ABB ECA06 - Page 41

Chapter 2: Installation 2.4 Electrical Installation
493-0736-11 (6-2) 41
Figure 25 Example of Single Controller Current Loop.
Sensor 4–20 mA
5V
5V
5V
5V
28 V
CMV referenced
to this point
20 mA
48V DC
+
–
AI
250 Ω
250 Ω
250 Ω
250 Ω
+
–
+
–
+
–
+
–
+
–
Supply Unit
Meter
Controller
Indicator 1
Indicator 2
1
6
2
3
4
5