11-15
ET 200L, ET 200L-SC and ET 200L-SC IM-SC Distributed I/O Device
EWA 4NEB 780 6009-02c
11.8
Connecting Current Sensors
You can only connect 4-wire measuring transducers or 2-wire measuring
transducers with external supply voltage to the modules.
Figure 11-5 shows you how to connect current sensors as 4-wire measuring
transducers to analog input modules.
U
H
= auxiliary power
Slot A
AI 4...20 mA/
"
20mA
Slot C
Slot B
C1
C2
C3
C4
B1
B2
B3
B4
A1
A2
A3
A4
1L+
2L+
1M
2M
+24V
M
M+
M–
M+
M–
Sensor, e.g.
pressure
gauge
+
–
4-wire
measuring
transducer
4-wire
measuring
transducer
+
–
U
H
U
H
P
P
Figure 11-5 Connecting 4-Wire Measuring Transducers (Example TB 16SC)
Supply Voltage of
the Sensors
Connecting 4-Wire
Measuring
Transducers
SC Analog Electronic Modules – Parameters