- Supports a 32-Bit 5 V PCI bus (PCI-7250/7251)
- 4-CH SPDT & 4-CH SPST relays (PCI-7250)
- 8-CH SPDT & 8-CH SPST relays (PCI-7250 + 1 x PCI-7251)
- 12-CH SPDT & 12-CH SPST relays (PCI-7250 + 2 x PCI-7251)
- 16-CH SPDT & 16-CH SPST relays (PCI-7250 + 3 x PCI-7251)
- Non-latching relays
- Onboard LED indicators for relay status
- Onboard relay driving circuits
- Relay output status read back
- 8-CH isolated digital inputs (cPCI-7252/PCI-7250/LPCI-7250/LPCIe-7250)
- 16-CH isolated digital inputs (PCI-7250 + 1 x PCI-7251)
- 24-CH isolated digital inputs (PCI-7250 + 2 x PCI-7251)
- 32-CH isolated digital inputs (PCI-7250 + 3 x PCI-7251)
- Onboard low-pass filtering for digital inputs
- Compact, low-profile size PCB (LPCI-7250/LPCIe-7250)
Specifications
Relay Output
Number of channels: 8
Relay types
PCI-7250/7251:
- Channel 0-3: SPDT (normal open)
- Channel 4-7: SPST (normal open)
Contact rating (PCI-7250/7251 & cPCI-7252)
- AC: 120 V @ 0.5 A
- DC: 24 V @ 1 A
Breakdown voltage: 1000 VRMS
Contact resistance: 100 m
Relay ON/OFF time
- Operate time: 8 ms
- Release time: 8 ms
LED indicators: onboard LEDs for relay status
Expected life
PCI-7250/7251 & cPCI-7252
- >5×105 operations @ 1 A, 24 VDC
- >2×105 operations @ 0.5 A, 120 VAC
Data transfers: programmed I/O
Isolated Digital Input
Number of channels: 8
Maximum input range: 24 V, non-polarity
Digital logic levels
- 0-24 V, non-polarity
- Input high voltage: 5-24 V (PCI/LPCI/LPCIe-7250, PCI-7251)
- Input low voltage: 0-1.5 V (PCI/LPCI/LPCIe-7250, PCI-7251)
Input resistance: 2.2 kΩ @ 0.33 W (PCI/LPCI/LPCIe7250, PCI-7251) 1.2 kΩ @ 0.5 W (cPCI-7252)
Isolation voltage: 5000 VRMS
Data transfers: programmed I/O
General Specifications
I/O connector: PCI-7250/7251: 37-pin D-sub female
Operating temperature: 0˚C to 60˚C (32˚F to 140˚F)
Storage temperature: -20˚C to 80˚C (-4˚F to 176˚F)
Relative humidity: 5% to 95%, non-condensing
Power requirements
| Device | Power Consumption |
| PCI-7250 | +5 V @ 140 mA typical |
| PCI-7251 | +5 V @ 125 mA typica |
Dimensions (not including connectors)
- 162 mm x 107 mm (6.31” x 4.17″) (PCI-7250)
- 141 mm x 102 mm (5.49″ x 3.97″) (PCI-7251)
