- +
-
+
I
Y
LED
- +
-
+
I
Y
+
-
O-
L
N
PE
O+
+
-
O-
L
N
PE
O+
11
A0028249
1 Process display unit RIA15
2 3-wire connector, e.g. WAGO 221 series
3 2-wire sensor
4 Terminal block on top-hat rail
5 Active barrier, e.g. RN221N
6 4 to 20 mA output to the control unit
7 Power supply
8 Current source, e.g. RN221N
9 Switch to activate backlighting
10 Power supply
11 Can be extended to 7 devices