National Instruments NI CVS-1450 Series User Manual

© National Instruments Corporation

Figure 3-4 shows the power connector on the CVS-1450 device. Table 3-2 
lists and describes each terminal on the power connector.

Figure 3-4.  Power Connector

Some system setups may require using the grounding lug on the CVS-1450 
device to connect the chassis to earth ground. Connecting the grounding 
lug, shown in Figure 3-5, to earth ground connects the common-mode 
signal of the main power to earth ground through the CVS-1450 device 
chassis.

An earth ground connection does not connect Ciso to earth ground.

Table 3-2.  Power Connector Terminals

V

Main power (24 VDC ±10%)

C

Common-mode signal

Viso

Isolated power (5 to 30 VDC)

Ciso

Isolated common-mode signal

V

iso

(5-30 VDC)

C

C

iso

POWER

V

(24 VDC ±10%)

V

iso

(5-30 VDC)

C

V 

(24 VDC ±10%)

C

iso

POWER