Introduction 3
1.3 Specifications
Digital input
Relay Output
Input channels
8 for PCI-7250 and PCI-7251
16 for cPCI-7252
Photo-coupler PC-814
Input current
10mA rated
60mA max for isolated input
Input Voltage
Up-to 24VDC or 24V AC 50-1,000Hz
Logic Low: 0-2.4V
Logic High 3-24V
Threshold Voltage 2.4VDC
Input impedance
1.2K
Ω
Input mode Isolation AC-filter/ Non-AC-filter
Isolated voltage 5,000 Vrms channel-to-system
Table 1-1: Digital Input Specifications
Output channels 8
Relay type
4 SPDT (Form C)
4 SPST (Form A)
Contact rating
120VAC/DC, 0.5A
24VDC, 1A
Breakdown voltage 1000V AC/DC min..
Release time 8msec typical
Operate time 8msec typical
Contact resistance Bifurcated
Insulation resistance
100MΩ min.
Life expectancy > 10 million operations at full load
LED indicators Monitor ON/OFF status of each relay
Coil Voltage +5V, 33mA for each relay, total 0.264A
Power supply of Relay +5V from the PCI-Bus
Table 1-2: Relay Output Specifications
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