DNx-DIO-462 – Guardian™ 12-Channel Form C Relay Output Board

Guardian™ 12-Channel Form C Relay Output Board


The DNx-DIO-462 are 12-channel, electromechanical relay boards. Relays are in a Form C (SPDT) configuration and are rated for continuous operation at 2A at 30 VDC, and 0.75 Amp at 125 VAC. Contacts are rated for 10 million operations. The board provides an ON resistance of less than 200 milliohms and update rates up to 125 Hz.



  • 2 A continuous output current at 30 VDC
  • 750 mA continuous output current at 125 VAC
  • 200 milliohm on resistance
  • Output throughput rate of 125 updates per second

Guardian Series diagnostics

  • Programmable overcurrent protection (50 mA to 2 A)
  • Programmable overcurrent duration limits
  • Monitors each channel’s output voltage and current allowing automatic detection of shorts/open and other system failures

As part of UEI’s Guardian series boards, the DNx-DIO-462 not only controls the relay outputs, it also provides a powerful output monitoring capability. An onboard A/D converter allows you to monitor DC output voltages (relative to the common terminal) and AC or DC output current.


This allows the application to detect short and open circuits as well as other “suspicious behavior”. The monitoring capability is also a powerful diagnostic tool that allows a repair technician to quickly and accurately identify damaged or mis-wired channels.

I/O Chassis
Model No.


RACKtangle ®


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