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SC Analog Electronic Modules – Parameters
11.17 Connecting Loads/Actuators to Analog Outputs
Connecting Loads
to a Current
Output
1L+
1M
+24V
M
Figure 11-9 Connecting Loads/Actuators to a Current Output (Example TB 16SC)
11-26
In the figures below, the abbreviations have the following meanings:
QI+:
Output current
QV+:
Output voltage
S +:
Sensor line (positive)
S –:
Sensor line (negative)
QV–/QI–:
Return line for load (ground connection)
R
:
Load resistance
L
The figures below show you how to connect loads and actuators to the cur-
rent or voltage outputs of the analog output modules.
Figure 11-9 shows an example of the wiring on an electronic module.
Slot A
AO 4...20 mA/
0...20mA
2L+
A1
A2
QI+
2M
A3
A4
QI–
R
L
ET 200L, ET 200L-SC and ET 200L-SC IM-SC Distributed I/O Device
Slot B
Slot C
B1
B2
C1
B3
B4
C3
EWA 4NEB 780 6009-02c
C2
C4
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