4 Installation
4.2 Electrical Connection
Manual
SIPART DR21
C73000-B7476-C143-08
141
+
+U
H
AI+
AI--
GND
--
6DR2800-8J
1
2
3
4
U
--
+
Figure 4-33 Double-pin wiring of a voltage source with negative polarity to ground
6DR2800-8J
3
+
--
GND
2
4
Controller 1
AI+
AI--
L+
~
~
Controller 2
1
49.9 Ω
6DR2800-8J
3
+
--
2
4
1
GND
+
--
AI--
U
49.9 Ω
AI+
Figure 4-34 Parallel wiring of a non-floating voltage source to two instruments.
The voltage source is supplied by L+ of one of the instruments and negative is referred to
ground.
Figure 4-33 and figure 4-34:
The voltage dip on the ground-rail between the voltage source and the input amplifier appears
as a common mode voltage and is suppressed.
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