Wiring
Loop-powered display unit
16
Connection without backlighting
Connection with backlighting
Connection with PLC and
transmitter
-
-
+
+
I
Y
1
LED
-
+
A0019720
1 PLC
-
-
+
+
I
Y
1
LED
-
+
A0019721
1 PLC
Connection without transmitter
power supply directly in the
4 to 20 mA circuit
+
2
-
I
Y
LED
-
+
A0017708
2 4 to 20 mA power source
+
2
-
I
Y
LED
-
+
A0017709
2 4 to 20 mA power source
5.3
Connection in HART mode
The following diagrams show how the process display unit is connected in HART mode.
5.3.1
HART
®
connection
NOTICE
Undefined behavior due to incorrect wiring of an actuator
‣
When installing the process display unit together with an actuator, the Operating
Instructions for the actuator must be followed!
