Siemens SIPART DR21

4 Installation
4.2 Electrical Connection
Manual
136
SIPART DR21
C73000-B7476-C143-08
- Pin assignment for thermocouple TC S8 = 1, 2
i
m
U
+REF
+
--
A
D
Sensor
6DR2800-8V
4
3
2
1
R
L4
R
L1
+R
L4
≤300 Ω
T
R
L1
Internal
reference point
6DR2805-8A
Internal
reference point
+
--
R
L4
R
L1
+
--
T
b
External
reference point
Block diagram mV-module 6DR2800-8V
Figure 4-21 Connection UNI-module AI3 S8 = 1, 2
- Pin assignment for Pt100-sensor RTD S8 = 3, 4, 5
R
L
per ≤100 Ω
R
L4
Pt100
4-conductor
R
L1
2-conductor
R
L4
Pt100
R
L1
R
L2
3-conductor
R
L4
Pt100
R
L1
R
L2
R
L3
R
L1
=R
L2
=R
L4
≤50 Ω R
L1
+R
L4
≤50 Ω
Block diagram mV-module 6DR2800-8V
i
m
U
+REF
+
--
A
D
Sensor
6DR2800-8V
4
3
2
1
Figure 4-22 Connection UNI-module AI3 S8 = 3, 4, 5