2 •• Introduction
1.1 Features
The PCI-7250 Relay Actuator and D/I Card provides the following
advanced features:
• 32-bit PCI-Bus, Plug and Play for PCI-7250
• 32-bit ComapctPCI
Bus, Plug and Play for cPCI-7252
• 8 relay actuator outputs
• 8 opto-isolated digital inputs for PCI-7250
• 16 opto-isolated digital inputs for cPCI-7252
• LED indicators to show activated relays
• Jumper selectable AC-filter/non-AC-filter input signals
• On-board relay driving circuits
• On-board digital input signal conditioning circuits
Note: The PCI-7251 can attach to the PCI-7250 card. Each PCI-7251 card provides
another 8 relay output and 8 photo isolated input signals. There are at most
three PCI-7251 cards can be attached on one PCI-7250 card so that the
system can provide 32 relay output signals and 32 photo isolated inputs
signals.
1.2 Applications
• Industrial ON/OFF control
• External high power relay driving, Signal switching
• Laboratory automation
• Industrial automation
• Switch contact status sensing, limit switch monitoring,
• Useful with A/D and D/A cards to implement a data acquisition
& control system
1.3 Specifications
♦ Digital input
Input channels 8 for PCI-7250 and PCI-7251
16 for cPCI-7252
Photo-coupler PC-814
Input current 60 mA max. for isolated input
Input Voltage 3 - 24 VDC ( AC 50-1,000Hz)
Input impedance
1.2 KΩ
Threshold Voltage 2.4 VDC
Input mode Isolation AC-filter/ Non-AC-filter
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