Figure 3.8 Isolated Digital Input Connection - Advantech PCI-1730 User Manual

PCI-1733 Pin Assignments
Description of pin use:
IDI n ( n =0 ~ 31):
Isolated digital input
ECOM n ( n =0 ~ 3):
External common Vcc/GND of IDI
EGND:
External ground for IDI
Isolated Digital Input
Each of the 32 isolated digital input channels accept voltages from 5
to 30 V. Every eight input channels share one external common. (Channels 0 ~ 7 use
ECOM0. Channels 8 ~ 15 use ECOM1. Channels 16 ~ 23 use ECOM2. Channels 24
~ 31 use ECOM3.) The following figure shows how to connect an external input
source to the card's isolated inputs.
PCI-1730/1733/1734 User Manual
IDI 0
IDI 2
IDI 4
IDI 6
ECOM 5
IDI 9
IDI 11 7
IDI 13 8
IDI 15 9
IDI 16 10
IDI 18 11
IDI 20 12
IDI 22 13
ECOM 14
IDI25
IDI27
IDI29
IDI31
EGND 19
External
Wet
contact
Dry
Contact

Figure 3.8 Isolated Digital Input Connection

26
CN1
1 20 IDI 1
2 21 IDI 3
3 22 IDI 5
4 23 IDI 7
24 IDI 8
6 25 IDI 10
26 IDI 12
27 IDI 14
28 ECOM
29 IDI17
30 IDI19
31 IDI21
32 IDI23
33 IDI24
15 34 IDI26
16 35 IDI28
17 36 IDI30
18 37 ECOM
.
Internal
IDI0
ECOM
Isolated
Circuit
IDI1
EGND