DNx-DIO-433 – Guardian Series 32-Channel Digital Output Interface

Guardian series 32 channel, 600 mA, current sourcing digital output interface with output voltage and current monitoring.


The DNx-DIO-433 is an ideal digital output interface in a wide variety of data acquisition and control applications. Each output channel is configured as a current source and switches voltages between 3.3 and 36 VDC. Each channel is rated for continuous operation at 600 mA with an output voltage drop of less than 550 mV.



  • 32 digital outputs
  • 600 mA (current source) outputs
  • Wide 3.3 to 36 VDC output range
  • 1 kHz maximum update rate

Guardian Series Diagnostics

  • Programmable overcurrent protection (50 mA to 1 A)
  • Programmable overcurrent duration limits
  • PWM based soft-start/stop reduces inrush current “shock”
  • 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, the DNx-DIO-433 not only controls the digital outputs, it also allows monitoring of each channel’s output voltage and current. This allows the application to detect and flag short and open circuits as well as other “suspicious” behavior.
The Guardian advantage also includes programmable overcurrent protection. The user may select the current and duration of overload (as short as 10 mS) required before the channel is shut down. Each board provides 350 Vrms isolation and update rates to 1 kHz.

I/O Chassis
Model No.


RACKtangle ®


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