Chapter 2
Setup and Configuration
©
National Instruments Corporation
2-11
NI CVS-1450 Series User Manual
Figure 2-4.
Wiring a Third-Party Power Supply to the 4-Position Power Connector
Caution
Do
not
connect the CVS-1450 device main power to a source other than
24 VDC ±10%. Do
not
connect the CVS-1450 device isolated power to a source less than
5 VDC or greater than 30 VDC. Doing so could damage the CVS-1450 device.
The CVS-1450 device ships with a 4-position power connector that plugs
directly into the power input connector on the CVS-1450 device. To wire
power to the 4-position connector, complete the following steps:
1.
Wire the voltage output of the 24 VDC ±10% power supply to the main
voltage input, labeled
V
, on the 4-position connector.
2.
Wire the common-mode signal (ground) output of the power supply
to the common-mode signal input, labeled
C
, on the 4-position
connector.
If you are using a separate power supply for the CVS-1450 device isolated
outputs, connect the voltage output on the power supply to the isolated
power (
Viso
) on the 4-position connector. Connect the common-mode
signal (ground) on the power supply to the isolated common-mode signal
(
Ciso
) on the connector.
Note
If you do not require a separate power supply for the CVS-1450 device isolated
outputs, you can daisy-chain the
V
to the
Viso
and the
C
to the
Ciso
on the connector.
For information about grounding the CVS-1450 device chassis to earth
ground, refer to the
1
4-Position Power Connector
2
Ferrule
3
Power Supply Wires
1
2
3
