Siemens SIPART DR21

4 Installation
4.2 Electrical Connection
Manual
SIPART DR21
C73000-B7476-C143-08
131
D Connection of measuring- and signal lines AI1 and AI2
11/12
3
24
1
9
AI2AI1
I
+
U
H
+U
H
4L
2L
-
L+
AI+
AI-
L+
AI+
AI-
+
+
I
AI+
GND
AI+
AI--
GND
-
-
GND
GND
I
I
1)
1)
The series circuiting of several inputs is not possible because AI1/2 is connected internally to GND.
Set 0/4 to 20 mA with S4 to S5
AI--
Figure 4-12 Wiring AI1 to AI2, current inputs
D DI1 to DI2
<4.5 V
>13 V
or
9
5
6
11/12
DI1
DI2
L+
GND
Set function with S23 to S33/S92
Set direction of effect with S34 to S40
Figure 4-13 Connection DI1 to DI2
D AO
≤ 900 Ω
0/4 ... 20 mA
10
11/12
GND
Function: 0/4 to 20 mA
Set with S56
AO
Figure 4-14 Connection AO