When a machine needs to turn on lights, motors, or safety devices, the control system must have a fast and safe way to switch power and read signals. Without a solid I/O card, false triggers or slow response can cause downtime, product loss, or safety hazards. The ADLINK PCI-7250 gives you eight reliable relay outputs and eight isolated digital inputs on a single PCI board, so you can control and monitor equipment with confidence.
ADLINK PCI-7250 8 Channel Relay Outputs and 8 Channel Isolated DI Card with ADLINK
Meet the ADLINK PCI-7250 8 Channel Relay Outputs and 8 Channel Isolated DI Card with ADLINK - the compact bridge between your PC and real-world hardware. This card fits into a standard 32-bit PCI slot and provides eight relay channels plus eight optically isolated inputs. Engineers who need precise on/off control and noise-free sensing choose this card because it removes the guesswork of wiring separate modules.
Benefits
- Fast 8 ms relay on/off time keeps processes running smoothly.
- Eight isolated inputs protect your PC from high-voltage spikes.
- Single PCI card reduces cabinet space and wiring complexity.
- LED indicators show relay status at a glance for easy troubleshooting.
- Expandable up to 32 relays and 32 inputs when stacked with other PCI-7251 cards.
Key Features
- 8 relay channels - four SPDT (Form C) and four SPST (Form A).
- Relay contact rating: 120 V @ 0.5 A AC, 24 V @ 1 A DC.
- Relay breakdown voltage of 1000 VRMS for high safety margin.
- Typical contact resistance of 100 m ensures reliable switching.
- 8 optically isolated digital inputs with 0-24 V non-polarity range.
Specifications
| Card Type |
PCI Digital I/O Card |
| Relay Outputs |
8 channels total |
| Relay Configuration |
Channels 0–3: SPDT (Form C)Channels 4–7: SPST (Form A) |
| Relay Contact Rating |
AC: 120 V @ 0.5 ADC: 24 V @ 1 A |
| Relay Breakdown Voltage |
1000 VRMS |
| Relay Contact Resistance |
100 mΩ typical |
| Relay ON/OFF Time |
Operate: ~8 msRelease: ~8 ms |
| Digital Inputs |
8 isolated digital input channels |
| Input Voltage Range |
0–24 V (non‑polarity) |
| Digital Logic Levels |
Input High: 5–24 VInput Low: 0–1.5 V |
| Input Resistance |
~2.2 kΩ @ 0.33 W |
| Isolation Voltage |
5000 VRMS |
| Isolation |
Optically isolated digital inputs |
| I/O Connector |
37‑pin D‑sub female |
| LED Indicators |
On‑board LEDs for relay status |
| Data Transfer |
Programmed I/O |
| Bus Interface |
32‑bit 5 V PCI bus |
| Operating Temperature |
0°C to 60°C
|
| Storage Temperature |
–20°C to 80°C |
| Relative Humidity |
5% to 95%, non‑condensing |
| Power Consumption |
+5 V @ ~140 mA typical |
| Expansion Capability |
Up to 3 PCI‑7251 cards can expand to 32 relay + 32 DI channels |
