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July 2025
cFP-RLY-423
cFP-RLY-423, 4-Channel, Relay Output Module for Compact FieldPoint
Actual item may vary if no part number is provided on quote request.
✔ 2 Year Warranty Included
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✔ NIST Calibration Available
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 cFP-RLY-423 Relay Output Module for Compact FieldPoint
The NI cFP-FLY-423 (Part Number: 777318-423) has four single-pole double-throw (SPDT) relay channels, LED relay status indicators, 250 VRMS maximum isolation voltage, 2,300 VRMS transient overvoltage protection, and is hot swappable. This Relay Output Module is created to be mounted on a cFP-BP-x Compact FieldPoint Backplane to bring power to the module. The four relay channels on the cFP-RLY-423 module each have four terminals: one normally open (NO), one normally closed (NC), and two isolated common (IC). The relays are break-before-make. Upon power-up, the relays are in the NC state. When the user turns on the relay channel, it breaks the NC-IC link and results in the NO-IC link. Every relay can be controlled individually, or the user can modify all relays at the same time.
If inductive loads are linked to the relays on the cFP-RLY-423 Relay Output Module, then a massive counter-electromotive force can take place at relay switching time. This is a result of the energy saved in the inductive load. The flyback voltages can greatly harm the relay contacts and reduce the life of the relay. The user can minimize flyback voltages by installing a flyback diode across an inductive DC load or a metal oxide varistor (MOV) across an inductive AC load. Also, the NI cFP-RLY-423 module has internal protection MOVs to deter extremely high voltage from being applied across the contacts. Each channel has two MOVs. One is between NC and IC and the other between NO and IC.
| Model | cFP-RLY-423 |
|---|---|
| Manufacturer | National Instruments |
| Part Number | 777318-423 |
| Type | Relay Output Module for Compact FieldPoint |
| Channels | 4 |
| Relay Type | 1 Form C (SPDT), nonlatching |
| Relay Operate Time | <10 ms typ, 13 ms max |
| Dimensions | 4.3 by 4.3 by 3.6 in. |
| Weight | 5.0 oz. |
| cFP-RLY-423 Manual | User Manual and Maintenance Manual Available for Download |
| Price | Contact a sales representative for a quote. |
Associated part numbers for cFP-RLY-423:
National Instruments cFP-RLY-423 Frequently Asked Questions
Question: What is the relay release time for the cFP-RLY-423 module?
Answer: The relay release time for the cFP-RLY-423 module is <10 ms typical and 13 ms maximum.
Question: What type of contact material do the relays on the NI cFP-RLY-423 have?
Answer: The relays on the NI cFP-RLY-423 have a silver cadmium oxide contact material.
Question: What is the power requirement from the network module for the cFP-RLY-423?
Answer: The power requirement from the network module for the cFP-RLY-423 is 1.0 W.
Question: What is the operating temperature range for the NI cFP-RLY-423?
Answer: The operating temperature range for the NI cFP-RLY-423 is -40 to 60 °C.
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