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July 2025
PXI-2566
PXI-2566, 16-Channel, 2 ms Typical Relay Operate Time, SPDT Relay Module
Actual item may vary if no part number is provided on quote request.
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Expert Insights for the PXI-2566
"The PXI-2566 is a great general purpose SPDT relay switching module. Each relay is non-latching and has low resistance and thermal offsets. This device is excellent for controlling, routing, and switching high current signals."
- Chris B.
LabVIEW Trained
In-House Technician
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
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
Expert Insights for the PXI-2566
"The PXI-2566 is a great general purpose SPDT relay switching module. Each relay is non-latching and has low resistance and thermal offsets. This device is excellent for controlling, routing, and switching high current signals."
- Chris B.
LabVIEW Trained
In-House Technician
National Instruments PXI-2566 Relay Module
The National Instruments NI PXI-2566 (Part Numbers: 778572-66, 778573-66) is a 2 A, 16-channel, SPDT-based PXI relay module designed for general-purpose applications. This module features SPDT Form C armature relays. The relays utilized in this module are non-latching with low thermal offsets and extremely low on-resistance. The NI PXI-2566 is considered an ideal module for the controlling, routing, and switching of high-current signals. Each relay channel comes with a normally open (NO), normally closed (NC), and common (COM) terminal. The device has a switch bandwidth of 70 MHz. Part number 778573-66 is the 60V version of the PXI-2566.
With this module, the user can achieve either 16-SPDT (non-latching) or 8-DPDT topology. As far as its input characteristics are concerned, the National Instruments PXI-2566 offers 150 V DC and 125 V AC maximum switching voltage (channel-to-channel) and 150 V DC, 125 V AC, and CAT I1 maximum switching voltage (channel-to-ground). Since it is a Measurement Category I rated module, the PXI-2566 is designed to carry signal voltages no higher than 150 V. However, it has an integrated protection mechanism and can withstand safely up to 800 V impulse voltage.
This PXI Relay Module offers 60 W and 62.5 VA (DC to 60 Hz) maximum switching power and 2 A DC and 2 A AC maximum switching current and allows the parallel operation of 16 channels while operating at maximum switching current. The relays used in the NI PXI-2566 module have a 2 ms (typical) and 4.4 ms (maximum) relay operate time and an 115 cycles/s maximum cycle speed. By design, this model is a 3U, one-slot, PXI module that weighs around 250 g (9 oz) and measures 8.5 x 0.8 x 5.1 in. in physical dimensions. It has a male, 62-pin D-SUB I/O connector and consumes 4.5 watts of power at 5 V and 2.5 W at 3.3 V.
The PXI-2566 has an operating temperature range of 0 °C to 55 °C, a storage temperature range of -20 °C to 70 °C, a non-condensing humidity range of 5% to 85%, and operating and non-operating random vibrations of 0.3 grms and 2.4 grms, respectively—all at a frequency range of 5 Hz to 500 Hz.
| Model | PXI-2566 |
|---|---|
| Manufacturer | National Instruments |
| Part Numbers: | 778572-66, 778573-66 |
| Type | PXI Relay Module |
| Relays | 16 |
| Bus Connector | PXI Hybrid |
| Switch Bandwidth | 70 MHz |
| Scan Rate | 115 Cycles/s |
| I/O Connector | Male 62-Pin D-SUB Connector |
| Topology | 8-DPDT or 16-SPDT (Nonlatching) |
| DC Switching Current | 2 A Maximum |
| Relay Configuration | SPDT |
| PXI Power Requirement | 2.5 W at 3.3 V and 4.5 W at 5 V |
| Operating Temp Range | 0 °C to 55 °C |
| Storage Temp Range | -20 °C to 70 °C |
| Dimensions | 8.5 x 0.8 x 5.1 in. |
| Weight | 9 oz. |
| PXI-2566 Manual | User Manual and Maintenance Manual Available for Download |
| Price | Request a Quote |
Associated part numbers for PXI-2566:
National Instruments PXI-2566 Frequently Asked Questions
Question: What is the nominal voltage for the front panel on the PXI-2566?
Answer: The PXI Relay Module has a front panel nominal voltage of 3.3 V TTL and 8 mA.
Question: What type of relay configuration does the PXI-2566 module have?
Answer: The module has an SPDT relay configuration.
Question: What is the maximum carry current for each channel?
Answer: Each channel of the PXI-2566 has a maximum carry current of 5 A (DC) and 5 A (AC).
Question: Can the relays in the PXI-2566 be replaced in the field?
Answer: Yes, the relays for the PXI Relay Module are field-replaceable.
PXI-2566 PDF Manuals
NI-PXI-2566-SPECIFICATIONS.PDF
PXI-2566-LETTER-OF-VOLATILITY.PDF
PXI-2566 Diagrams
Driver Downloads for PXI-2566
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