11-26
ET 200L, ET 200L-SC and ET 200L-SC IM-SC Distributed I/O Device
EWA 4NEB 780 6009-02c
11.17 Connecting Loads/Actuators to Analog Outputs
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
L
:
Load resistance
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 C
Slot B
C1
C2
C3
C4
B1
B2
B3
B4
A1
A2
A3
A4
1L+
2L+
1M
2M
+24V
M
QI+
QI–
R
L
Slot A
AO 4...20 mA/
0...20mA
Figure 11-9 Connecting Loads/Actuators to a Current Output (Example TB 16SC)
Connecting Loads
to a Current
Output
SC Analog Electronic Modules – Parameters