National Instruments cFP-PWM-520 用户手册

The FP-TB-x terminal base has connections for each of the eight 
output channels and for an external power supply to power the 
output channels and field devices. The cFP-CB-x connector block 
provides the same connections. Each channel has one output 
terminal (V

OUT

), one supply terminal (V

SUP

), and two common 

terminals (COM). All eight channels are referenced to the COM 
terminals. The V and V

SUP

 terminals are all internally connected, 

as are the C and COM terminals.

Table 1 lists the terminal assignments for the signals of each 
channel. Terminal assignments are also listed on the side panel 
of the cFP-PWM-520 and under the slide-in card on the front of the 
FP-PWM-520. Connect to the terminals using the terminal base, 
connector block, or other connectivity accessory.

Use a 5 VDC or 10–30 VDC external power supply for the output 
channels. The power supply must provide enough current to power 
all of the loads on the output channels, up to a maximum of 1 A per 
channel. Connect the external power supply to multiple V and V

SUP

 

terminals and to multiple C and COM terminals as needed to 
ensure that the maximum current through any terminal is 2 A 
or less.

Table 1.  Terminal Assignments

0

1

17

2, 18

1

3

19

4, 20

2

5

21

6, 22

3

7

23

8, 24

4

9

25

10, 26

5

11

27

12, 28

6

13

29

14, 30

7

15

31

16, 32

*

 Install a 1 A maximum, fast-acting fuse on each V

OUT

 terminal.

†

 Install a 2 A maximum, fast-acting fuse on each V

SUP

 terminal.