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PCIE-1756H User Manual
Chapter 3
S
ignal Connections
3.3.3
Isolated Digital Output
Each isolated output channel comes equipped with a MOSFET, polyswitch (for cur-
rent protection) and flywheel diode for using with inductive loads which can be acti-
vated by connecting PCOM to V
DC
. If an external voltage (5 ~ 40 V
DC
) is applied to
an isolated output channel, the 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 3.4 Isolated Digital Output Connection
3.3.4
Channel-Freeze Function
The PCIE-1756H provides a digital input channel (CH_FRZ_IN) to enable the chan-
nel-freeze function. The channel-freeze function acts when the pin CH_FRZ_IN is
activated. Moreover, you can set up 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 3.5 and 3.6.
Figure 3.5 Wiring in wet contact input mode
Summary of Contents for PCIE-1756H
Page 1: ...User Manual PCIE 1756H 64 ch Isolated Digital I O with Digital Filter PCI Express Card ...
Page 14: ...PCIE 1756H User Manual 8 ...
Page 18: ...PCIE 1756H User Manual 12 ...
Page 27: ...Appendix A A Specifications ...
Page 30: ...PCIE 1756H User Manual 24 ...
Page 31: ...Appendix B B Block Diagram ...
Page 32: ...PCIE 1756H User Manual 26 B 1 Block Diagram ...
