National Instruments cFP-PG-522, FP-PG-522 Pulse Output Circuit

Table1 lists the terminal assignments for the signals of each

channel. Terminal assignments are also listed on the side panel

ofthe cFP-PG-522 and under the slide-in card on the front of the

FP-PG-522.

Pulse Output Circuit

The [c]FP-PG-522 output channels are optically isolated from the

rest of the FieldPoint bank. In the ON state, a transistor is turned

on between the output (VOUT) and common (C and COM). In the

OFF state, this transistor is turned off, allowing only a small

leakage current to flow.

Ensure that the load on any channel does not draw more than 2A.

In addition, the sum of the squares of the channel currents must

notexceed 16 A2. For example, five channels operating at 1.2 A

yields 7.2A2:

(1.2 A)2 × 5 = 7.2 A2

Caution For a cFP-PG-522 operating in the 60–70 °C

temperature range, the sum of the squares of the channel

currents must not exceed 8 A2.

Table 1. Terminal Assignments

Channel

Terminal Numbers

VOUT1VSUP2COM

0 2 1,17 18

1 4 3,19 20

2 6 5,21 22

3 8 7,23 24

410 9,25 26

512 11,27 28

614 13,29 30

716 15,31 32

1 Install a 2 A maximum, fast-acting fuse on each VOUT terminal.

2 Install a 2 A maximum, fast-acting fuse on each VSUP terminal.