Isolated Digital Output; Figure 3.3:Isolated Digital Output Connection; Channel-Freeze Function; Figure 3.4:Wiring In Wet Contact Input Mode - Advantech PCIE-1752 User Manual

3.3.2 Isolated Digital Output

Each of isolated output channels comes equipped with a MOSFET, poly-
switch (for current protection) and flywheel diode for using with induc-
tive loads which can be activated by connecting PCOM to V
external voltage (5 ~ 40 V
current will flow from the external voltage source to the card. Please note
that the current through each IDO channel should not exceed 500 mA.
Figure 3.3: Isolated Digital Output Connection

3.3.3 Channel-Freeze Function

The PCIE-1752 provides a digital input channel (CH_FRZ_IN) to enable
the channel-freeze function. The channel-freeze function acts when the
pin CH_FRZ_IN is activated. Moreover, you can setup the input mode of
channel-freeze function input channel CH_FRZ_IN as dry contact input
mode or wet contact input mode selected by on-board jumper JP2. The
wiring in wet contact and dry contact input mode are shown in Figures
3.4 and 3.5.
Figure 3.4: Wiring in wet contact input mode
) is applied to an isolated output channel, the
DC
23
. If an
DC
Chapter 3