Figure 2. Chassis Grounding Screw
SYSTEM
12-2
4
V
C
V
ISO
5-24 V
1
C
ISO
V
ISO
1. Chassis Grounding Screw
Power Input Connectors
The IC-3121 requires a power supply to power the system. If needed for your application, an
additional power source is required to power the isolated outputs.
The same power supply may be used for both the system power and isolated outputs power if
isolation is not required and the power supply meets the voltage and power requirements for
both inputs. Refer to the
IC-3121 Specifications
for power requirements.
NI recommends the following power supply for the IC-3121.
Power Supply
Part Number
NI PS-15 Industrial Power Supply, to power the system or isolated outputs
781093-01
IC-3121 User Manual
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© National Instruments
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