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NI-9470, C Series, 8 Sourcing Output Channels, 2 kHz, NI Digital Output Module
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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
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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 NI-9470 C Series Digital Output Module
The National Instruments NI-9470 (Part Numbers: 787089-02, 787089-01) is an industrial-grade, multipurpose digital output module with eight output channels that can handle signals ranging from 5V to 30V. Current readback, dither control, pulse width modulation (PWM), and proportional valve drive control are some of its primary characteristics. Every channel possesses a separate PWM engine, PID controller, and SAR ADC.
Transient overvoltage protection and crimp terminal interface make the NI-9470 a dependable and safe device. In measurement applications, it improves safety by offering channel-to-earth ground isolation. For reliable diagnostics, the module provides overcurrent, overtemperature, power supply failure, and power supply voltage readback detection.
There are two output modes available: Average Current mode for closed-loop control utilizing an inbuilt PID controller and Duty Cycle mode for open-loop control. Channels are in a tristate state when they first turn on, and PWM output happens once the software operation starts. Channel closure is the outcome of fault conditions.
The master timebase, which has an internal frequency of 12.8 MHz, regulates the data rate, PWM, and dither frequencies of the module. For multi-module installations, external timebase synchronization is supported. To improve noise rejection, a hardware digital comb filter averages current ADC samples.
For the purpose of measuring current, each channel has low-side sensing resistors. The number of active channels determines the maximum current rating, with a peak current restriction of 3.5A per channel. PWM frequency precision is as high as 2.048 kHz.
PID controller and dither engine of NI-9470 provide fine control over output parameters, with channel-specific settings. By producing a triangular wave with a zero DC average, the dither engine improves output stability.
| Model Name | NI-9470 |
|---|---|
| Part Number(s) | 787089-02, 787089-01 |
| Number of Output Channels | 8 |
| Output Voltage Range | 5V to 30V |
| Overvoltage Protection | Transient overvoltage protection between output channels and backplane |
| Current Sensing | 8 low-side sensing resistors |
| Maximum Current Per Channel | 3.5A (peak) |
| Output Modes | Duty Cycle mode, Average Current mode |
| Safety Features | Overcurrent detection, power supply fault detection, overtemperature detection |
| Data Rate | 3.2 kHz, 3.125 kHz, 2.56 kHz, 2 kHz (12.8 MHz timebase) 3.277 kHz, 3.2 kHz, 2.621 kHz, 2.048 kHz (13.1072 MHz timebase) |
| PWM Frequency | Maximum 2.048 kHz, accuracy 0.01% |
| ADC Sampling Rate | At least 32 times the module data rate |
Associated part numbers for NI-9470:
National Instruments NI-9470 Frequently Asked Questions
Question: Why does the NI-9470 have two part numbers?
Answer: NI-9470 has two separate part numbers because 787089-02 is conformal coated, while 787089-01 is not.
Question: How many channels does the NI-9470 have?
Answer: The NI-9470 has 8 output channels.
Question: What accessories does the NI-9470 require?
Answer: The NI-9470 requires 1x 787587-01: 16-pin Ultra-Fit Female to Dual 8-pin Pigtail Cable, 1m.
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