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July 2025
PCI-6521
PCI-6521, 16-Channel, 8 Sink/Source Inputs, 8 Relay Outputs, Isolated Digital I/O Device
Actual item may vary if no part number is provided on quote request.
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" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
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May 2025
Gregg Flecki**** Verified Buyer
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January 2025
Carol Zimme**** Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
National Instruments PCI-6521 Digital I/O Device
The PCI-6521 (Part Number: 779312-01) is an Industrial Digital I/O Device that comes with a great channel count and logic levels of 24 V. This instrument can use computerized I/O watchdogs if a mistake happens. In this manner, the watchdogs will change to a customizable safe output state and this will guarantee the model a safe recuperation from discovery and mistake conditions. It additionally includes programmable catalyst states, computerized separating, and change discovery for ideal control over the user’s application. Specialists can utilize NI PCI-6521 relays to change up to 150 Vac/Vcc with a greatest exchanging intensity of 60 W and control high-voltage gadgets straightforwardly from the card. Likewise, specialists can exploit the exceptionally dependable arrangement of mechanical highlights- including watchdog clocks, programmable power states, advanced separating, and change recognition for coordinating a sensor network. This gives solid activity in a Windows working framework, regardless of whether there is a working framework error that requires a product restart.
Not at all like other mechanical transfer embeds available, the NI PCI-6521 is ensured and perceived by UL. Autonomous security confirmation associations, such as UL assess items in view of set up models that guarantee that the utilization of the item is protected. The NI PCI 6521 Digital I/O Device offers a keyed connector to keep the client from coincidentally associating a high voltage link to a low voltage gadget. Furthermore, the PCI-6521 offers protection covers on the two sides of the card, which keeps engineers at a sheltered separation from electrical cables.
| Model | PCI-6521 |
|---|---|
| Manufacturer | National Instruments |
| Part Number | 779312-01 |
| Type | Digital I/O Module |
| Input Lines | 8 Source/Sink |
| Output Lines | 8 Electromechanical Relays |
| Maximum Input Voltage | ±30 VDC |
| Maximum Input Current | 12.5 mA/line |
| Propagation Delay | 45 μs |
| I/O Connector | 37-pin keyed male D-SUB |
| Power Requirements | +5 VDC - 600 mA |
| Dimensions | 6.9 in. × 3.9 in. |
| Weight | 0.37 lb. |
| Driver Software | NI-DAQ 7.5, NI-DAQmx |
| PCI-6521 Manual | User Manual and Maintenance Manual Available for Download |
| Price | Contact a sales representative for a quote. |
Associated part numbers for PCI-6521:
National Instruments PCI-6521 Frequently Asked Questions
Question: Can I use my NI PCI-6521 to output 120 V AC to control a solenoid valve?
Answer: No, the NI PCI-6521 only supports outputting a DC voltage. A solid state relay is recommended to convert DC to AC.
Question: Which driver software should be used with the NI PCI 6521?
Answer: NI-DAQmx driver software Version 7.5 or later should be used with the NI PCI 6521.
Question: Which safety certifications apply to the PCI-6521?
Answer: The PCI-6521 is UL listed: UL 61010-1 (IEC 61010-1).
Question: What is the maximum power of the PCI 6521?
Answer: The maximum power of the PCI 6521 is 60 W.
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