ADLINK PCI-9524 - Manual (Page 59)

Signal Connections 43
ADLINK Technology Inc. PCI-9524
Copyright 2008 User’s Manual
3.3.4 Interfacing Isolated DO with External Loads
Connecting to external resistive loads
Figure 3-15 presents connecting to external resistive loads. The
left side illustrates driving an external LED using the internal
ISOPWR source; the right side illustrates driving an external 5W,
24-VDC Bulb using an external power supply.
Figure 3-15: Connecting to an external resistive load
from the isolated DO sink driver
ISOPWR
EXT_ISOPWR
IDOn
ISOGND
PCI-9524
5 VDC
33
0
O
LED
ISOPWR
EXT_ISOPWR
IDOn
ISOGND
PCI-9524
5 VDC
24 VDC
Bulb
Connecting to external inductive loads
Figure 3-16 presents connecting to external resistive loads. The
left side illustrates driving a 5-VDC relay coil using the internal
ISOPWR source; the right side illustrates driving an external 12-
VDC relay coil using an external power supply.