Connecting Current Sensors; Connecting 4-Wire Measuring Transducers (Example Tb 16Sc) - Siemens Metro 21 M216KA Operator's Manual

11.8 Connecting Current Sensors

Supply Voltage of
the Sensors
Connecting 4-Wire
Measuring
Transducers
1L+
1M
+24V
M
U
H
4-wire
measuring
transducer
P
P 4-wire
measuring
transducer
Sensor, e.g.
pressure
U
H
gauge
Figure 11-5 Connecting 4-Wire Measuring Transducers (Example TB 16SC)
ET 200L, ET 200L-SC and ET 200L-SC IM-SC Distributed I/O Device
EWA 4NEB 780 6009-02c
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.
Slot A
AI 4...20 mA/
20mA
2L+ A1 A2
M+ M+
2M A3 A4
M– M–
+
–
+
–
SC Analog Electronic Modules – Parameters
Slot B Slot C
B1 B2 C1
B3 B4 C3
U
C2
C4
= auxiliary power
H
11-15