
26 PCI-1720 User's Manual
3. Floating load with an internal +12 V power supply.
These are shown in the following illustrations.
Figure 5-4: Grounded-load connection with a floating power supply
Figure 5-5: Floating-load connection with a grounded power
supply
Figure 5-6: Floating-load connection with an internal +12 V
DC
power supply
+ -
I
SINK
AGND
Internal Side
External Side
0 ~ 20 mA
or
4 ~ 20 mA
Grounded
Load
+-
Internal Side External Side
I
SINK
AGND
0 ~ 20 mA
or
4 ~ 20 mA
Floating
Load
Internal Side External Side
+12 V
DC
I
SINK
AGND
0 ~ 20 mA
or
4 ~ 20 mA
Floating
Load
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