Advantech PCI-1752, Быстрый старт

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Chapter 3
– 28 – PCI-1752/54/56 User’s Manual
Advantech Co., Ltd.
www.advantech.com
3.4 Isolated Digital Output Connections
The PCI-1752 has 64 isolated digital output channels designated
IDO00~IDO63, and PCI-1756 has 32 isolated digital output channels
designated IDO00~IDO31.
Power On Configuration
Default configuration after power on, and hardware reset is to set all
the isolated output channels to open status ( the current of the load
can’t be sink) so that users need not worry about damaging external
devices during system startup or reset.
When the system is hot reset, then the status of isolated digital output
channels are selected by jumper JP1. Table 3-4 shows the configura-
tion of jumper JP1.
Table 3-4 JP1: Power on configuration after hot reset
Isolated Outputs
Each of isolated output channels comes equipped with a Darlington
transistor. Every 16 output channels share common collectors and
integral suppression diodes for inductive loads.
Note:
✎
If an external voltage (5 ~ 40 V
DC
) is applied to an isolated output
channel while it is being used as an output channel, the current will
flow from the external voltage source to the card. Please take care that
the current through each IDO pin not exceed 200 mA.
Figure 3-8 shows how to connect an external output load to the card’s
isolated outputs.
PCI-1752 JP1 PCI-1756 JP1 Power on configuration after hot reset
Keep last status after hot reset
Default configuration
1
1
1
1